Update versions for build dependenciespie-b4s4-dev

This updates Gradle wrapper and Android Gradle Plugin.

'./gradlew assembleDebug' passes in every project in project.txt (after
'./gradlew preflight' if necessary).

LICENSE was modified in Change-Id:
I0b7143eadf2eb17b1ebf0b58e84286f9f87283d9

Test: './gradlew preflight && assembleDebug' in all projects
Bug: 122916118
Change-Id: I51f02b1fa5740090d8e75850df54053bb0440863

239 files changed, 2075 insertions, 16266 deletions

diff --git a/ui/DrawableTinting/LICENSE b/ui/DrawableTinting/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/DrawableTinting/LICENSE
+++ b/ui/DrawableTinting/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
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-licensed under the Apache 2 license.
-
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-
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diff --git a/ui/DrawableTinting/README.md b/ui/DrawableTinting/README.md
index 671b3847..0467596b 100644
--- a/ui/DrawableTinting/README.md
+++ b/ui/DrawableTinting/README.md
@@ -16,8 +16,8 @@ changed from the UI to see the effect of different options.
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Getting Started
@@ -41,7 +41,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/DrawableTinting/gradle/wrapper/gradle-wrapper.jar b/ui/DrawableTinting/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/DrawableTinting/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/DrawableTinting/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/DrawableTinting/gradle/wrapper/gradle-wrapper.properties b/ui/DrawableTinting/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/DrawableTinting/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/DrawableTinting/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/DrawableTinting/gradlew b/ui/DrawableTinting/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/DrawableTinting/gradlew
+++ b/ui/DrawableTinting/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/DrawableTinting/gradlew.bat b/ui/DrawableTinting/gradlew.bat
index 8a0b282a..e95643d6 100644
--- a/ui/DrawableTinting/gradlew.bat
+++ b/ui/DrawableTinting/gradlew.bat
@@ -1,90 +1,84 @@
-@if "%DEBUG%" == "" @echo off
-@rem ##########################################################################
-@rem
-@rem  Gradle startup script for Windows
-@rem
-@rem ##########################################################################
-
-@rem Set local scope for the variables with windows NT shell
-if "%OS%"=="Windows_NT" setlocal
-
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS=
-
-set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
-set APP_BASE_NAME=%~n0
-set APP_HOME=%DIRNAME%
-
-@rem Find java.exe
-if defined JAVA_HOME goto findJavaFromJavaHome
-
-set JAVA_EXE=java.exe
-%JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto init
-
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:findJavaFromJavaHome
-set JAVA_HOME=%JAVA_HOME:"=%
-set JAVA_EXE=%JAVA_HOME%/bin/java.exe
-
-if exist "%JAVA_EXE%" goto init
-
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:init
-@rem Get command-line arguments, handling Windowz variants
-
-if not "%OS%" == "Windows_NT" goto win9xME_args
-if "%@eval[2+2]" == "4" goto 4NT_args
-
-:win9xME_args
-@rem Slurp the command line arguments.
-set CMD_LINE_ARGS=
-set _SKIP=2
-
-:win9xME_args_slurp
-if "x%~1" == "x" goto execute
-
-set CMD_LINE_ARGS=%*
-goto execute
-
-:4NT_args
-@rem Get arguments from the 4NT Shell from JP Software
-set CMD_LINE_ARGS=%$
-
-:execute
-@rem Setup the command line
-
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
-
-@rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
-
-:end
-@rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
-
-:fail
-rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
-rem the _cmd.exe /c_ return code!
-if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
-exit /b 1
-
-:mainEnd
-if "%OS%"=="Windows_NT" endlocal
-
-:omega
+@if "%DEBUG%" == "" @echo off

+@rem ##########################################################################

+@rem

+@rem  Gradle startup script for Windows

+@rem

+@rem ##########################################################################

+

+@rem Set local scope for the variables with windows NT shell

+if "%OS%"=="Windows_NT" setlocal

+

+set DIRNAME=%~dp0

+if "%DIRNAME%" == "" set DIRNAME=.

+set APP_BASE_NAME=%~n0

+set APP_HOME=%DIRNAME%

+

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

+@rem Find java.exe

+if defined JAVA_HOME goto findJavaFromJavaHome

+

+set JAVA_EXE=java.exe

+%JAVA_EXE% -version >NUL 2>&1

+if "%ERRORLEVEL%" == "0" goto init

+

+echo.

+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.

+echo.

+echo Please set the JAVA_HOME variable in your environment to match the

+echo location of your Java installation.

+

+goto fail

+

+:findJavaFromJavaHome

+set JAVA_HOME=%JAVA_HOME:"=%

+set JAVA_EXE=%JAVA_HOME%/bin/java.exe

+

+if exist "%JAVA_EXE%" goto init

+

+echo.

+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%

+echo.

+echo Please set the JAVA_HOME variable in your environment to match the

+echo location of your Java installation.

+

+goto fail

+

+:init

+@rem Get command-line arguments, handling Windows variants

+

+if not "%OS%" == "Windows_NT" goto win9xME_args

+

+:win9xME_args

+@rem Slurp the command line arguments.

+set CMD_LINE_ARGS=

+set _SKIP=2

+

+:win9xME_args_slurp

+if "x%~1" == "x" goto execute

+

+set CMD_LINE_ARGS=%*

+

+:execute

+@rem Setup the command line

+

+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar

+

+@rem Execute Gradle

+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%

+

+:end

+@rem End local scope for the variables with windows NT shell

+if "%ERRORLEVEL%"=="0" goto mainEnd

+

+:fail

+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of

+rem the _cmd.exe /c_ return code!

+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1

+exit /b 1

+

+:mainEnd

+if "%OS%"=="Windows_NT" endlocal

+

+:omega

diff --git a/ui/Interpolator/LICENSE b/ui/Interpolator/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/Interpolator/LICENSE
+++ b/ui/Interpolator/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
-Attribution-NonCommercial-ShareAlike 4.0 International
-
-=======================================================================
-
-Creative Commons Corporation ("Creative Commons") is not a law firm and
-does not provide legal services or legal advice. Distribution of
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-disclaims all liability for damages resulting from their use to the
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-
-Using Creative Commons Public Licenses
-
-Creative Commons public licenses provide a standard set of terms and
-conditions that creators and other rights holders may use to share
-original works of authorship and other material subject to copyright
-and certain other rights specified in the public license below. The
-following considerations are for informational purposes only, are not
-exhaustive, and do not form part of our licenses.
-
-     Considerations for licensors: Our public licenses are
-     intended for use by those authorized to give the public
-     permission to use material in ways otherwise restricted by
-     copyright and certain other rights. Our licenses are
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-
-=======================================================================
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-Notwithstanding, Creative Commons may elect to apply one of its public
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-
diff --git a/ui/Interpolator/README.md b/ui/Interpolator/README.md
index 04b70fd7..3f8351d5 100644
--- a/ui/Interpolator/README.md
+++ b/ui/Interpolator/README.md
@@ -23,15 +23,14 @@ can also define the duration of the animation.
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
 -------------
 
-<img src="screenshots/before.png" height="400" alt="Screenshot"/>
-<img src="screenshots/after.png" height="400" alt="Screenshot"/>
+<img src="screenshots/before.png" height="400" alt="Screenshot"/> <img src="screenshots/after.png" height="400" alt="Screenshot"/> 
 
 Getting Started
 ---------------
@@ -46,7 +45,7 @@ Support
 - Stack Overflow: http://stackoverflow.com/questions/tagged/android
 
 If you've found an error in this sample, please file an issue:
-https://github.com/googlesamples/android-interpolator
+https://github.com/googlesamples/android-Interpolator
 
 Patches are encouraged, and may be submitted by forking this project and
 submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.
@@ -54,7 +53,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/Interpolator/gradle/wrapper/gradle-wrapper.jar b/ui/Interpolator/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/Interpolator/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/Interpolator/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/Interpolator/gradle/wrapper/gradle-wrapper.properties b/ui/Interpolator/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/Interpolator/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/Interpolator/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/Interpolator/gradlew b/ui/Interpolator/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/Interpolator/gradlew
+++ b/ui/Interpolator/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/Interpolator/gradlew.bat b/ui/Interpolator/gradlew.bat
index 8a0b282a..e95643d6 100644
--- a/ui/Interpolator/gradlew.bat
+++ b/ui/Interpolator/gradlew.bat
@@ -1,90 +1,84 @@
-@if "%DEBUG%" == "" @echo off
-@rem ##########################################################################
-@rem
-@rem  Gradle startup script for Windows
-@rem
-@rem ##########################################################################
-
-@rem Set local scope for the variables with windows NT shell
-if "%OS%"=="Windows_NT" setlocal
-
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS=
-
-set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
-set APP_BASE_NAME=%~n0
-set APP_HOME=%DIRNAME%
-
-@rem Find java.exe
-if defined JAVA_HOME goto findJavaFromJavaHome
-
-set JAVA_EXE=java.exe
-%JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto init
-
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:findJavaFromJavaHome
-set JAVA_HOME=%JAVA_HOME:"=%
-set JAVA_EXE=%JAVA_HOME%/bin/java.exe
-
-if exist "%JAVA_EXE%" goto init
-
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:init
-@rem Get command-line arguments, handling Windowz variants
-
-if not "%OS%" == "Windows_NT" goto win9xME_args
-if "%@eval[2+2]" == "4" goto 4NT_args
-
-:win9xME_args
-@rem Slurp the command line arguments.
-set CMD_LINE_ARGS=
-set _SKIP=2
-
-:win9xME_args_slurp
-if "x%~1" == "x" goto execute
-
-set CMD_LINE_ARGS=%*
-goto execute
-
-:4NT_args
-@rem Get arguments from the 4NT Shell from JP Software
-set CMD_LINE_ARGS=%$
-
-:execute
-@rem Setup the command line
-
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
-
-@rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
-
-:end
-@rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
-
-:fail
-rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
-rem the _cmd.exe /c_ return code!
-if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
-exit /b 1
-
-:mainEnd
-if "%OS%"=="Windows_NT" endlocal
-
-:omega
+@if "%DEBUG%" == "" @echo off

+@rem ##########################################################################

+@rem

+@rem  Gradle startup script for Windows

+@rem

+@rem ##########################################################################

+

+@rem Set local scope for the variables with windows NT shell

+if "%OS%"=="Windows_NT" setlocal

+

+set DIRNAME=%~dp0

+if "%DIRNAME%" == "" set DIRNAME=.

+set APP_BASE_NAME=%~n0

+set APP_HOME=%DIRNAME%

+

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

+@rem Find java.exe

+if defined JAVA_HOME goto findJavaFromJavaHome

+

+set JAVA_EXE=java.exe

+%JAVA_EXE% -version >NUL 2>&1

+if "%ERRORLEVEL%" == "0" goto init

+

+echo.

+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.

+echo.

+echo Please set the JAVA_HOME variable in your environment to match the

+echo location of your Java installation.

+

+goto fail

+

+:findJavaFromJavaHome

+set JAVA_HOME=%JAVA_HOME:"=%

+set JAVA_EXE=%JAVA_HOME%/bin/java.exe

+

+if exist "%JAVA_EXE%" goto init

+

+echo.

+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%

+echo.

+echo Please set the JAVA_HOME variable in your environment to match the

+echo location of your Java installation.

+

+goto fail

+

+:init

+@rem Get command-line arguments, handling Windows variants

+

+if not "%OS%" == "Windows_NT" goto win9xME_args

+

+:win9xME_args

+@rem Slurp the command line arguments.

+set CMD_LINE_ARGS=

+set _SKIP=2

+

+:win9xME_args_slurp

+if "x%~1" == "x" goto execute

+

+set CMD_LINE_ARGS=%*

+

+:execute

+@rem Setup the command line

+

+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar

+

+@rem Execute Gradle

+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%

+

+:end

+@rem End local scope for the variables with windows NT shell

+if "%ERRORLEVEL%"=="0" goto mainEnd

+

+:fail

+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of

+rem the _cmd.exe /c_ return code!

