Downloadable Font sample.

This sample demonstrates how to request to download a font:
- From Java code
- By declarating it in the XML in advance of the usage

This sample uses a GmsCore as the font pvovider, to run the sample app,
the device needs to install at least V11 of GmsCore.

Test: Manual

Change-Id: I3c3a10f08d4f65f943eea8cf406a20d89d1318df

37 files changed, 2193 insertions, 0 deletions

diff --git a/ui/fonts/DownloadableFonts/app/build.gradle b/ui/fonts/DownloadableFonts/app/build.gradle
new file mode 100644
index 00000000..203427e2
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/build.gradle
@@ -0,0 +1,28 @@
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 'android-O'
+    buildToolsVersion "26.0.0 rc2"
+
+    defaultConfig {
+        applicationId "com.example.android.downloadablefonts"
+        // Once API level 26 SDK is launched, lower the minSdkVersion.
+        // At this moment, an app targeting the preview version of the SDK only runs on the
+        // preview device.
+        minSdkVersion 'O'
+        targetSdkVersion 'O'
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
+        }
+    }
+
+    dependencies {
+        compile 'com.android.support:appcompat-v7:26.0.0-beta1'
+        compile 'com.android.support:design:26.0.0-beta1'
+        compile 'com.android.support:cardview-v7:26.0.0-beta1'
+    }
+}
diff --git a/ui/fonts/DownloadableFonts/app/src/main/AndroidManifest.xml b/ui/fonts/DownloadableFonts/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..68ed0a2f
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/AndroidManifest.xml
@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2017 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.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.android.downloadablefonts">
+
+    <application
+        android:label="@string/app_name"
+        android:icon="@mipmap/ic_launcher"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:theme="@style/AppTheme"
+        android:allowBackup="true">
+
+        <meta-data android:name="preloaded_fonts" android:resource="@array/preloaded_fonts" />
+
+        <activity android:name="com.example.android.downloadablefonts.MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+    </application>
+</manifest>
diff --git a/ui/fonts/DownloadableFonts/app/src/main/java/com/example/android/downloadablefonts/Constants.java b/ui/fonts/DownloadableFonts/app/src/main/java/com/example/android/downloadablefonts/Constants.java
new file mode 100644
index 00000000..ca59c9ca
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/java/com/example/android/downloadablefonts/Constants.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+package com.example.android.downloadablefonts;
+
+/**
+ * Constants class
+ */
+class Constants {
+
+    static final int WIDTH_DEFAULT = 100;
+    static final int WIDTH_MAX = 1000;
+    static final int WIDTH_MIN = 0;
+
+    static final int WEIGHT_DEFAULT = 400;
+    static final int WEIGHT_MAX = 1000;
+    static final int WEIGHT_MIN = 0;
+
+    static final float ITALIC_DEFAULT = 0f;
+    static final float ITALIC_MAX = 1f;
+    static final float ITALIC_MIN = 0f;
+}
diff --git a/ui/fonts/DownloadableFonts/app/src/main/java/com/example/android/downloadablefonts/MainActivity.java b/ui/fonts/DownloadableFonts/app/src/main/java/com/example/android/downloadablefonts/MainActivity.java
new file mode 100644
index 00000000..4d9fdd34
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/java/com/example/android/downloadablefonts/MainActivity.java
@@ -0,0 +1,276 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+package com.example.android.downloadablefonts;
+
+import android.graphics.Typeface;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.HandlerThread;
+import android.support.design.widget.TextInputLayout;
+import android.support.v4.provider.FontRequest;
+import android.support.v4.provider.FontsContractCompat;
+import android.support.v4.util.ArraySet;
+import android.support.v7.app.AppCompatActivity;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.util.Log;
+import android.view.View;
+import android.widget.ArrayAdapter;
+import android.widget.AutoCompleteTextView;
+import android.widget.Button;
+import android.widget.CheckBox;
+import android.widget.ProgressBar;
+import android.widget.SeekBar;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import java.util.Arrays;
+
+import static com.example.android.downloadablefonts.Constants.ITALIC_DEFAULT;
+import static com.example.android.downloadablefonts.Constants.WEIGHT_DEFAULT;
+import static com.example.android.downloadablefonts.Constants.WEIGHT_MAX;
+import static com.example.android.downloadablefonts.Constants.WIDTH_DEFAULT;
+import static com.example.android.downloadablefonts.Constants.WIDTH_MAX;
+
+public class MainActivity extends AppCompatActivity {
+
+    private static final String TAG = "MainActivity";
+
+    private Handler mHandler = null;
+
+    private TextView mDownloadableFontTextView;
+    private SeekBar mWidthSeekBar;
+    private SeekBar mWeightSeekBar;
+    private SeekBar mItalicSeekBar;
+    private CheckBox mBestEffort;
+    private Button mRequestDownloadButton;
+
+    private ArraySet<String> mFamilyNameSet;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        initializeSeekBars();
+        mFamilyNameSet = new ArraySet<>();
+        mFamilyNameSet.addAll(Arrays.asList(getResources().getStringArray(R.array.family_names)));
+
+        mDownloadableFontTextView = findViewById(R.id.textview);
+        ArrayAdapter<String> adapter = new ArrayAdapter<>(this,
+                android.R.layout.simple_dropdown_item_1line,
+                getResources().getStringArray(R.array.family_names));
+        final TextInputLayout familyNameInput = findViewById(R.id.auto_complete_family_name_input);
+        final AutoCompleteTextView autoCompleteFamilyName = findViewById(
+                R.id.auto_complete_family_name);
+        autoCompleteFamilyName.setAdapter(adapter);
+        autoCompleteFamilyName.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence charSequence, int start, int count,
+                    int after) {
+                // No op
+            }
+
+            @Override
+            public void onTextChanged(CharSequence charSequence, int start, int count, int after) {
+                if (isValidFamilyName(charSequence.toString())) {
+                    familyNameInput.setErrorEnabled(false);
+                    familyNameInput.setError("");
+                } else {
+                    familyNameInput.setErrorEnabled(true);
+                    familyNameInput.setError(getString(R.string.invalid_family_name));
+                }
+            }
+
+            @Override
+            public void afterTextChanged(Editable editable) {
+                // No op
+            }
+        });
+
+        mRequestDownloadButton = findViewById(R.id.button_request);
+        mRequestDownloadButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                String familyName = autoCompleteFamilyName.getText().toString();
+                if (!isValidFamilyName(familyName)) {
+                    familyNameInput.setErrorEnabled(true);
+                    familyNameInput.setError(getString(R.string.invalid_family_name));
+                    Toast.makeText(
+                            MainActivity.this,
+                            R.string.invalid_input,
+                            Toast.LENGTH_SHORT).show();
+                    return;
+                }
+                requestDownload(familyName);
+                mRequestDownloadButton.setEnabled(false);
+            }
+        });
+        mBestEffort = findViewById(R.id.checkbox_best_effort);
+    }
+
+    private void requestDownload(String familyName) {
+        QueryBuilder queryBuilder = new QueryBuilder(familyName)
+                .withWidth(progressToWidth(mWidthSeekBar.getProgress()))
+                .withWeight(progressToWeight(mWeightSeekBar.getProgress()))
+                .withItalic(progressToItalic(mItalicSeekBar.getProgress()))
+                .withBestEffort(mBestEffort.isChecked());
+        String query = queryBuilder.build();
+
+        Log.d(TAG, "Requesting a font. Query: " + query);
+        FontRequest request = new FontRequest(
+                "com.google.android.gms.fonts",
+                "com.google.android.gms",
+                query,
+                R.array.com_google_android_gms_fonts_certs);
+
+        final ProgressBar progressBar = findViewById(R.id.progressBar);
+        progressBar.setVisibility(View.VISIBLE);