+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1

+exit /b 1

+

+:mainEnd

+if "%OS%"=="Windows_NT" endlocal

+

+:omega

diff --git a/ui/accessibility/BasicAccessibility/LICENSE b/ui/accessibility/BasicAccessibility/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/accessibility/BasicAccessibility/LICENSE
+++ b/ui/accessibility/BasicAccessibility/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
-Attribution-NonCommercial-ShareAlike 4.0 International
-
-=======================================================================
-
-Creative Commons Corporation ("Creative Commons") is not a law firm and
-does not provide legal services or legal advice. Distribution of
-Creative Commons public licenses does not create a lawyer-client or
-other relationship. Creative Commons makes its licenses and related
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-warranties regarding its licenses, any material licensed under their
-terms and conditions, or any related information. Creative Commons
-disclaims all liability for damages resulting from their use to the
-fullest extent possible.
-
-Using Creative Commons Public Licenses
-
-Creative Commons public licenses provide a standard set of terms and
-conditions that creators and other rights holders may use to share
-original works of authorship and other material subject to copyright
-and certain other rights specified in the public license below. The
-following considerations are for informational purposes only, are not
-exhaustive, and do not form part of our licenses.
-
-     Considerations for licensors: Our public licenses are
-     intended for use by those authorized to give the public
-     permission to use material in ways otherwise restricted by
-     copyright and certain other rights. Our licenses are
-     irrevocable. Licensors should read and understand the terms
-     and conditions of the license they choose before applying it.
-     Licensors should also secure all rights necessary before
-     applying our licenses so that the public can reuse the
-     material as expected. Licensors should clearly mark any
-     material not subject to the license. This includes other CC-
-     licensed material, or material used under an exception or
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-	wiki.creativecommons.org/Considerations_for_licensors
-
-     Considerations for the public: By using one of our public
-     licenses, a licensor grants the public permission to use the
-     licensed material under specified terms and conditions. If
-     the licensor's permission is not necessary for any reason--for
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-     licenses grant only permissions under copyright and certain
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-	wiki.creativecommons.org/Considerations_for_licensees
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-=======================================================================
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-Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International
-Public License
-
-By exercising the Licensed Rights (defined below), You accept and agree
-to be bound by the terms and conditions of this Creative Commons
-Attribution-NonCommercial-ShareAlike 4.0 International Public License
-("Public License"). To the extent this Public License may be
-interpreted as a contract, You are granted the Licensed Rights in
-consideration of Your acceptance of these terms and conditions, and the
-Licensor grants You such rights in consideration of benefits the
-Licensor receives from making the Licensed Material available under
-these terms and conditions.
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-Section 1 -- Definitions.
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-  a. Adapted Material means material subject to Copyright and Similar
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-     Adapted Material is always produced where the Licensed Material is
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-  b. Adapter's License means the license You apply to Your Copyright
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-  c. BY-NC-SA Compatible License means a license listed at
-     creativecommons.org/compatiblelicenses, approved by Creative
-     Commons as essentially the equivalent of this Public License.
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-     closely related to copyright including, without limitation,
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-     categorized. For purposes of this Public License, the rights
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-  e. Effective Technological Measures means those measures that, in the
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-     equivalent rights anywhere in the world.
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-  n. You means the individual or entity exercising the Licensed Rights
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-
-
-Section 2 -- Scope.
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-          the Licensor hereby grants You a worldwide, royalty-free,
-          non-sublicensable, non-exclusive, irrevocable license to
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-       2. Exceptions and Limitations. For the avoidance of doubt, where
-          Exceptions and Limitations apply to Your use, this Public
-          License does not apply, and You do not need to comply with
-          its terms and conditions.
-
-       3. Term. The term of this Public License is specified in Section
-          6(a).
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-          Licensor authorizes You to exercise the Licensed Rights in
-          all media and formats whether now known or hereafter created,
-          and to make technical modifications necessary to do so. The
-          Licensor waives and/or agrees not to assert any right or
-          authority to forbid You from making technical modifications
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-          technical modifications necessary to circumvent Effective
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-          simply making modifications authorized by this Section 2(a)
-          (4) never produces Adapted Material.
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-               recipient of the Licensed Material automatically
-               receives an offer from the Licensor to exercise the
-               Licensed Rights under the terms and conditions of this
-               Public License.
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-            b. Additional offer from the Licensor -- Adapted Material.
-               Every recipient of Adapted Material from You
-               automatically receives an offer from the Licensor to
-               exercise the Licensed Rights in the Adapted Material
-               under the conditions of the Adapter's License You apply.
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-               Licensed Material if doing so restricts exercise of the
-               Licensed Rights by any recipient of the Licensed
-               Material.
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-       6. No endorsement. Nothing in this Public License constitutes or
-          may be construed as permission to assert or imply that You
-          are, or that Your use of the Licensed Material is, connected
-          with, or sponsored, endorsed, or granted official status by,
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-          provided in Section 3(a)(1)(A)(i).
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-          the extent possible, the Licensor waives and/or agrees not to
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-          license with the same License Elements, this version or
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-          Adapter's License You apply. You may satisfy this condition
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-  b. if You include all or a substantial portion of the database
-     contents in a database in which You have Sui Generis Database
-     Rights, then the database in which You have Sui Generis Database
-     Rights (but not its individual contents) is Adapted Material,
-     including for purposes of Section 3(b); and
-
-  c. You must comply with the conditions in Section 3(a) if You Share
-     all or a substantial portion of the contents of the database.
-
-For the avoidance of doubt, this Section 4 supplements and does not
-replace Your obligations under this Public License where the Licensed
-Rights include other Copyright and Similar Rights.
-
-
-Section 5 -- Disclaimer of Warranties and Limitation of Liability.
-
-  a. UNLESS OTHERWISE SEPARATELY UNDERTAKEN BY THE LICENSOR, TO THE
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diff --git a/ui/accessibility/BasicAccessibility/README.md b/ui/accessibility/BasicAccessibility/README.md
index 5b849a31..a7ac2c3b 100644
--- a/ui/accessibility/BasicAccessibility/README.md
+++ b/ui/accessibility/BasicAccessibility/README.md
@@ -20,8 +20,8 @@ description of the in-focus widget.
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -50,7 +50,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/accessibility/BasicAccessibility/gradle/wrapper/gradle-wrapper.jar b/ui/accessibility/BasicAccessibility/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/accessibility/BasicAccessibility/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/accessibility/BasicAccessibility/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/accessibility/BasicAccessibility/gradle/wrapper/gradle-wrapper.properties b/ui/accessibility/BasicAccessibility/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/accessibility/BasicAccessibility/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/accessibility/BasicAccessibility/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/accessibility/BasicAccessibility/gradlew b/ui/accessibility/BasicAccessibility/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/accessibility/BasicAccessibility/gradlew
+++ b/ui/accessibility/BasicAccessibility/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/accessibility/BasicAccessibility/gradlew.bat b/ui/accessibility/BasicAccessibility/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/accessibility/BasicAccessibility/gradlew.bat
+++ b/ui/accessibility/BasicAccessibility/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/accessibility/BasicAccessibility/template-params.xml b/ui/accessibility/BasicAccessibility/template-params.xml
index 56b36eb2..dde01636 100644
--- a/ui/accessibility/BasicAccessibility/template-params.xml
+++ b/ui/accessibility/BasicAccessibility/template-params.xml
@@ -21,7 +21,7 @@
 
 
     <!-- change minSdk if needed-->
-    <minSdk>11</minSdk>
+    <minSdk>14</minSdk>
 
     <strings>
         <intro>
diff --git a/ui/actionbar/DoneBar/LICENSE b/ui/actionbar/DoneBar/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/actionbar/DoneBar/LICENSE
+++ b/ui/actionbar/DoneBar/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
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-
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diff --git a/ui/actionbar/DoneBar/README.md b/ui/actionbar/DoneBar/README.md
index 3e635c36..5072cc3a 100644
--- a/ui/actionbar/DoneBar/README.md
+++ b/ui/actionbar/DoneBar/README.md
@@ -31,8 +31,8 @@ ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.MATCH_PARENT))` on th
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -61,7 +61,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/actionbar/DoneBar/gradle/wrapper/gradle-wrapper.jar b/ui/actionbar/DoneBar/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/actionbar/DoneBar/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/actionbar/DoneBar/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/actionbar/DoneBar/gradle/wrapper/gradle-wrapper.properties b/ui/actionbar/DoneBar/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/actionbar/DoneBar/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/actionbar/DoneBar/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/actionbar/DoneBar/gradlew b/ui/actionbar/DoneBar/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/actionbar/DoneBar/gradlew
+++ b/ui/actionbar/DoneBar/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/actionbar/DoneBar/gradlew.bat b/ui/actionbar/DoneBar/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/actionbar/DoneBar/gradlew.bat
+++ b/ui/actionbar/DoneBar/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/actionbarcompat/ActionBarCompat-Basic/LICENSE b/ui/actionbarcompat/ActionBarCompat-Basic/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/actionbarcompat/ActionBarCompat-Basic/LICENSE
+++ b/ui/actionbarcompat/ActionBarCompat-Basic/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
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-
-=======================================================================
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diff --git a/ui/actionbarcompat/ActionBarCompat-Basic/README.md b/ui/actionbarcompat/ActionBarCompat-Basic/README.md
index e98edbb9..9bce5692 100644
--- a/ui/actionbarcompat/ActionBarCompat-Basic/README.md
+++ b/ui/actionbarcompat/ActionBarCompat-Basic/README.md
@@ -35,8 +35,8 @@ would otherwise be created during when `[onCreateOptionsMenu()][3]` is called.
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -65,7 +65,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/actionbarcompat/ActionBarCompat-Basic/gradle/wrapper/gradle-wrapper.jar b/ui/actionbarcompat/ActionBarCompat-Basic/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/actionbarcompat/ActionBarCompat-Basic/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/actionbarcompat/ActionBarCompat-Basic/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/actionbarcompat/ActionBarCompat-Basic/gradle/wrapper/gradle-wrapper.properties b/ui/actionbarcompat/ActionBarCompat-Basic/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/actionbarcompat/ActionBarCompat-Basic/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/actionbarcompat/ActionBarCompat-Basic/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/actionbarcompat/ActionBarCompat-Basic/gradlew b/ui/actionbarcompat/ActionBarCompat-Basic/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/actionbarcompat/ActionBarCompat-Basic/gradlew
+++ b/ui/actionbarcompat/ActionBarCompat-Basic/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/actionbarcompat/ActionBarCompat-Basic/gradlew.bat b/ui/actionbarcompat/ActionBarCompat-Basic/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/actionbarcompat/ActionBarCompat-Basic/gradlew.bat
+++ b/ui/actionbarcompat/ActionBarCompat-Basic/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/actionbarcompat/ActionBarCompat-Basic/template-params.xml b/ui/actionbarcompat/ActionBarCompat-Basic/template-params.xml
index 80f65695..b6a08325 100644
--- a/ui/actionbarcompat/ActionBarCompat-Basic/template-params.xml
+++ b/ui/actionbarcompat/ActionBarCompat-Basic/template-params.xml
@@ -20,7 +20,7 @@
     <package>com.example.android.actionbarcompat.basic</package>
 
     <!-- change minSdk if needed-->
-    <minSdk>7</minSdk>
+    <minSdk>14</minSdk>
 
     <strings>
         <intro>
diff --git a/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/LICENSE b/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/LICENSE
+++ b/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
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diff --git a/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/README.md b/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/README.md
index c5357bf4..f69c5532 100644
--- a/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/README.md
+++ b/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/README.md
@@ -17,8 +17,8 @@ The sample uses [ListFragment][2] from the v4 support library to display the lis
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -47,7 +47,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/gradle/wrapper/gradle-wrapper.jar b/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/gradle/wrapper/gradle-wrapper.properties b/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/gradlew b/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/gradlew
+++ b/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/gradlew.bat b/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/gradlew.bat
+++ b/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/template-params.xml b/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/template-params.xml
index 930a2936..6a74d3c9 100644
--- a/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/template-params.xml
+++ b/ui/actionbarcompat/ActionBarCompat-ListPopupMenu/template-params.xml
@@ -20,7 +20,7 @@
     <package>com.example.android.actionbarcompat.listpopupmenu</package>
 
     <!-- change minSdk if needed-->
-    <minSdk>7</minSdk>
+    <minSdk>14</minSdk>
 
     <strings>
         <intro>
diff --git a/ui/actionbarcompat/ActionBarCompat-Styled/LICENSE b/ui/actionbarcompat/ActionBarCompat-Styled/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/actionbarcompat/ActionBarCompat-Styled/LICENSE
+++ b/ui/actionbarcompat/ActionBarCompat-Styled/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
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diff --git a/ui/actionbarcompat/ActionBarCompat-Styled/README.md b/ui/actionbarcompat/ActionBarCompat-Styled/README.md
index 3aa31808..3dd69567 100644
--- a/ui/actionbarcompat/ActionBarCompat-Styled/README.md
+++ b/ui/actionbarcompat/ActionBarCompat-Styled/README.md
@@ -23,8 +23,8 @@ Assets have been generated using the ['Android Action Bar Style Generator'][2].
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -53,7 +53,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/actionbarcompat/ActionBarCompat-Styled/gradle/wrapper/gradle-wrapper.jar b/ui/actionbarcompat/ActionBarCompat-Styled/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/actionbarcompat/ActionBarCompat-Styled/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/actionbarcompat/ActionBarCompat-Styled/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/actionbarcompat/ActionBarCompat-Styled/gradle/wrapper/gradle-wrapper.properties b/ui/actionbarcompat/ActionBarCompat-Styled/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/actionbarcompat/ActionBarCompat-Styled/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/actionbarcompat/ActionBarCompat-Styled/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/actionbarcompat/ActionBarCompat-Styled/gradlew b/ui/actionbarcompat/ActionBarCompat-Styled/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/actionbarcompat/ActionBarCompat-Styled/gradlew
+++ b/ui/actionbarcompat/ActionBarCompat-Styled/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/actionbarcompat/ActionBarCompat-Styled/gradlew.bat b/ui/actionbarcompat/ActionBarCompat-Styled/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/actionbarcompat/ActionBarCompat-Styled/gradlew.bat
+++ b/ui/actionbarcompat/ActionBarCompat-Styled/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/actionbarcompat/ActionBarCompat-Styled/template-params.xml b/ui/actionbarcompat/ActionBarCompat-Styled/template-params.xml
index f6e72226..28153253 100644
--- a/ui/actionbarcompat/ActionBarCompat-Styled/template-params.xml
+++ b/ui/actionbarcompat/ActionBarCompat-Styled/template-params.xml
@@ -20,7 +20,7 @@
     <package>com.example.android.actionbarcompat.styled</package>
 
     <!-- change minSdk if needed-->
-    <minSdk>7</minSdk>
+    <minSdk>14</minSdk>
 
 
     <strings>
diff --git a/ui/activityscenetransition/ActivitySceneTransitionBasic/LICENSE b/ui/activityscenetransition/ActivitySceneTransitionBasic/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/activityscenetransition/ActivitySceneTransitionBasic/LICENSE
+++ b/ui/activityscenetransition/ActivitySceneTransitionBasic/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
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-----------------
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-  n. You means the individual or entity exercising the Licensed Rights
-     under this Public License. Your has a corresponding meaning.
-
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-Section 2 -- Scope.
-
-  a. License grant.
-
-       1. Subject to the terms and conditions of this Public License,
-          the Licensor hereby grants You a worldwide, royalty-free,
-          non-sublicensable, non-exclusive, irrevocable license to
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-       2. Exceptions and Limitations. For the avoidance of doubt, where
-          Exceptions and Limitations apply to Your use, this Public
-          License does not apply, and You do not need to comply with
-          its terms and conditions.
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-       3. Term. The term of this Public License is specified in Section
-          6(a).
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-          Licensor authorizes You to exercise the Licensed Rights in
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-          technical modifications necessary to circumvent Effective
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-          simply making modifications authorized by this Section 2(a)
-          (4) never produces Adapted Material.
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-       5. Downstream recipients.
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-               under the conditions of the Adapter's License You apply.
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-            c. No downstream restrictions. You may not offer or impose
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-               Licensed Material if doing so restricts exercise of the
-               Licensed Rights by any recipient of the Licensed
-               Material.
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-       6. No endorsement. Nothing in this Public License constitutes or
-          may be construed as permission to assert or imply that You
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-          with, or sponsored, endorsed, or granted official status by,
-          the Licensor or others designated to receive attribution as
-          provided in Section 3(a)(1)(A)(i).
-
-  b. Other rights.
-
-       1. Moral rights, such as the right of integrity, are not
-          licensed under this Public License, nor are publicity,
-          privacy, and/or other similar personality rights; however, to
-          the extent possible, the Licensor waives and/or agrees not to
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-          extent necessary to allow You to exercise the Licensed
-          Rights, but not otherwise.
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-       2. Patent and trademark rights are not licensed under this
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-       3. To the extent possible, the Licensor waives any right to
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-          Rights, whether directly or through a collecting society
-          under any voluntary or waivable statutory or compulsory
-          licensing scheme. In all other cases the Licensor expressly
-          reserves any right to collect such royalties, including when
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-          purposes.
-
-
-Section 3 -- License Conditions.
-
-Your exercise of the Licensed Rights is expressly made subject to the
-following conditions.
-
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-       1. If You Share the Licensed Material (including in modified
-          form), You must:
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-            a. retain the following if it is supplied by the Licensor
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-                    Material and any others designated to receive
-                    attribution, in any reasonable manner requested by
-                    the Licensor (including by pseudonym if
-                    designated);
-
-                ii. a copyright notice;
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-               iii. a notice that refers to this Public License;
-
-                iv. a notice that refers to the disclaimer of
-                    warranties;
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-                 v. a URI or hyperlink to the Licensed Material to the
-                    extent reasonably practicable;
-
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-               retain an indication of any previous modifications; and
-
-            c. indicate the Licensed Material is licensed under this
-               Public License, and include the text of, or the URI or
-               hyperlink to, this Public License.
-
-       2. You may satisfy the conditions in Section 3(a)(1) in any
-          reasonable manner based on the medium, means, and context in
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-          information.
-       3. If requested by the Licensor, You must remove any of the
-          information required by Section 3(a)(1)(A) to the extent
-          reasonably practicable.
-
-  b. ShareAlike.
-
-     In addition to the conditions in Section 3(a), if You Share
-     Adapted Material You produce, the following conditions also apply.
-
-       1. The Adapter's License You apply must be a Creative Commons
-          license with the same License Elements, this version or
-          later, or a BY-NC-SA Compatible License.
-
-       2. You must include the text of, or the URI or hyperlink to, the
-          Adapter's License You apply. You may satisfy this condition
-          in any reasonable manner based on the medium, means, and
-          context in which You Share Adapted Material.
-
-       3. You may not offer or impose any additional or different terms
-          or conditions on, or apply any Effective Technological
-          Measures to, Adapted Material that restrict exercise of the
-          rights granted under the Adapter's License You apply.
-
-
-Section 4 -- Sui Generis Database Rights.
-
-Where the Licensed Rights include Sui Generis Database Rights that
-apply to Your use of the Licensed Material:
-
-  a. for the avoidance of doubt, Section 2(a)(1) grants You the right
-     to extract, reuse, reproduce, and Share all or a substantial
-     portion of the contents of the database for NonCommercial purposes
-     only;
-
-  b. if You include all or a substantial portion of the database
-     contents in a database in which You have Sui Generis Database
-     Rights, then the database in which You have Sui Generis Database
-     Rights (but not its individual contents) is Adapted Material,
-     including for purposes of Section 3(b); and
-
-  c. You must comply with the conditions in Section 3(a) if You Share
-     all or a substantial portion of the contents of the database.
-
-For the avoidance of doubt, this Section 4 supplements and does not
-replace Your obligations under this Public License where the Licensed
-Rights include other Copyright and Similar Rights.
-
-
-Section 5 -- Disclaimer of Warranties and Limitation of Liability.
-
-  a. UNLESS OTHERWISE SEPARATELY UNDERTAKEN BY THE LICENSOR, TO THE
-     EXTENT POSSIBLE, THE LICENSOR OFFERS THE LICENSED MATERIAL AS-IS
-     AND AS-AVAILABLE, AND MAKES NO REPRESENTATIONS OR WARRANTIES OF
-     ANY KIND CONCERNING THE LICENSED MATERIAL, WHETHER EXPRESS,
-     IMPLIED, STATUTORY, OR OTHER. THIS INCLUDES, WITHOUT LIMITATION,
-     WARRANTIES OF TITLE, MERCHANTABILITY, FITNESS FOR A PARTICULAR
-     PURPOSE, NON-INFRINGEMENT, ABSENCE OF LATENT OR OTHER DEFECTS,
-     ACCURACY, OR THE PRESENCE OR ABSENCE OF ERRORS, WHETHER OR NOT
-     KNOWN OR DISCOVERABLE. WHERE DISCLAIMERS OF WARRANTIES ARE NOT
-     ALLOWED IN FULL OR IN PART, THIS DISCLAIMER MAY NOT APPLY TO YOU.
-
-  b. TO THE EXTENT POSSIBLE, IN NO EVENT WILL THE LICENSOR BE LIABLE
-     TO YOU ON ANY LEGAL THEORY (INCLUDING, WITHOUT LIMITATION,
-     NEGLIGENCE) OR OTHERWISE FOR ANY DIRECT, SPECIAL, INDIRECT,
-     INCIDENTAL, CONSEQUENTIAL, PUNITIVE, EXEMPLARY, OR OTHER LOSSES,
-     COSTS, EXPENSES, OR DAMAGES ARISING OUT OF THIS PUBLIC LICENSE OR
-     USE OF THE LICENSED MATERIAL, EVEN IF THE LICENSOR HAS BEEN
-     ADVISED OF THE POSSIBILITY OF SUCH LOSSES, COSTS, EXPENSES, OR
-     DAMAGES. WHERE A LIMITATION OF LIABILITY IS NOT ALLOWED IN FULL OR
-     IN PART, THIS LIMITATION MAY NOT APPLY TO YOU.
-
-  c. The disclaimer of warranties and limitation of liability provided
-     above shall be interpreted in a manner that, to the extent
-     possible, most closely approximates an absolute disclaimer and
-     waiver of all liability.
-
-
-Section 6 -- Term and Termination.
-
-  a. This Public License applies for the term of the Copyright and
-     Similar Rights licensed here. However, if You fail to comply with
-     this Public License, then Your rights under this Public License
-     terminate automatically.
-
-  b. Where Your right to use the Licensed Material has terminated under
-     Section 6(a), it reinstates:
-
-       1. automatically as of the date the violation is cured, provided
-          it is cured within 30 days of Your discovery of the
-          violation; or
-
-       2. upon express reinstatement by the Licensor.
-
-     For the avoidance of doubt, this Section 6(b) does not affect any
-     right the Licensor may have to seek remedies for Your violations
-     of this Public License.
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-  c. For the avoidance of doubt, the Licensor may also offer the
-     Licensed Material under separate terms or conditions or stop
-     distributing the Licensed Material at any time; however, doing so
-     will not terminate this Public License.
-
-  d. Sections 1, 5, 6, 7, and 8 survive termination of this Public
-     License.
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-Section 7 -- Other Terms and Conditions.
-
-  a. The Licensor shall not be bound by any additional or different
-     terms or conditions communicated by You unless expressly agreed.
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-  b. Any arrangements, understandings, or agreements regarding the
-     Licensed Material not stated herein are separate from and
-     independent of the terms and conditions of this Public License.
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-Section 8 -- Interpretation.
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-  a. For the avoidance of doubt, this Public License does not, and
-     shall not be interpreted to, reduce, limit, restrict, or impose
-     conditions on any use of the Licensed Material that could lawfully
-     be made without permission under this Public License.
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-  b. To the extent possible, if any provision of this Public License is
-     deemed unenforceable, it shall be automatically reformed to the
-     minimum extent necessary to make it enforceable. If the provision
-     cannot be reformed, it shall be severed from this Public License
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-     conditions.
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-  c. No term or condition of this Public License will be waived and no
-     failure to comply consented to unless expressly agreed to by the
-     Licensor.
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-  d. Nothing in this Public License constitutes or may be interpreted
-     as a limitation upon, or waiver of, any privileges and immunities
-     that apply to the Licensor or You, including from the legal
-     processes of any jurisdiction or authority.
-
-=======================================================================
-
-Creative Commons is not a party to its public licenses.
-Notwithstanding, Creative Commons may elect to apply one of its public
-licenses to material it publishes and in those instances will be
-considered the "Licensor." Except for the limited purpose of indicating
-that material is shared under a Creative Commons public license or as
-otherwise permitted by the Creative Commons policies published at
-creativecommons.org/policies, Creative Commons does not authorize the
-use of the trademark "Creative Commons" or any other trademark or logo
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-without limitation, in connection with any unauthorized modifications
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-understandings, or agreements concerning use of licensed material. For
-the avoidance of doubt, this paragraph does not form part of the public
-licenses.
-
-Creative Commons may be contacted at creativecommons.org.
-
diff --git a/ui/activityscenetransition/ActivitySceneTransitionBasic/README.md b/ui/activityscenetransition/ActivitySceneTransitionBasic/README.md
index 90dba486..4b6455a4 100644
--- a/ui/activityscenetransition/ActivitySceneTransitionBasic/README.md
+++ b/ui/activityscenetransition/ActivitySceneTransitionBasic/README.md
@@ -19,8 +19,8 @@ See [Defining Custom Animations][1] for all the details on how to do this.
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -49,7 +49,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/activityscenetransition/ActivitySceneTransitionBasic/gradle/wrapper/gradle-wrapper.jar b/ui/activityscenetransition/ActivitySceneTransitionBasic/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/activityscenetransition/ActivitySceneTransitionBasic/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/activityscenetransition/ActivitySceneTransitionBasic/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/activityscenetransition/ActivitySceneTransitionBasic/gradle/wrapper/gradle-wrapper.properties b/ui/activityscenetransition/ActivitySceneTransitionBasic/gradle/wrapper/gradle-wrapper.properties
index cf959fc2..ae45383b 100644
--- a/ui/activityscenetransition/ActivitySceneTransitionBasic/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/activityscenetransition/ActivitySceneTransitionBasic/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Fri Jun 13 16:21:29 BST 2014
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/activityscenetransition/ActivitySceneTransitionBasic/gradlew b/ui/activityscenetransition/ActivitySceneTransitionBasic/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/activityscenetransition/ActivitySceneTransitionBasic/gradlew
+++ b/ui/activityscenetransition/ActivitySceneTransitionBasic/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/activityscenetransition/ActivitySceneTransitionBasic/gradlew.bat b/ui/activityscenetransition/ActivitySceneTransitionBasic/gradlew.bat
index 8a0b282a..e95643d6 100644
--- a/ui/activityscenetransition/ActivitySceneTransitionBasic/gradlew.bat
+++ b/ui/activityscenetransition/ActivitySceneTransitionBasic/gradlew.bat
@@ -1,90 +1,84 @@
-@if "%DEBUG%" == "" @echo off
-@rem ##########################################################################
-@rem
-@rem  Gradle startup script for Windows
-@rem
-@rem ##########################################################################
-
-@rem Set local scope for the variables with windows NT shell
-if "%OS%"=="Windows_NT" setlocal
-
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS=
-
-set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
-set APP_BASE_NAME=%~n0
-set APP_HOME=%DIRNAME%
-
-@rem Find java.exe
-if defined JAVA_HOME goto findJavaFromJavaHome
-
-set JAVA_EXE=java.exe
-%JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto init
-
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:findJavaFromJavaHome
-set JAVA_HOME=%JAVA_HOME:"=%
-set JAVA_EXE=%JAVA_HOME%/bin/java.exe
-
-if exist "%JAVA_EXE%" goto init
-
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:init
-@rem Get command-line arguments, handling Windowz variants
-
-if not "%OS%" == "Windows_NT" goto win9xME_args
-if "%@eval[2+2]" == "4" goto 4NT_args
-
-:win9xME_args
-@rem Slurp the command line arguments.
-set CMD_LINE_ARGS=
-set _SKIP=2
-
-:win9xME_args_slurp
-if "x%~1" == "x" goto execute
-
-set CMD_LINE_ARGS=%*
-goto execute
-
-:4NT_args
-@rem Get arguments from the 4NT Shell from JP Software
-set CMD_LINE_ARGS=%$
-
-:execute
-@rem Setup the command line
-
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
-
-@rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
-
-:end
-@rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
-
-:fail
-rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
-rem the _cmd.exe /c_ return code!
-if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
-exit /b 1
-
-:mainEnd
-if "%OS%"=="Windows_NT" endlocal
-
-:omega
+@if "%DEBUG%" == "" @echo off

+@rem ##########################################################################

+@rem

+@rem  Gradle startup script for Windows

+@rem

+@rem ##########################################################################

+

+@rem Set local scope for the variables with windows NT shell

+if "%OS%"=="Windows_NT" setlocal

+

+set DIRNAME=%~dp0

+if "%DIRNAME%" == "" set DIRNAME=.