+
+        FontsContractCompat.FontRequestCallback callback = new FontsContractCompat
+                .FontRequestCallback() {
+            @Override
+            public void onTypefaceRetrieved(Typeface typeface) {
+                mDownloadableFontTextView.setTypeface(typeface);
+                progressBar.setVisibility(View.GONE);
+                mRequestDownloadButton.setEnabled(true);
+            }
+
+            @Override
+            public void onTypefaceRequestFailed(int reason) {
+                Toast.makeText(MainActivity.this,
+                        getString(R.string.request_failed, reason), Toast.LENGTH_LONG)
+                        .show();
+                progressBar.setVisibility(View.GONE);
+                mRequestDownloadButton.setEnabled(true);
+            }
+        };
+        FontsContractCompat
+                .requestFont(MainActivity.this, request, callback,
+                        getHandlerThreadHandler());
+    }
+
+    private void initializeSeekBars() {
+        mWidthSeekBar = findViewById(R.id.seek_bar_width);
+        int widthValue = (int) (100 * (float) WIDTH_DEFAULT / (float) WIDTH_MAX);
+        mWidthSeekBar.setProgress(widthValue);
+        final TextView widthTextView = findViewById(R.id.textview_width);
+        widthTextView.setText(String.valueOf(widthValue));
+        mWidthSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
+            @Override
+            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+                widthTextView
+                        .setText(String.valueOf(progressToWidth(progress)));
+            }
+
+            @Override
+            public void onStartTrackingTouch(SeekBar seekBar) {
+            }
+
+            @Override
+            public void onStopTrackingTouch(SeekBar seekBar) {
+            }
+        });
+
+        mWeightSeekBar = findViewById(R.id.seek_bar_weight);
+        float weightValue = (float) WEIGHT_DEFAULT / (float) WEIGHT_MAX * 100;
+        mWeightSeekBar.setProgress((int) weightValue);
+        final TextView weightTextView = findViewById(R.id.textview_weight);
+        weightTextView.setText(String.valueOf(WEIGHT_DEFAULT));
+        mWeightSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
+            @Override
+            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+                weightTextView
+                        .setText(String.valueOf(progressToWeight(progress)));
+            }
+
+            @Override
+            public void onStartTrackingTouch(SeekBar seekBar) {
+            }
+
+            @Override
+            public void onStopTrackingTouch(SeekBar seekBar) {
+            }
+        });
+
+        mItalicSeekBar = findViewById(R.id.seek_bar_italic);
+        mItalicSeekBar.setProgress((int) ITALIC_DEFAULT);
+        final TextView italicTextView = findViewById(R.id.textview_italic);
+        italicTextView.setText(String.valueOf(ITALIC_DEFAULT));
+        mItalicSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
+            @Override
+            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromuser) {
+                italicTextView
+                        .setText(String.valueOf(progressToItalic(progress)));
+            }
+
+            @Override
+            public void onStartTrackingTouch(SeekBar seekBar) {
+            }
+
+            @Override
+            public void onStopTrackingTouch(SeekBar seekBar) {
+            }
+        });
+    }
+
+    private boolean isValidFamilyName(String familyName) {
+        return familyName != null && mFamilyNameSet.contains(familyName);
+    }
+
+    private Handler getHandlerThreadHandler() {
+        if (mHandler == null) {
+            HandlerThread handlerThread = new HandlerThread("fonts");
+            handlerThread.start();
+            mHandler = new Handler(handlerThread.getLooper());
+        }
+        return mHandler;
+    }
+
+    /**
+     * Converts progress from a SeekBar to the value of width.
+     * @param progress is passed from 0 to 100 inclusive
+     * @return the converted width
+     */
+    private float progressToWidth(int progress) {
+        return progress == 0 ? 1 : progress * WIDTH_MAX / 100;
+    }
+
+    /**
+     * Converts progress from a SeekBar to the value of weight.