+set APP_BASE_NAME=%~n0

+set APP_HOME=%DIRNAME%

+

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

+@rem Find java.exe

+if defined JAVA_HOME goto findJavaFromJavaHome

+

+set JAVA_EXE=java.exe

+%JAVA_EXE% -version >NUL 2>&1

+if "%ERRORLEVEL%" == "0" goto init

+

+echo.

+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.

+echo.

+echo Please set the JAVA_HOME variable in your environment to match the

+echo location of your Java installation.

+

+goto fail

+

+:findJavaFromJavaHome

+set JAVA_HOME=%JAVA_HOME:"=%

+set JAVA_EXE=%JAVA_HOME%/bin/java.exe

+

+if exist "%JAVA_EXE%" goto init

+

+echo.

+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%

+echo.

+echo Please set the JAVA_HOME variable in your environment to match the

+echo location of your Java installation.

+

+goto fail

+

+:init

+@rem Get command-line arguments, handling Windows variants

+

+if not "%OS%" == "Windows_NT" goto win9xME_args

+

+:win9xME_args

+@rem Slurp the command line arguments.

+set CMD_LINE_ARGS=

+set _SKIP=2

+

+:win9xME_args_slurp

+if "x%~1" == "x" goto execute

+

+set CMD_LINE_ARGS=%*

+

+:execute

+@rem Setup the command line

+

+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar

+

+@rem Execute Gradle

+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%

+

+:end

+@rem End local scope for the variables with windows NT shell

+if "%ERRORLEVEL%"=="0" goto mainEnd

+

+:fail

+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of

+rem the _cmd.exe /c_ return code!

+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1

+exit /b 1

+

+:mainEnd

+if "%OS%"=="Windows_NT" endlocal

+

+:omega

diff --git a/ui/activitytasks/DocumentCentricApps/LICENSE b/ui/activitytasks/DocumentCentricApps/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/activitytasks/DocumentCentricApps/LICENSE
+++ b/ui/activitytasks/DocumentCentricApps/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
-Attribution-NonCommercial-ShareAlike 4.0 International
-
-=======================================================================
-
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diff --git a/ui/activitytasks/DocumentCentricApps/gradle/wrapper/gradle-wrapper.jar b/ui/activitytasks/DocumentCentricApps/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/activitytasks/DocumentCentricApps/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/activitytasks/DocumentCentricApps/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/activitytasks/DocumentCentricApps/gradle/wrapper/gradle-wrapper.properties b/ui/activitytasks/DocumentCentricApps/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/activitytasks/DocumentCentricApps/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/activitytasks/DocumentCentricApps/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/activitytasks/DocumentCentricApps/gradlew b/ui/activitytasks/DocumentCentricApps/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/activitytasks/DocumentCentricApps/gradlew
+++ b/ui/activitytasks/DocumentCentricApps/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/activitytasks/DocumentCentricApps/gradlew.bat b/ui/activitytasks/DocumentCentricApps/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/activitytasks/DocumentCentricApps/gradlew.bat
+++ b/ui/activitytasks/DocumentCentricApps/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/activitytasks/DocumentCentricRelinquishIdentity/gradle/wrapper/gradle-wrapper.jar b/ui/activitytasks/DocumentCentricRelinquishIdentity/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/activitytasks/DocumentCentricRelinquishIdentity/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/activitytasks/DocumentCentricRelinquishIdentity/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/activitytasks/DocumentCentricRelinquishIdentity/gradle/wrapper/gradle-wrapper.properties b/ui/activitytasks/DocumentCentricRelinquishIdentity/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/activitytasks/DocumentCentricRelinquishIdentity/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/activitytasks/DocumentCentricRelinquishIdentity/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/activitytasks/DocumentCentricRelinquishIdentity/gradlew b/ui/activitytasks/DocumentCentricRelinquishIdentity/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/activitytasks/DocumentCentricRelinquishIdentity/gradlew
+++ b/ui/activitytasks/DocumentCentricRelinquishIdentity/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/activitytasks/DocumentCentricRelinquishIdentity/gradlew.bat b/ui/activitytasks/DocumentCentricRelinquishIdentity/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/activitytasks/DocumentCentricRelinquishIdentity/gradlew.bat
+++ b/ui/activitytasks/DocumentCentricRelinquishIdentity/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/fonts/DownloadableFonts/build.gradle b/ui/fonts/DownloadableFonts/build.gradle
index 2d689c43..890e0f11 100644
--- a/ui/fonts/DownloadableFonts/build.gradle
+++ b/ui/fonts/DownloadableFonts/build.gradle
@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0'
+        classpath 'com.android.tools.build:gradle:3.2.1'
     }
 }
 
diff --git a/ui/fonts/DownloadableFonts/gradle/wrapper/gradle-wrapper.properties b/ui/fonts/DownloadableFonts/gradle/wrapper/gradle-wrapper.properties
index 716f641a..f9415508 100644
--- a/ui/fonts/DownloadableFonts/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/fonts/DownloadableFonts/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Aug 09 11:54:51 JST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
diff --git a/ui/fonts/DownloadableFonts/kotlinApp/app/build.gradle b/ui/fonts/DownloadableFonts/kotlinApp/app/build.gradle
index 46db5c93..5333a79e 100644
--- a/ui/fonts/DownloadableFonts/kotlinApp/app/build.gradle
+++ b/ui/fonts/DownloadableFonts/kotlinApp/app/build.gradle
@@ -33,6 +33,6 @@ repositories {
     mavenCentral()
 }
 dependencies {
-    compile "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
+    compile "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
 }
 
diff --git a/ui/fonts/DownloadableFonts/kotlinApp/build.gradle b/ui/fonts/DownloadableFonts/kotlinApp/build.gradle
index 94c43372..f6b2bd47 100644
--- a/ui/fonts/DownloadableFonts/kotlinApp/build.gradle
+++ b/ui/fonts/DownloadableFonts/kotlinApp/build.gradle
@@ -1,12 +1,12 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
-    ext.kotlin_version = '1.1.3-2'
+    ext.kotlin_version = '1.3.11'
     repositories {
         google()
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0'
+        classpath 'com.android.tools.build:gradle:3.2.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
diff --git a/ui/fonts/DownloadableFonts/kotlinApp/gradle/wrapper/gradle-wrapper.properties b/ui/fonts/DownloadableFonts/kotlinApp/gradle/wrapper/gradle-wrapper.properties
index 9eaab7c2..f9415508 100644
--- a/ui/fonts/DownloadableFonts/kotlinApp/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/fonts/DownloadableFonts/kotlinApp/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed May 10 17:45:17 JST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions-snapshots/gradle-4.0-20170406000015+0000-all.zip
diff --git a/ui/graphics/DisplayingBitmaps/LICENSE b/ui/graphics/DisplayingBitmaps/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/graphics/DisplayingBitmaps/LICENSE
+++ b/ui/graphics/DisplayingBitmaps/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
-Attribution-NonCommercial-ShareAlike 4.0 International
-
-=======================================================================
-
-Creative Commons Corporation ("Creative Commons") is not a law firm and
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-
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-  c. You must comply with the conditions in Section 3(a) if You Share
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-
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diff --git a/ui/graphics/DisplayingBitmaps/README.md b/ui/graphics/DisplayingBitmaps/README.md
index f9c0d747..5fbe8dcf 100644
--- a/ui/graphics/DisplayingBitmaps/README.md
+++ b/ui/graphics/DisplayingBitmaps/README.md
@@ -20,8 +20,8 @@ in UI elements such as ViewPager and ListView/GridView.
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -50,7 +50,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/graphics/DisplayingBitmaps/gradle/wrapper/gradle-wrapper.jar b/ui/graphics/DisplayingBitmaps/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/graphics/DisplayingBitmaps/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/graphics/DisplayingBitmaps/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/graphics/DisplayingBitmaps/gradle/wrapper/gradle-wrapper.properties b/ui/graphics/DisplayingBitmaps/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/graphics/DisplayingBitmaps/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/graphics/DisplayingBitmaps/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/graphics/DisplayingBitmaps/gradlew b/ui/graphics/DisplayingBitmaps/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/graphics/DisplayingBitmaps/gradlew
+++ b/ui/graphics/DisplayingBitmaps/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/graphics/DisplayingBitmaps/gradlew.bat b/ui/graphics/DisplayingBitmaps/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/graphics/DisplayingBitmaps/gradlew.bat
+++ b/ui/graphics/DisplayingBitmaps/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/graphics/DisplayingBitmaps/template-params.xml b/ui/graphics/DisplayingBitmaps/template-params.xml
index 643e049c..0fbde9ac 100644
--- a/ui/graphics/DisplayingBitmaps/template-params.xml
+++ b/ui/graphics/DisplayingBitmaps/template-params.xml
@@ -20,7 +20,7 @@
     <package>com.example.android.displayingbitmaps</package>
 
     <!-- change minSdk if needed-->
-    <minSdk>9</minSdk>
+    <minSdk>14</minSdk>
     <targetSdkVersion>22</targetSdkVersion>
 
     <strings>
diff --git a/ui/graphics/PdfRendererBasic/LICENSE b/ui/graphics/PdfRendererBasic/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/graphics/PdfRendererBasic/LICENSE
+++ b/ui/graphics/PdfRendererBasic/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
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-
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-  c. The disclaimer of warranties and limitation of liability provided
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-
-Section 6 -- Term and Termination.
-
-  a. This Public License applies for the term of the Copyright and
-     Similar Rights licensed here. However, if You fail to comply with
-     this Public License, then Your rights under this Public License
-     terminate automatically.
-
-  b. Where Your right to use the Licensed Material has terminated under
-     Section 6(a), it reinstates:
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-       1. automatically as of the date the violation is cured, provided
-          it is cured within 30 days of Your discovery of the
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-       2. upon express reinstatement by the Licensor.
-
-     For the avoidance of doubt, this Section 6(b) does not affect any
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diff --git a/ui/graphics/PdfRendererBasic/gradle/wrapper/gradle-wrapper.jar b/ui/graphics/PdfRendererBasic/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/graphics/PdfRendererBasic/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/graphics/PdfRendererBasic/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/graphics/PdfRendererBasic/gradle/wrapper/gradle-wrapper.properties b/ui/graphics/PdfRendererBasic/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/graphics/PdfRendererBasic/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/graphics/PdfRendererBasic/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/graphics/PdfRendererBasic/gradlew b/ui/graphics/PdfRendererBasic/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/graphics/PdfRendererBasic/gradlew
+++ b/ui/graphics/PdfRendererBasic/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/graphics/PdfRendererBasic/gradlew.bat b/ui/graphics/PdfRendererBasic/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/graphics/PdfRendererBasic/gradlew.bat
+++ b/ui/graphics/PdfRendererBasic/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/graphics/PdfRendererBasic/kotlinApp/Application/build.gradle b/ui/graphics/PdfRendererBasic/kotlinApp/Application/build.gradle
index 19b947fc..44d34d58 100644
--- a/ui/graphics/PdfRendererBasic/kotlinApp/Application/build.gradle
+++ b/ui/graphics/PdfRendererBasic/kotlinApp/Application/build.gradle
@@ -23,7 +23,7 @@ android {
 dependencies {
     implementation "com.android.support:appcompat-v7:$rootProject.ext.supportLibVersion"
     implementation "com.android.support:support-v4:$rootProject.ext.supportLibVersion"
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$rootProject.ext.kotlinVersion"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib:$rootProject.ext.kotlinVersion"
 