+     * @param progress is passed from 0 to 100 inclusive
+     * @return the converted weight
+     */
+    private int progressToWeight(int progress) {
+        if (progress == 0) {
+            return 1; // The range of the weight is between (0, 1000) (exclusive)
+        } else if (progress == 100) {
+            return WEIGHT_MAX - 1; // The range of the weight is between (0, 1000) (exclusive)
+        } else {
+            return WEIGHT_MAX * progress / 100;
+        }
+    }
+
+    /**
+     * Converts progress from a SeekBar to the value of italic.
+     * @param progress is passed from 0 to 100 inclusive.
+     * @return the converted italic
+     */
+    private float progressToItalic(int progress) {
+        return (float) progress / 100f;
+    }
+}
diff --git a/ui/fonts/DownloadableFonts/app/src/main/java/com/example/android/downloadablefonts/QueryBuilder.java b/ui/fonts/DownloadableFonts/app/src/main/java/com/example/android/downloadablefonts/QueryBuilder.java
new file mode 100644
index 00000000..1a2596c9
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/java/com/example/android/downloadablefonts/QueryBuilder.java
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+package com.example.android.downloadablefonts;
+
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+
+/**
+ * Builder class for constructing a query for downloading a font.
+ */
+class QueryBuilder {
+
+    @NonNull
+    private String mFamilyName;
+
+    @Nullable
+    private Float mWidth = null;
+
+    @Nullable
+    private Integer mWeight = null;
+
+    @Nullable
+    private Float mItalic = null;
+
+    @Nullable
+    private Boolean mBesteffort = null;
+
+    QueryBuilder(@NonNull String familyName) {
+        mFamilyName = familyName;
+    }
+
+    QueryBuilder withFamilyName(@NonNull String familyName) {
+        mFamilyName = familyName;
+        return this;
+    }
+
+    QueryBuilder withWidth(float width) {
+        if (width <= Constants.WIDTH_MIN) {
+            throw new IllegalArgumentException("Width must be more than 0");
+        }
+        mWidth = width;
+        return this;
+    }
+
+    QueryBuilder withWeight(int weight) {
+        if (weight <= Constants.WEIGHT_MIN || weight >= Constants.WEIGHT_MAX) {
+            throw new IllegalArgumentException(
+                    "Weight must be between 0 and 1000 (exclusive)");
+        }
+        mWeight = weight;
+        return this;
+    }
+
+    QueryBuilder withItalic(float italic) {
+        if (italic < Constants.ITALIC_MIN || italic > Constants.ITALIC_MAX) {
+            throw new IllegalArgumentException("Italic must be between 0 and 1 (inclusive)");
+        }
+        mItalic = italic;
+        return this;
+    }
+
+    QueryBuilder withBestEffort(boolean bestEffort) {
+        mBesteffort = bestEffort;
+        return this;
+    }
+
+    String build() {
+        if (mWeight == null && mWidth == null && mItalic == null && mBesteffort == null) {
+            return mFamilyName;
+        }
+        StringBuilder builder = new StringBuilder();
+        builder.append("name=").append(mFamilyName);
+        if (mWeight != null) {
+           builder.append("&weight=").append(mWeight);
+        }
+        if (mWidth != null) {
+            builder.append("&width=").append(mWidth);
+        }
+        if (mItalic != null) {
+            builder.append("&italic=").append(mItalic);
+        }
+        if (mBesteffort != null) {
+            builder.append("&besteffort=").append(mBesteffort);
+        }
+        return builder.toString();
+    }
+}
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/font/lobster_two.xml b/ui/fonts/DownloadableFonts/app/src/main/res/font/lobster_two.xml
new file mode 100644
index 00000000..28794824
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/font/lobster_two.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  Copyright 2017 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.