     // Testing dependencies
     androidTestImplementation "com.android.support.test.espresso:espresso-contrib:$rootProject.ext.espressoVersion"
diff --git a/ui/graphics/PdfRendererBasic/kotlinApp/build.gradle b/ui/graphics/PdfRendererBasic/kotlinApp/build.gradle
index c1ee1e56..25df13a8 100644
--- a/ui/graphics/PdfRendererBasic/kotlinApp/build.gradle
+++ b/ui/graphics/PdfRendererBasic/kotlinApp/build.gradle
@@ -6,7 +6,7 @@ buildscript {
 
         espressoVersion = '3.0.1'
         junitVersion = '4.12'
-        kotlinVersion = '1.2.0'
+        kotlinVersion = '1.3.11'
         supportLibVersion = '27.0.2'
         supportTestVersion = '1.0.1'
     }
@@ -15,7 +15,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:3.2.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
     }
 }
diff --git a/ui/graphics/PdfRendererBasic/kotlinApp/gradle/wrapper/gradle-wrapper.properties b/ui/graphics/PdfRendererBasic/kotlinApp/gradle/wrapper/gradle-wrapper.properties
index 4867119d..f9415508 100644
--- a/ui/graphics/PdfRendererBasic/kotlinApp/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/graphics/PdfRendererBasic/kotlinApp/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Mon Dec 11 10:28:08 PST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
\ No newline at end of file
diff --git a/ui/holo/BorderlessButtons/LICENSE b/ui/holo/BorderlessButtons/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/holo/BorderlessButtons/LICENSE
+++ b/ui/holo/BorderlessButtons/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
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-
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diff --git a/ui/holo/BorderlessButtons/README.md b/ui/holo/BorderlessButtons/README.md
index 679484a2..0e4625d6 100644
--- a/ui/holo/BorderlessButtons/README.md
+++ b/ui/holo/BorderlessButtons/README.md
@@ -24,8 +24,8 @@ Styles are directly applied to widgets in their XML layout definitions.
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -54,7 +54,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/holo/BorderlessButtons/gradle/wrapper/gradle-wrapper.jar b/ui/holo/BorderlessButtons/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/holo/BorderlessButtons/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/holo/BorderlessButtons/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/holo/BorderlessButtons/gradle/wrapper/gradle-wrapper.properties b/ui/holo/BorderlessButtons/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/holo/BorderlessButtons/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/holo/BorderlessButtons/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/holo/BorderlessButtons/gradlew b/ui/holo/BorderlessButtons/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/holo/BorderlessButtons/gradlew
+++ b/ui/holo/BorderlessButtons/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/holo/BorderlessButtons/gradlew.bat b/ui/holo/BorderlessButtons/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/holo/BorderlessButtons/gradlew.bat
+++ b/ui/holo/BorderlessButtons/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/lists/CustomChoiceList/LICENSE b/ui/lists/CustomChoiceList/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/lists/CustomChoiceList/LICENSE
+++ b/ui/lists/CustomChoiceList/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
-Attribution-NonCommercial-ShareAlike 4.0 International
-
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-
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diff --git a/ui/lists/CustomChoiceList/README.md b/ui/lists/CustomChoiceList/README.md
index df7b1907..f5605110 100644
--- a/ui/lists/CustomChoiceList/README.md
+++ b/ui/lists/CustomChoiceList/README.md
@@ -41,8 +41,8 @@ guidelines. When doing so, you should set the `android:scrollbarStyle` attribute
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -71,7 +71,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/lists/CustomChoiceList/gradle/wrapper/gradle-wrapper.jar b/ui/lists/CustomChoiceList/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/lists/CustomChoiceList/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/lists/CustomChoiceList/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/lists/CustomChoiceList/gradle/wrapper/gradle-wrapper.properties b/ui/lists/CustomChoiceList/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/lists/CustomChoiceList/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/lists/CustomChoiceList/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/lists/CustomChoiceList/gradlew b/ui/lists/CustomChoiceList/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/lists/CustomChoiceList/gradlew
+++ b/ui/lists/CustomChoiceList/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/lists/CustomChoiceList/gradlew.bat b/ui/lists/CustomChoiceList/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/lists/CustomChoiceList/gradlew.bat
+++ b/ui/lists/CustomChoiceList/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/lists/CustomChoiceList/template-params.xml b/ui/lists/CustomChoiceList/template-params.xml
index d42ba2b8..c7f4fd28 100644
--- a/ui/lists/CustomChoiceList/template-params.xml
+++ b/ui/lists/CustomChoiceList/template-params.xml
@@ -20,7 +20,7 @@
     <package>com.example.android.customchoicelist</package>
 
     <!-- change minSdk if needed-->
-    <minSdk>7</minSdk>
+    <minSdk>14</minSdk>
 
     <strings>
         <intro>
diff --git a/ui/transition/BasicTransition/LICENSE b/ui/transition/BasicTransition/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/transition/BasicTransition/LICENSE
+++ b/ui/transition/BasicTransition/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
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-
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diff --git a/ui/transition/BasicTransition/README.md b/ui/transition/BasicTransition/README.md
index 2ed6ed2a..c0cb9cae 100644
--- a/ui/transition/BasicTransition/README.md
+++ b/ui/transition/BasicTransition/README.md
@@ -33,8 +33,8 @@ take place.
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -63,7 +63,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/transition/BasicTransition/gradle/wrapper/gradle-wrapper.jar b/ui/transition/BasicTransition/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/transition/BasicTransition/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/transition/BasicTransition/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/transition/BasicTransition/gradle/wrapper/gradle-wrapper.properties b/ui/transition/BasicTransition/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/transition/BasicTransition/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/transition/BasicTransition/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/transition/BasicTransition/gradlew b/ui/transition/BasicTransition/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/transition/BasicTransition/gradlew
+++ b/ui/transition/BasicTransition/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/transition/BasicTransition/gradlew.bat b/ui/transition/BasicTransition/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/transition/BasicTransition/gradlew.bat
+++ b/ui/transition/BasicTransition/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/transition/CustomTransition/LICENSE b/ui/transition/CustomTransition/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/transition/CustomTransition/LICENSE
+++ b/ui/transition/CustomTransition/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
-Attribution-NonCommercial-ShareAlike 4.0 International
-
-=======================================================================
-
-Creative Commons Corporation ("Creative Commons") is not a law firm and
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diff --git a/ui/transition/CustomTransition/README.md b/ui/transition/CustomTransition/README.md
index 2b88dc13..23a39ab7 100644
--- a/ui/transition/CustomTransition/README.md
+++ b/ui/transition/CustomTransition/README.md
@@ -32,8 +32,8 @@ TransitionManager.go(mScenes[mCurrentScene], mTransition);
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -62,7 +62,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/transition/CustomTransition/gradle/wrapper/gradle-wrapper.jar b/ui/transition/CustomTransition/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/transition/CustomTransition/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/transition/CustomTransition/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/transition/CustomTransition/gradle/wrapper/gradle-wrapper.properties b/ui/transition/CustomTransition/gradle/wrapper/gradle-wrapper.properties
index a3c0811b..ae45383b 100644
--- a/ui/transition/CustomTransition/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/transition/CustomTransition/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Thu Feb 06 10:46:09 GMT 2014
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/transition/CustomTransition/gradlew b/ui/transition/CustomTransition/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/transition/CustomTransition/gradlew
+++ b/ui/transition/CustomTransition/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/transition/CustomTransition/gradlew.bat b/ui/transition/CustomTransition/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/transition/CustomTransition/gradlew.bat
+++ b/ui/transition/CustomTransition/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/views/CardView/.google/packaging.yaml b/ui/views/CardView/.google/packaging.yaml
index bc808780..17dcb01c 100644
--- a/ui/views/CardView/.google/packaging.yaml
+++ b/ui/views/CardView/.google/packaging.yaml
@@ -1,3 +1,4 @@
+
 # GOOGLE SAMPLE PACKAGING DATA
 #
 # This file is used by Google as part of our samples packaging process.
@@ -8,9 +9,5 @@ technologies: [Android]
 categories:   [UI]
 languages:    [Java]
 solutions:    [Mobile]
-github:       android-CardView
-level:        INTERMEDIATE
-icon:         CardViewSample/src/main/res/drawable-xxhdpi/ic_launcher.png
-doc_refs:
-    - android:preview/material/ui-widgets.html
+github:       android-CardView Sample
 license: apache2
diff --git a/ui/views/CardView/LICENSE b/ui/views/CardView/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/views/CardView/LICENSE
+++ b/ui/views/CardView/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
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-
-=======================================================================
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diff --git a/ui/views/CardView/README.md b/ui/views/CardView/README.md
index 3caad206..e4a83cfe 100644
--- a/ui/views/CardView/README.md
+++ b/ui/views/CardView/README.md
@@ -2,13 +2,14 @@
 Android CardView Sample Sample
 ===================================
 
-This sample demonstrates how to use CardView introduced in the support library in Android 5.0.
+This sample demonstrates how to use CardView introduced in the support library in
+Android 5.0.
 
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Getting Started
@@ -32,7 +33,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/views/CardView/gradle/wrapper/gradle-wrapper.jar b/ui/views/CardView/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/views/CardView/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/views/CardView/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/views/CardView/gradle/wrapper/gradle-wrapper.properties b/ui/views/CardView/gradle/wrapper/gradle-wrapper.properties
index 349ecb6c..ae45383b 100644
--- a/ui/views/CardView/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/views/CardView/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Fri Aug 22 14:55:27 JST 2014
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/views/CardView/gradlew b/ui/views/CardView/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/views/CardView/gradlew
+++ b/ui/views/CardView/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/views/CardView/gradlew.bat b/ui/views/CardView/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/views/CardView/gradlew.bat
+++ b/ui/views/CardView/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/views/CardView/kotlinApp/Application/build.gradle b/ui/views/CardView/kotlinApp/Application/build.gradle
index f9ba0087..a4159bed 100644
--- a/ui/views/CardView/kotlinApp/Application/build.gradle
+++ b/ui/views/CardView/kotlinApp/Application/build.gradle
@@ -31,6 +31,6 @@ android {
 
 dependencies {
     implementation'com.android.support:cardview-v7:27.0.2'
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$rootProject.ext.kotlinVersion"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$rootProject.ext.kotlinVersion"
     androidTestImplementation "com.android.support.test.espresso:espresso-core:$rootProject.ext.espressoVersion"
 }
diff --git a/ui/views/CardView/kotlinApp/build.gradle b/ui/views/CardView/kotlinApp/build.gradle
index 16922ca7..a5f3276a 100644
--- a/ui/views/CardView/kotlinApp/build.gradle
+++ b/ui/views/CardView/kotlinApp/build.gradle
@@ -6,7 +6,7 @@ buildscript {
 
         espressoVersion = '3.0.1'
         junitVersion = '4.12'
-        kotlinVersion = '1.2.10'
+        kotlinVersion = '1.3.11'
         supportLibVersion = '27.0.2'
         supportTestVersion = '1.0.1'
     }
@@ -15,7 +15,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:3.2.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
     }
 }
diff --git a/ui/views/CardView/kotlinApp/gradle/wrapper/gradle-wrapper.properties b/ui/views/CardView/kotlinApp/gradle/wrapper/gradle-wrapper.properties
index a611e637..f9415508 100644
--- a/ui/views/CardView/kotlinApp/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/views/CardView/kotlinApp/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Thu Dec 14 19:44:05 PST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
\ No newline at end of file
diff --git a/ui/views/Clipping/ClippingBasic/LICENSE b/ui/views/Clipping/ClippingBasic/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/views/Clipping/ClippingBasic/LICENSE
+++ b/ui/views/Clipping/ClippingBasic/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
-Attribution-NonCommercial-ShareAlike 4.0 International
-
-=======================================================================
-
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diff --git a/ui/views/Clipping/ClippingBasic/README.md b/ui/views/Clipping/ClippingBasic/README.md
index c68f5a89..da9625ca 100644
--- a/ui/views/Clipping/ClippingBasic/README.md
+++ b/ui/views/Clipping/ClippingBasic/README.md
@@ -47,8 +47,8 @@ clippedView.setClipToOutline(true); // Setting false disable clipping
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -77,7 +77,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/views/Clipping/ClippingBasic/gradle/wrapper/gradle-wrapper.jar b/ui/views/Clipping/ClippingBasic/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/views/Clipping/ClippingBasic/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/views/Clipping/ClippingBasic/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/views/Clipping/ClippingBasic/gradle/wrapper/gradle-wrapper.properties b/ui/views/Clipping/ClippingBasic/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/views/Clipping/ClippingBasic/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/views/Clipping/ClippingBasic/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/views/Clipping/ClippingBasic/gradlew b/ui/views/Clipping/ClippingBasic/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/views/Clipping/ClippingBasic/gradlew
+++ b/ui/views/Clipping/ClippingBasic/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/views/Clipping/ClippingBasic/gradlew.bat b/ui/views/Clipping/ClippingBasic/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/views/Clipping/ClippingBasic/gradlew.bat
+++ b/ui/views/Clipping/ClippingBasic/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/views/Elevation/ElevationBasic/LICENSE b/ui/views/Elevation/ElevationBasic/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/views/Elevation/ElevationBasic/LICENSE
+++ b/ui/views/Elevation/ElevationBasic/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
-Attribution-NonCommercial-ShareAlike 4.0 International
-
-=======================================================================
-
-Creative Commons Corporation ("Creative Commons") is not a law firm and
-does not provide legal services or legal advice. Distribution of
-Creative Commons public licenses does not create a lawyer-client or
-other relationship. Creative Commons makes its licenses and related
-information available on an "as-is" basis. Creative Commons gives no
-warranties regarding its licenses, any material licensed under their
-terms and conditions, or any related information. Creative Commons
-disclaims all liability for damages resulting from their use to the
-fullest extent possible.
-
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diff --git a/ui/views/Elevation/ElevationBasic/README.md b/ui/views/Elevation/ElevationBasic/README.md
index 1405d711..7a59f68f 100644
--- a/ui/views/Elevation/ElevationBasic/README.md
+++ b/ui/views/Elevation/ElevationBasic/README.md
@@ -41,8 +41,8 @@ The elevation reverts back once the touch is removed.
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -71,7 +71,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/views/Elevation/ElevationBasic/gradle/wrapper/gradle-wrapper.jar b/ui/views/Elevation/ElevationBasic/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/views/Elevation/ElevationBasic/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/views/Elevation/ElevationBasic/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/views/Elevation/ElevationBasic/gradle/wrapper/gradle-wrapper.properties b/ui/views/Elevation/ElevationBasic/gradle/wrapper/gradle-wrapper.properties
index 1371e511..ae45383b 100644
--- a/ui/views/Elevation/ElevationBasic/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/views/Elevation/ElevationBasic/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Mon May 19 15:36:48 BST 2014
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/views/Elevation/ElevationBasic/gradlew b/ui/views/Elevation/ElevationBasic/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/views/Elevation/ElevationBasic/gradlew
+++ b/ui/views/Elevation/ElevationBasic/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/views/Elevation/ElevationBasic/gradlew.bat b/ui/views/Elevation/ElevationBasic/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/views/Elevation/ElevationBasic/gradlew.bat
+++ b/ui/views/Elevation/ElevationBasic/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/views/Elevation/ElevationDrag/LICENSE b/ui/views/Elevation/ElevationDrag/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/views/Elevation/ElevationDrag/LICENSE
+++ b/ui/views/Elevation/ElevationDrag/LICENSE
@@ -201,447 +201,3 @@ Apache License
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diff --git a/ui/views/Elevation/ElevationDrag/README.md b/ui/views/Elevation/ElevationDrag/README.md
index 6cad94ab..c697bd30 100644
--- a/ui/views/Elevation/ElevationDrag/README.md
+++ b/ui/views/Elevation/ElevationDrag/README.md
@@ -24,8 +24,8 @@ See [Assign Elevation to Your Views][1] for more info.
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -54,7 +54,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/views/Elevation/ElevationDrag/gradle/wrapper/gradle-wrapper.jar b/ui/views/Elevation/ElevationDrag/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/views/Elevation/ElevationDrag/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/views/Elevation/ElevationDrag/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/views/Elevation/ElevationDrag/gradle/wrapper/gradle-wrapper.properties b/ui/views/Elevation/ElevationDrag/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/views/Elevation/ElevationDrag/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/views/Elevation/ElevationDrag/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/views/Elevation/ElevationDrag/gradlew b/ui/views/Elevation/ElevationDrag/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/views/Elevation/ElevationDrag/gradlew
+++ b/ui/views/Elevation/ElevationDrag/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/views/Elevation/ElevationDrag/gradlew.bat b/ui/views/Elevation/ElevationDrag/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/views/Elevation/ElevationDrag/gradlew.bat
+++ b/ui/views/Elevation/ElevationDrag/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/views/FloatingActionButton/FloatingActionButtonBasic/LICENSE b/ui/views/FloatingActionButton/FloatingActionButtonBasic/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/views/FloatingActionButton/FloatingActionButtonBasic/LICENSE
+++ b/ui/views/FloatingActionButton/FloatingActionButtonBasic/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
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-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
-Attribution-NonCommercial-ShareAlike 4.0 International
-
-=======================================================================
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diff --git a/ui/views/FloatingActionButton/FloatingActionButtonBasic/gradle/wrapper/gradle-wrapper.jar b/ui/views/FloatingActionButton/FloatingActionButtonBasic/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/views/FloatingActionButton/FloatingActionButtonBasic/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/views/FloatingActionButton/FloatingActionButtonBasic/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/views/FloatingActionButton/FloatingActionButtonBasic/gradle/wrapper/gradle-wrapper.properties b/ui/views/FloatingActionButton/FloatingActionButtonBasic/gradle/wrapper/gradle-wrapper.properties
index 3ba6b0fe..ae45383b 100644
--- a/ui/views/FloatingActionButton/FloatingActionButtonBasic/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/views/FloatingActionButton/FloatingActionButtonBasic/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Tue Oct 14 12:13:20 MDT 2014
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/views/FloatingActionButton/FloatingActionButtonBasic/gradlew b/ui/views/FloatingActionButton/FloatingActionButtonBasic/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/views/FloatingActionButton/FloatingActionButtonBasic/gradlew
+++ b/ui/views/FloatingActionButton/FloatingActionButtonBasic/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/views/FloatingActionButton/FloatingActionButtonBasic/gradlew.bat b/ui/views/FloatingActionButton/FloatingActionButtonBasic/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/views/FloatingActionButton/FloatingActionButtonBasic/gradlew.bat
+++ b/ui/views/FloatingActionButton/FloatingActionButtonBasic/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/views/HorizontalPaging/LICENSE b/ui/views/HorizontalPaging/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/views/HorizontalPaging/LICENSE
+++ b/ui/views/HorizontalPaging/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
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-
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-
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diff --git a/ui/views/HorizontalPaging/README.md b/ui/views/HorizontalPaging/README.md
index 3a149047..2694e667 100644
--- a/ui/views/HorizontalPaging/README.md
+++ b/ui/views/HorizontalPaging/README.md
@@ -30,8 +30,8 @@ know the selected tab, so you can update your ActionBar with `setSelectedNavigat
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -60,7 +60,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/views/HorizontalPaging/gradle/wrapper/gradle-wrapper.jar b/ui/views/HorizontalPaging/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/views/HorizontalPaging/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/views/HorizontalPaging/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/views/HorizontalPaging/gradle/wrapper/gradle-wrapper.properties b/ui/views/HorizontalPaging/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/views/HorizontalPaging/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/views/HorizontalPaging/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/views/HorizontalPaging/gradlew b/ui/views/HorizontalPaging/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/views/HorizontalPaging/gradlew
+++ b/ui/views/HorizontalPaging/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/views/HorizontalPaging/gradlew.bat b/ui/views/HorizontalPaging/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/views/HorizontalPaging/gradlew.bat
+++ b/ui/views/HorizontalPaging/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/views/HorizontalPaging/template-params.xml b/ui/views/HorizontalPaging/template-params.xml
index ba748cc7..ab079227 100644
--- a/ui/views/HorizontalPaging/template-params.xml
+++ b/ui/views/HorizontalPaging/template-params.xml
@@ -20,7 +20,7 @@
     <package>com.example.android.horizontalpaging</package>
 
     <!-- change minSdk if needed-->
-    <minSdk>11</minSdk>
+    <minSdk>14</minSdk>
 
     <strings>
         <intro>
diff --git a/ui/views/NavigationDrawer/LICENSE b/ui/views/NavigationDrawer/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/views/NavigationDrawer/LICENSE
+++ b/ui/views/NavigationDrawer/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
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-
-=======================================================================
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diff --git a/ui/views/NavigationDrawer/README.md b/ui/views/NavigationDrawer/README.md
index 991513be..cb3d4307 100644
--- a/ui/views/NavigationDrawer/README.md
+++ b/ui/views/NavigationDrawer/README.md
@@ -8,8 +8,8 @@ support library.
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Getting Started
@@ -33,7 +33,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/views/NavigationDrawer/gradle/wrapper/gradle-wrapper.jar b/ui/views/NavigationDrawer/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/views/NavigationDrawer/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/views/NavigationDrawer/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/views/NavigationDrawer/gradle/wrapper/gradle-wrapper.properties b/ui/views/NavigationDrawer/gradle/wrapper/gradle-wrapper.properties
index b7d572bb..ae45383b 100644
--- a/ui/views/NavigationDrawer/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/views/NavigationDrawer/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Mon Jun 09 15:04:51 BST 2014
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/views/NavigationDrawer/gradlew b/ui/views/NavigationDrawer/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/views/NavigationDrawer/gradlew
+++ b/ui/views/NavigationDrawer/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/views/NavigationDrawer/gradlew.bat b/ui/views/NavigationDrawer/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/views/NavigationDrawer/gradlew.bat
+++ b/ui/views/NavigationDrawer/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/views/NavigationDrawer/kotlinApp/Application/build.gradle b/ui/views/NavigationDrawer/kotlinApp/Application/build.gradle
index 36d1ab8c..eac08d8e 100644
--- a/ui/views/NavigationDrawer/kotlinApp/Application/build.gradle
+++ b/ui/views/NavigationDrawer/kotlinApp/Application/build.gradle
@@ -31,5 +31,5 @@ dependencies {
     implementation "com.android.support:appcompat-v7:$rootProject.ext.supportLibVersion"
     implementation "com.android.support:cardview-v7:$rootProject.ext.supportLibVersion"
     implementation "com.android.support:recyclerview-v7:$rootProject.supportLibVersion"
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$rootProject.ext.kotlinVersion"
-}
\ No newline at end of file
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$rootProject.ext.kotlinVersion"
+}
diff --git a/ui/views/NavigationDrawer/kotlinApp/build.gradle b/ui/views/NavigationDrawer/kotlinApp/build.gradle
index 3b2073ba..6508d966 100644
--- a/ui/views/NavigationDrawer/kotlinApp/build.gradle
+++ b/ui/views/NavigationDrawer/kotlinApp/build.gradle
@@ -4,7 +4,7 @@ buildscript {
         minSdkVersion = 21
         targetSdkVersion = 27
 
-        kotlinVersion = '1.2.10'
+        kotlinVersion = '1.3.11'
         supportLibVersion = '27.0.2'
     }
     repositories {
@@ -12,7 +12,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:3.2.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
     }
 }
@@ -26,4 +26,4 @@ allprojects {
 
 task clean(type: Delete) {
     delete rootProject.buildDir
-}
\ No newline at end of file
+}
diff --git a/ui/views/NavigationDrawer/kotlinApp/gradle/wrapper/gradle-wrapper.properties b/ui/views/NavigationDrawer/kotlinApp/gradle/wrapper/gradle-wrapper.properties
index bd46b793..f9415508 100644
--- a/ui/views/NavigationDrawer/kotlinApp/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/views/NavigationDrawer/kotlinApp/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Tue Jan 09 12:45:11 PST 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
diff --git a/ui/views/RecyclerView/.google/packaging.yaml b/ui/views/RecyclerView/.google/packaging.yaml
index b850c529..21c48462 100644
--- a/ui/views/RecyclerView/.google/packaging.yaml
+++ b/ui/views/RecyclerView/.google/packaging.yaml
@@ -1,3 +1,4 @@
+
 # GOOGLE SAMPLE PACKAGING DATA
 #
 # This file is used by Google as part of our samples packaging process.
@@ -5,12 +6,15 @@
 ---
 status:       PUBLISHED
 technologies: [Android]
-categories:   [UI]
+categories:   [UI, Views]
 languages:    [Java]
 solutions:    [Mobile]
 github:       android-RecyclerView
 level:        INTERMEDIATE
-icon:         RecyclerViewSample/src/main/res/drawable-xxhdpi/ic_launcher.png
-doc_refs:
-    - android:preview/material/ui-widgets.html
+icon:         screenshots/icon-web.png
+apiRefs:
+    - android:android.support.v7.widget.RecyclerView
+    - android:android.support.v7.widget.LinearLayoutManager
+    - android:android.support.v7.widget.GridLayoutManager
+    - android:android.support.v7.widget.RecyclerView.ViewHolder
 license: apache2
diff --git a/ui/views/RecyclerView/LICENSE b/ui/views/RecyclerView/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/views/RecyclerView/LICENSE
+++ b/ui/views/RecyclerView/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
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diff --git a/ui/views/RecyclerView/README.md b/ui/views/RecyclerView/README.md
index c510491b..82bf4758 100644
--- a/ui/views/RecyclerView/README.md
+++ b/ui/views/RecyclerView/README.md
@@ -29,8 +29,8 @@ tapped. Use radio buttons to toggle between [LinearLayoutManager][2] and
 Pre-requisites
 --------------
 