+-->
+<font-family xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    app:fontProviderAuthority="com.google.android.gms.fonts"
+    app:fontProviderPackage="com.google.android.gms"
+    app:fontProviderQuery="Lobster Two"
+    app:fontProviderCerts="@array/com_google_android_gms_fonts_certs"
+    android:fontProviderAuthority="com.google.android.gms.fonts"
+    android:fontProviderPackage="com.google.android.gms"
+    android:fontProviderQuery="Lobster Two"
+    android:fontProviderCerts="@array/com_google_android_gms_fonts_certs" />
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/layout/activity_main.xml b/ui/fonts/DownloadableFonts/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 00000000..e0ca1d51
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright 2017 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.
+-->
+<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/container"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <include layout="@layout/bottom_sheet_font_query" />
+
+    <LinearLayout
+        android:id="@+id/textview_area"
+        android:orientation="vertical"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_margin="@dimen/margin_medium" >
+
+        <TextView
+            android:id="@+id/textview"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/downloadable_font_applied_text"
+            android:textSize="20sp" />
+    </LinearLayout>
+
+    <ProgressBar
+        android:id="@+id/progressBar"
+        style="?android:attr/progressBarStyle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="top|center_horizontal"
+        android:visibility="gone" />
+</android.support.design.widget.CoordinatorLayout>
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/layout/bottom_sheet_font_query.xml b/ui/fonts/DownloadableFonts/app/src/main/res/layout/bottom_sheet_font_query.xml
new file mode 100644
index 00000000..c30193c9
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/layout/bottom_sheet_font_query.xml
@@ -0,0 +1,210 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  Copyright 2017 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.
+-->
+
+<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/bottom_sheet_font_query"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    app:behavior_peekHeight="120dp"
+    app:layout_behavior="android.support.design.widget.BottomSheetBehavior"
+    app:cardElevation="8dp">
+
+    <android.support.v4.widget.NestedScrollView
+        android:id="@+id/nested_scrollview"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <LinearLayout
+            android:id="@+id/download_font_inputs_area"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="@dimen/margin_medium"
+            android:orientation="vertical">
+
+            <LinearLayout
+                android:id="@+id/family_name_input_area"
+                android:orientation="horizontal"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="@dimen/bottom_sheet_top_margin"
+                android:layout_marginStart="@dimen/margin_large"
+                android:layout_marginEnd="@dimen/margin_large"
+                android:layout_marginBottom="@dimen/margin_large">
+
+                <android.support.design.widget.TextInputLayout
+                    android:id="@+id/auto_complete_family_name_input"
+                    android:layout_width="240dp"
+                    android:layout_height="wrap_content">
+
+                    <AutoCompleteTextView
+                        android:id="@+id/auto_complete_family_name"
+                        android:completionThreshold="1"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:hint="@string/family_name"
+                        android:singleLine="true" />
+                </android.support.design.widget.TextInputLayout>
+
+                <android.support.v4.widget.Space
+                    android:layout_weight="1"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content" />
+
+                <Button
+                    android:id="@+id/button_request"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="@string/request" />
+            </LinearLayout>
+
+
+            <LinearLayout
+                android:id="@+id/width_input_area"
+                android:orientation="vertical"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="@dimen/margin_medium"
+                android:layout_marginBottom="@dimen/margin_medium"
+                android:layout_marginStart="@dimen/margin_large"
+                android:layout_marginEnd="@dimen/margin_large">
+
+                <TextView
+                    android:id="@+id/width_seekbar_label"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_margin="@dimen/margin_small"
+                    android:text="@string/width"
+                    android:textColor="@color/accent"
+                    android:textSize="12sp" />
+
+                <LinearLayout
+                    android:id="@+id/width_seekbar_area"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:orientation="horizontal">
+
+                    <SeekBar
+                        android:id="@+id/seek_bar_width"
+                        android:layout_width="0dp"
+                        android:layout_height="wrap_content"
+                        android:layout_weight="1" />
+
+                    <TextView
+                        android:id="@+id/textview_width"
+                        android:layout_height="wrap_content"
+                        android:layout_width="80dp"
+                        android:layout_marginStart="@dimen/margin_small"