-- Android SDK 26
-- Android Build Tools v26.0.1
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -59,7 +59,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2017 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/views/RecyclerView/gradle/wrapper/gradle-wrapper.jar b/ui/views/RecyclerView/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/views/RecyclerView/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/views/RecyclerView/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/views/RecyclerView/gradle/wrapper/gradle-wrapper.properties b/ui/views/RecyclerView/gradle/wrapper/gradle-wrapper.properties
index 56fe372f..ae45383b 100644
--- a/ui/views/RecyclerView/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/views/RecyclerView/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Mon Sep 08 13:53:18 PDT 2014
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/views/RecyclerView/gradlew b/ui/views/RecyclerView/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/views/RecyclerView/gradlew
+++ b/ui/views/RecyclerView/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/views/RecyclerView/gradlew.bat b/ui/views/RecyclerView/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/views/RecyclerView/gradlew.bat
+++ b/ui/views/RecyclerView/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/views/RecyclerView/kotlinApp/gradle/wrapper/gradle-wrapper.jar b/ui/views/RecyclerView/kotlinApp/gradle/wrapper/gradle-wrapper.jar
index 13372aef..94336fca 100644
--- a/ui/views/RecyclerView/kotlinApp/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/views/RecyclerView/kotlinApp/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/views/RecyclerView/kotlinApp/gradle/wrapper/gradle-wrapper.properties b/ui/views/RecyclerView/kotlinApp/gradle/wrapper/gradle-wrapper.properties
index 96d282a7..ae45383b 100644
--- a/ui/views/RecyclerView/kotlinApp/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/views/RecyclerView/kotlinApp/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Thu Jan 10 13:45:50 PST 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip
diff --git a/ui/views/RecyclerView/kotlinApp/gradlew b/ui/views/RecyclerView/kotlinApp/gradlew
index 9d82f789..cccdd3d5 100755
--- a/ui/views/RecyclerView/kotlinApp/gradlew
+++ b/ui/views/RecyclerView/kotlinApp/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,26 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >/dev/null
-APP_HOME="`pwd -P`"
-cd "$SAVED" >/dev/null
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -85,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -150,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/views/RecyclerView/kotlinApp/gradlew.bat b/ui/views/RecyclerView/kotlinApp/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/views/RecyclerView/kotlinApp/gradlew.bat
+++ b/ui/views/RecyclerView/kotlinApp/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/views/RecyclerView/template-params.xml b/ui/views/RecyclerView/template-params.xml
index 2634a071..b221221d 100644
--- a/ui/views/RecyclerView/template-params.xml
+++ b/ui/views/RecyclerView/template-params.xml
@@ -25,7 +25,7 @@
     <dependency>com.android.support:recyclerview-v7:24.0.0</dependency>
 
     <!-- change minSdk if needed-->
-    <minSdk>7</minSdk>
+    <minSdk>14</minSdk>
 
 
     <strings>
diff --git a/ui/views/RevealEffect/RevealEffectBasic/LICENSE b/ui/views/RevealEffect/RevealEffectBasic/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/views/RevealEffect/RevealEffectBasic/LICENSE
+++ b/ui/views/RevealEffect/RevealEffectBasic/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
-Attribution-NonCommercial-ShareAlike 4.0 International
-
-=======================================================================
-
-Creative Commons Corporation ("Creative Commons") is not a law firm and
-does not provide legal services or legal advice. Distribution of
-Creative Commons public licenses does not create a lawyer-client or
-other relationship. Creative Commons makes its licenses and related
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-warranties regarding its licenses, any material licensed under their
-terms and conditions, or any related information. Creative Commons
-disclaims all liability for damages resulting from their use to the
-fullest extent possible.
-
-Using Creative Commons Public Licenses
-
-Creative Commons public licenses provide a standard set of terms and
-conditions that creators and other rights holders may use to share
-original works of authorship and other material subject to copyright
-and certain other rights specified in the public license below. The
-following considerations are for informational purposes only, are not
-exhaustive, and do not form part of our licenses.
-
-     Considerations for licensors: Our public licenses are
-     intended for use by those authorized to give the public
-     permission to use material in ways otherwise restricted by
-     copyright and certain other rights. Our licenses are
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diff --git a/ui/views/RevealEffect/RevealEffectBasic/gradle/wrapper/gradle-wrapper.jar b/ui/views/RevealEffect/RevealEffectBasic/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/views/RevealEffect/RevealEffectBasic/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/views/RevealEffect/RevealEffectBasic/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/views/RevealEffect/RevealEffectBasic/gradle/wrapper/gradle-wrapper.properties b/ui/views/RevealEffect/RevealEffectBasic/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/views/RevealEffect/RevealEffectBasic/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/views/RevealEffect/RevealEffectBasic/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/views/RevealEffect/RevealEffectBasic/gradlew b/ui/views/RevealEffect/RevealEffectBasic/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/views/RevealEffect/RevealEffectBasic/gradlew
+++ b/ui/views/RevealEffect/RevealEffectBasic/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/views/RevealEffect/RevealEffectBasic/gradlew.bat b/ui/views/RevealEffect/RevealEffectBasic/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/views/RevealEffect/RevealEffectBasic/gradlew.bat
+++ b/ui/views/RevealEffect/RevealEffectBasic/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/views/SlidingTabs/SlidingTabsBasic/LICENSE b/ui/views/SlidingTabs/SlidingTabsBasic/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/views/SlidingTabs/SlidingTabsBasic/LICENSE
+++ b/ui/views/SlidingTabs/SlidingTabsBasic/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
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diff --git a/ui/views/SlidingTabs/SlidingTabsBasic/README.md b/ui/views/SlidingTabs/SlidingTabsBasic/README.md
index 4830f0c4..39aae3a8 100644
--- a/ui/views/SlidingTabs/SlidingTabsBasic/README.md
+++ b/ui/views/SlidingTabs/SlidingTabsBasic/README.md
@@ -8,8 +8,8 @@ ViewPager title strip which gives continuous feedback to the user when scrolling
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Getting Started
@@ -33,7 +33,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/views/SlidingTabs/SlidingTabsBasic/gradle/wrapper/gradle-wrapper.jar b/ui/views/SlidingTabs/SlidingTabsBasic/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/views/SlidingTabs/SlidingTabsBasic/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/views/SlidingTabs/SlidingTabsBasic/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/views/SlidingTabs/SlidingTabsBasic/gradle/wrapper/gradle-wrapper.properties b/ui/views/SlidingTabs/SlidingTabsBasic/gradle/wrapper/gradle-wrapper.properties
index f8e553a6..ae45383b 100644
--- a/ui/views/SlidingTabs/SlidingTabsBasic/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/views/SlidingTabs/SlidingTabsBasic/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Thu Feb 06 10:46:09 GMT 2014
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
diff --git a/ui/views/SlidingTabs/SlidingTabsBasic/gradlew b/ui/views/SlidingTabs/SlidingTabsBasic/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/views/SlidingTabs/SlidingTabsBasic/gradlew
+++ b/ui/views/SlidingTabs/SlidingTabsBasic/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/views/SlidingTabs/SlidingTabsBasic/gradlew.bat b/ui/views/SlidingTabs/SlidingTabsBasic/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/views/SlidingTabs/SlidingTabsBasic/gradlew.bat
+++ b/ui/views/SlidingTabs/SlidingTabsBasic/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/views/SlidingTabs/SlidingTabsColors/LICENSE b/ui/views/SlidingTabs/SlidingTabsColors/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/views/SlidingTabs/SlidingTabsColors/LICENSE
+++ b/ui/views/SlidingTabs/SlidingTabsColors/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
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-
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diff --git a/ui/views/SlidingTabs/SlidingTabsColors/README.md b/ui/views/SlidingTabs/SlidingTabsColors/README.md
index 5cc3ca98..9169b54c 100644
--- a/ui/views/SlidingTabs/SlidingTabsColors/README.md
+++ b/ui/views/SlidingTabs/SlidingTabsColors/README.md
@@ -25,8 +25,8 @@ layout ID of the custom layout.
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -55,7 +55,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/views/SlidingTabs/SlidingTabsColors/gradle/wrapper/gradle-wrapper.jar b/ui/views/SlidingTabs/SlidingTabsColors/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/views/SlidingTabs/SlidingTabsColors/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/views/SlidingTabs/SlidingTabsColors/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/views/SlidingTabs/SlidingTabsColors/gradle/wrapper/gradle-wrapper.properties b/ui/views/SlidingTabs/SlidingTabsColors/gradle/wrapper/gradle-wrapper.properties
index 28a52c61..ae45383b 100644
--- a/ui/views/SlidingTabs/SlidingTabsColors/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/views/SlidingTabs/SlidingTabsColors/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Thu Feb 06 11:07:10 GMT 2014
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/views/SlidingTabs/SlidingTabsColors/gradlew b/ui/views/SlidingTabs/SlidingTabsColors/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/views/SlidingTabs/SlidingTabsColors/gradlew
+++ b/ui/views/SlidingTabs/SlidingTabsColors/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/views/SlidingTabs/SlidingTabsColors/gradlew.bat b/ui/views/SlidingTabs/SlidingTabsColors/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/views/SlidingTabs/SlidingTabsColors/gradlew.bat
+++ b/ui/views/SlidingTabs/SlidingTabsColors/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/LICENSE b/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/LICENSE
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
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-
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diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/README.md b/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/README.md
index 9fa2f5aa..4013dd17 100644
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/README.md
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/README.md
@@ -9,8 +9,8 @@ In this sample the View which can be refreshed is a ListView.
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Getting Started
@@ -34,7 +34,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/gradle/wrapper/gradle-wrapper.jar b/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/gradle/wrapper/gradle-wrapper.properties b/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/gradle/wrapper/gradle-wrapper.properties
index 7a0d3e95..ae45383b 100644
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Thu Apr 03 10:27:29 BST 2014
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/gradlew b/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/gradlew
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/gradlew.bat b/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/gradlew.bat
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshLayoutBasic/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/LICENSE b/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/LICENSE
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
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diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/README.md b/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/README.md
index 85840ea6..0fa1b05f 100644
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/README.md
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/README.md
@@ -23,8 +23,8 @@ action from the action bar also refreshes the list.
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -53,7 +53,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/gradle/wrapper/gradle-wrapper.jar b/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/gradle/wrapper/gradle-wrapper.properties b/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/gradlew b/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/gradlew
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/gradlew.bat b/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/gradlew.bat
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshListFragment/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/LICENSE b/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/LICENSE
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
-Attribution-NonCommercial-ShareAlike 4.0 International
-
-=======================================================================
-
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diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/README.md b/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/README.md
index f57a8abe..9bcd5034 100644
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/README.md
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/README.md
@@ -10,8 +10,8 @@ contains a scrollable GridView, along with a TextView empty view.
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Getting Started
@@ -35,7 +35,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/gradle/wrapper/gradle-wrapper.jar b/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/gradle/wrapper/gradle-wrapper.properties b/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/gradlew b/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/gradlew
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/gradlew.bat b/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/gradlew.bat
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/template-params.xml b/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/template-params.xml
index c4664035..ad1ad5e6 100644
--- a/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/template-params.xml
+++ b/ui/views/SwipeRefreshLayout/SwipeRefreshMultipleViews/template-params.xml
@@ -23,7 +23,7 @@
     <package>com.example.android.swiperefreshmultipleviews</package>
 
     <!-- change minSdk if needed-->
-    <minSdk>9</minSdk>
+    <minSdk>14</minSdk>
     <strings>
         <intro>
             <![CDATA[
diff --git a/ui/views/TextSwitcher/LICENSE b/ui/views/TextSwitcher/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/views/TextSwitcher/LICENSE
+++ b/ui/views/TextSwitcher/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
-CC-BY-NC License
-----------------
-
-Attribution-NonCommercial-ShareAlike 4.0 International
-
-=======================================================================
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-Creative Commons Corporation ("Creative Commons") is not a law firm and
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diff --git a/ui/views/TextSwitcher/README.md b/ui/views/TextSwitcher/README.md
index ec1af646..a2988e9e 100644
--- a/ui/views/TextSwitcher/README.md
+++ b/ui/views/TextSwitcher/README.md
@@ -22,8 +22,8 @@ in and out fade animations.
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -52,7 +52,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/views/TextSwitcher/gradle/wrapper/gradle-wrapper.jar b/ui/views/TextSwitcher/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/views/TextSwitcher/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/views/TextSwitcher/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/views/TextSwitcher/gradle/wrapper/gradle-wrapper.properties b/ui/views/TextSwitcher/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/views/TextSwitcher/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/views/TextSwitcher/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/views/TextSwitcher/gradlew b/ui/views/TextSwitcher/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/views/TextSwitcher/gradlew
+++ b/ui/views/TextSwitcher/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/views/TextSwitcher/gradlew.bat b/ui/views/TextSwitcher/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/views/TextSwitcher/gradlew.bat
+++ b/ui/views/TextSwitcher/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/views/TextSwitcher/template-params.xml b/ui/views/TextSwitcher/template-params.xml
index b57e2283..b0d7982a 100644
--- a/ui/views/TextSwitcher/template-params.xml
+++ b/ui/views/TextSwitcher/template-params.xml
@@ -20,7 +20,7 @@
     <package>com.example.android.textswitcher</package>
 
     <!-- change minSdk if needed-->
-    <minSdk>7</minSdk>
+    <minSdk>14</minSdk>
 
     <strings>
         <intro>
diff --git a/ui/window/AdvancedImmersiveMode/Application/build.gradle b/ui/window/AdvancedImmersiveMode/Application/build.gradle
index c433d6bd..1a31c59e 100644
--- a/ui/window/AdvancedImmersiveMode/Application/build.gradle
+++ b/ui/window/AdvancedImmersiveMode/Application/build.gradle
@@ -6,7 +6,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.3'
+        classpath 'com.android.tools.build:gradle:3.2.1'
     }
 }
 
@@ -20,10 +20,11 @@ repositories {
 dependencies {
 
 
-        implementation "com.android.support:support-v4:27.1.1"
-        implementation "com.android.support:support-v13:27.1.1"
-        implementation "com.android.support:cardview-v7:27.1.1"
-        implementation "com.android.support:appcompat-v7:27.1.1"
+        implementation "com.android.support:support-v4:28.0.0"
+        implementation "com.android.support:support-v13:28.0.0"
+        implementation "com.android.support:cardview-v7:28.0.0"
+        implementation "com.android.support:appcompat-v7:28.0.0"
+
 
 
 
@@ -40,13 +41,11 @@ List<String> dirs = [
     'template'] // boilerplate code that is generated by the sample template process
 
 android {
-    compileSdkVersion 27
-
-    buildToolsVersion "27.0.3"
+    compileSdkVersion 28
 
     defaultConfig {
         minSdkVersion 19
-        targetSdkVersion 27
+        targetSdkVersion 28
     }
 
     compileOptions {
diff --git a/ui/window/AdvancedImmersiveMode/Application/src/main/res/values/dimens.xml b/ui/window/AdvancedImmersiveMode/Application/src/main/res/values/dimens.xml
deleted file mode 100644
index b9619b8b..00000000
--- a/ui/window/AdvancedImmersiveMode/Application/src/main/res/values/dimens.xml
+++ /dev/null
@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?><!--
- Copyright 2016 The Android Open Source Project
-
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
-
-     http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
--->
-
-<resources>
-  <dimen name="margin_large">16dp</dimen>
-</resources>
diff --git a/ui/window/AdvancedImmersiveMode/Application/src/main/res/values/strings.xml b/ui/window/AdvancedImmersiveMode/Application/src/main/res/values/strings.xml
index 8c8dbbdb..27bb0815 100644
--- a/ui/window/AdvancedImmersiveMode/Application/src/main/res/values/strings.xml
+++ b/ui/window/AdvancedImmersiveMode/Application/src/main/res/values/strings.xml
@@ -15,7 +15,6 @@
 -->
 
 <resources>
-    <string name="app_name">AdvancedImmersiveMode</string>
     <string name="enable_low_profile_mode">Enable Low Profile Mode</string>
     <string name="hide_navigation_bar">Hide Navigation bar</string>
     <string name="hide_status_bar">Hide Status Bar</string>
diff --git a/ui/window/AdvancedImmersiveMode/README.md b/ui/window/AdvancedImmersiveMode/README.md
index be27b901..431af60a 100644
--- a/ui/window/AdvancedImmersiveMode/README.md
+++ b/ui/window/AdvancedImmersiveMode/README.md
@@ -26,8 +26,8 @@ appear.
 Pre-requisites
 --------------
 
-- Android SDK 27
-- Android Build Tools v27.0.3
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -56,7 +56,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2017 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/window/AdvancedImmersiveMode/gradle/wrapper/gradle-wrapper.properties b/ui/window/AdvancedImmersiveMode/gradle/wrapper/gradle-wrapper.properties
index ce099d02..f9415508 100644
--- a/ui/window/AdvancedImmersiveMode/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/window/AdvancedImmersiveMode/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Tue Feb 11 09:26:00 PST 2014
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-bin.zip
diff --git a/ui/window/BasicImmersiveMode/LICENSE b/ui/window/BasicImmersiveMode/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/window/BasicImmersiveMode/LICENSE
+++ b/ui/window/BasicImmersiveMode/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
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-
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-
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diff --git a/ui/window/BasicImmersiveMode/README.md b/ui/window/BasicImmersiveMode/README.md
index 782ecc79..248c6ff7 100644
--- a/ui/window/BasicImmersiveMode/README.md
+++ b/ui/window/BasicImmersiveMode/README.md
@@ -19,8 +19,8 @@ SYSTEM_UI_FLAG_IMMERSIVE system ui flag. When combined with the SYSTEM_UI_FLAG_H
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -49,7 +49,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/window/BasicImmersiveMode/gradle/wrapper/gradle-wrapper.jar b/ui/window/BasicImmersiveMode/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/window/BasicImmersiveMode/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/window/BasicImmersiveMode/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/window/BasicImmersiveMode/gradle/wrapper/gradle-wrapper.properties b/ui/window/BasicImmersiveMode/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/window/BasicImmersiveMode/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/window/BasicImmersiveMode/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/window/BasicImmersiveMode/gradlew b/ui/window/BasicImmersiveMode/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/window/BasicImmersiveMode/gradlew
+++ b/ui/window/BasicImmersiveMode/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/window/BasicImmersiveMode/gradlew.bat b/ui/window/BasicImmersiveMode/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/window/BasicImmersiveMode/gradlew.bat
+++ b/ui/window/BasicImmersiveMode/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/window/DragAndDropAcrossApps/README.md b/ui/window/DragAndDropAcrossApps/README.md
index e4198fb1..5b045f82 100644
--- a/ui/window/DragAndDropAcrossApps/README.md
+++ b/ui/window/DragAndDropAcrossApps/README.md
@@ -51,7 +51,7 @@ Pre-requisites
 --------------
 
 - Android SDK 28
-- Android Build Tools v28.0.0
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
diff --git a/ui/window/DragAndDropAcrossApps/build.gradle b/ui/window/DragAndDropAcrossApps/build.gradle
index e5fd788a..37fe6561 100644
--- a/ui/window/DragAndDropAcrossApps/build.gradle
+++ b/ui/window/DragAndDropAcrossApps/build.gradle
@@ -1,4 +1,10 @@
 
+allprojects {
+    repositories {
+        google()
+        jcenter()
+    }
+}
 
 /*
  * Copyright 2016, The Android Open Source Project
diff --git a/ui/window/DragAndDropAcrossApps/gradle/wrapper/gradle-wrapper.properties b/ui/window/DragAndDropAcrossApps/gradle/wrapper/gradle-wrapper.properties
index cb6d377c..f9415508 100644
--- a/ui/window/DragAndDropAcrossApps/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/window/DragAndDropAcrossApps/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Mon May 02 14:15:55 AEST 2016
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-bin.zip
diff --git a/ui/window/ImmersiveMode/LICENSE b/ui/window/ImmersiveMode/LICENSE
index 4f229463..d5cf8f3a 100644
--- a/ui/window/ImmersiveMode/LICENSE
+++ b/ui/window/ImmersiveMode/LICENSE
@@ -201,447 +201,3 @@ Apache License
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-
-All image and audio files (including *.png, *.jpg, *.svg, *.mp3, *.wav 
-and *.ogg) are licensed under the CC-BY-NC license. All other files are 
-licensed under the Apache 2 license.
-
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-----------------
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diff --git a/ui/window/ImmersiveMode/README.md b/ui/window/ImmersiveMode/README.md
index a4572436..0905c953 100644
--- a/ui/window/ImmersiveMode/README.md
+++ b/ui/window/ImmersiveMode/README.md
@@ -9,8 +9,8 @@ click the "Toggle immersive mode" button, then try swiping the bar in and out!
 Pre-requisites
 --------------
 
-- Android SDK 24
-- Android Build Tools v24.0.2
+- Android SDK 28
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Getting Started
@@ -34,7 +34,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2016 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/window/ImmersiveMode/gradle/wrapper/gradle-wrapper.jar b/ui/window/ImmersiveMode/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/window/ImmersiveMode/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/window/ImmersiveMode/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/window/ImmersiveMode/gradle/wrapper/gradle-wrapper.properties b/ui/window/ImmersiveMode/gradle/wrapper/gradle-wrapper.properties
index 86fc139a..ae45383b 100644
--- a/ui/window/ImmersiveMode/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/window/ImmersiveMode/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Wed Apr 10 15:27:10 PDT 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
\ No newline at end of file
diff --git a/ui/window/ImmersiveMode/gradlew b/ui/window/ImmersiveMode/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/window/ImmersiveMode/gradlew
+++ b/ui/window/ImmersiveMode/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/window/ImmersiveMode/gradlew.bat b/ui/window/ImmersiveMode/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/window/ImmersiveMode/gradlew.bat
+++ b/ui/window/ImmersiveMode/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/window/ImmersiveMode/template-params.xml b/ui/window/ImmersiveMode/template-params.xml
index da1e5110..4d187250 100644
--- a/ui/window/ImmersiveMode/template-params.xml
+++ b/ui/window/ImmersiveMode/template-params.xml
@@ -20,7 +20,7 @@
     <package>com.example.android.immersivemode</package>
     
     <!--TODO: change minSdk if needed-->
-    <minSdk>11</minSdk>
+    <minSdk>14</minSdk>
 
 
     <strings>
diff --git a/ui/window/MultiWindowPlayground/README.md b/ui/window/MultiWindowPlayground/README.md
index ca768282..d0889ab9 100644
--- a/ui/window/MultiWindowPlayground/README.md
+++ b/ui/window/MultiWindowPlayground/README.md
@@ -48,8 +48,8 @@ Alternatively, the preferred and minimum sizes can be set in a new
 Pre-requisites
 --------------
 
-- Android SDK 27
-- Android Build Tools v27.0.3
+- Android SDK 24
+- Android Build Tools v28.0.3
 - Android Support Repository
 
 Screenshots
@@ -78,7 +78,7 @@ submitting a pull request through GitHub. Please see CONTRIBUTING.md for more de
 License
 -------
 
-Copyright 2017 The Android Open Source Project, Inc.
+Copyright 2019 The Android Open Source Project, Inc.
 
 Licensed to the Apache Software Foundation (ASF) under one or more contributor
 license agreements.  See the NOTICE file distributed with this work for
diff --git a/ui/window/MultiWindowPlayground/gradle/wrapper/gradle-wrapper.jar b/ui/window/MultiWindowPlayground/gradle/wrapper/gradle-wrapper.jar
index 8c0fb64a..94336fca 100644
--- a/ui/window/MultiWindowPlayground/gradle/wrapper/gradle-wrapper.jar
+++ b/ui/window/MultiWindowPlayground/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/window/MultiWindowPlayground/gradle/wrapper/gradle-wrapper.properties b/ui/window/MultiWindowPlayground/gradle/wrapper/gradle-wrapper.properties
index 84a13f5c..ae45383b 100644
--- a/ui/window/MultiWindowPlayground/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/window/MultiWindowPlayground/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Mon Dec 28 10:00:20 PST 2015
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-bin.zip
diff --git a/ui/window/MultiWindowPlayground/gradlew b/ui/window/MultiWindowPlayground/gradlew
index 91a7e269..cccdd3d5 100755
--- a/ui/window/MultiWindowPlayground/gradlew
+++ b/ui/window/MultiWindowPlayground/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/ui/window/MultiWindowPlayground/gradlew.bat b/ui/window/MultiWindowPlayground/gradlew.bat
index aec99730..e95643d6 100644
--- a/ui/window/MultiWindowPlayground/gradlew.bat
+++ b/ui/window/MultiWindowPlayground/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome

 

@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail

 

 :init

-@rem Get command-line arguments, handling Windowz variants

+@rem Get command-line arguments, handling Windows variants

 

 if not "%OS%" == "Windows_NT" goto win9xME_args

-if "%@eval[2+2]" == "4" goto 4NT_args

 

 :win9xME_args

 @rem Slurp the command line arguments.

@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute

 

 set CMD_LINE_ARGS=%*

-goto execute

-

-:4NT_args

-@rem Get arguments from the 4NT Shell from JP Software

-set CMD_LINE_ARGS=%$

 

 :execute

 @rem Setup the command line

diff --git a/ui/window/MultiWindowPlayground/kotlinApp/Application/build.gradle b/ui/window/MultiWindowPlayground/kotlinApp/Application/build.gradle
index c5b64a93..41383f08 100644
--- a/ui/window/MultiWindowPlayground/kotlinApp/Application/build.gradle
+++ b/ui/window/MultiWindowPlayground/kotlinApp/Application/build.gradle
@@ -21,5 +21,5 @@ android {
 
 dependencies {
     implementation "com.android.support:appcompat-v7:27.0.2"
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
 }
diff --git a/ui/window/MultiWindowPlayground/kotlinApp/build.gradle b/ui/window/MultiWindowPlayground/kotlinApp/build.gradle
index 6b3af00a..3b16773b 100644
--- a/ui/window/MultiWindowPlayground/kotlinApp/build.gradle
+++ b/ui/window/MultiWindowPlayground/kotlinApp/build.gradle
@@ -1,11 +1,11 @@
 buildscript {
-    ext.kotlin_version = '1.2.0'
+    ext.kotlin_version = '1.3.11'
     repositories {
         google()
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.1'
+        classpath 'com.android.tools.build:gradle:3.2.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
diff --git a/ui/window/MultiWindowPlayground/kotlinApp/gradle/wrapper/gradle-wrapper.properties b/ui/window/MultiWindowPlayground/kotlinApp/gradle/wrapper/gradle-wrapper.properties
index 71a62b59..f9415508 100644
--- a/ui/window/MultiWindowPlayground/kotlinApp/gradle/wrapper/gradle-wrapper.properties
+++ b/ui/window/MultiWindowPlayground/kotlinApp/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Mon Dec 28 10:00:20 PST 2015
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https://services.gradle.org/distributions/gradle-4.10.3-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
\ No newline at end of file