+                        android:textSize="16sp"
+                        android:gravity="end" />
+                </LinearLayout>
+            </LinearLayout>
+
+            <LinearLayout
+                android:id="@+id/weight_input_area"
+                android:orientation="vertical"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="@dimen/margin_medium"
+                android:layout_marginBottom="@dimen/margin_medium"
+                android:layout_marginStart="@dimen/margin_large"
+                android:layout_marginEnd="@dimen/margin_large">
+
+                <TextView
+                    android:id="@+id/weight_seekbar_label"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_margin="@dimen/margin_small"
+                    android:text="@string/weight"
+                    android:textColor="@color/accent"
+                    android:textSize="12sp" />
+
+                <LinearLayout
+                    android:id="@+id/weight_seekbar_area"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:orientation="horizontal">
+
+                    <SeekBar
+                        android:id="@+id/seek_bar_weight"
+                        android:layout_width="0dp"
+                        android:layout_height="wrap_content"
+                        android:layout_weight="1" />
+
+                    <TextView
+                        android:id="@+id/textview_weight"
+                        android:layout_height="wrap_content"
+                        android:layout_width="80dp"
+                        android:layout_marginStart="@dimen/margin_small"
+                        android:textSize="16sp"
+                        android:gravity="end" />
+                </LinearLayout>
+            </LinearLayout>
+
+            <LinearLayout
+                android:id="@+id/italic_input_area"
+                android:orientation="vertical"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="@dimen/margin_medium"
+                android:layout_marginBottom="@dimen/margin_medium"
+                android:layout_marginStart="@dimen/margin_large"
+                android:layout_marginEnd="@dimen/margin_large">
+
+                <TextView
+                    android:id="@+id/italic_seekbar_label"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_margin="@dimen/margin_small"
+                    android:text="@string/italic"
+                    android:textColor="@color/accent"
+                    android:textSize="12sp" />
+
+                <LinearLayout
+                    android:id="@+id/italic_seekbar_area"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:orientation="horizontal">
+
+                    <SeekBar
+                        android:id="@+id/seek_bar_italic"
+                        android:layout_width="0dp"
+                        android:layout_height="wrap_content"
+                        android:layout_weight="1" />
+
+                    <TextView
+                        android:id="@+id/textview_italic"
+                        android:layout_height="wrap_content"
+                        android:layout_width="80dp"
+                        android:layout_marginStart="@dimen/margin_small"
+                        android:textSize="16sp"
+                        android:gravity="end" />
+                </LinearLayout>
+            </LinearLayout>
+
+            <CheckBox
+                android:id="@+id/checkbox_best_effort"
+                android:text="@string/best_effort"
+                android:checked="true"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="@dimen/margin_medium"
+                android:layout_marginBottom="@dimen/margin_medium"
+                android:layout_marginStart="@dimen/margin_large"
+                android:layout_marginEnd="@dimen/margin_large" />
+        </LinearLayout>
+    </android.support.v4.widget.NestedScrollView>
+</android.support.v7.widget.CardView>
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-hdpi/ic_launcher.png b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100755
index 00000000..cb86b974
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-hdpi/ic_launcher.png
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 00000000..7502f5d6
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-mdpi/ic_launcher.png b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100755
index 00000000..bfeec7a3
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-mdpi/ic_launcher.png
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 00000000..13ca6d75
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100755
index 00000000..358442e0
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-xhdpi/ic_launcher.png
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..ff93f4d1
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100755
index 00000000..c99a1a00
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..8b642db8
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100755
index 00000000..3bcda818
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..a49362e3
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/values/colors.xml b/ui/fonts/DownloadableFonts/app/src/main/res/values/colors.xml
new file mode 100644
index 00000000..4f03db6e
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/values/colors.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ Copyright 2017 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>
+    <color name="primary">#3F51B5</color>
+    <color name="primary_dark">#303F9F</color>
+    <color name="accent">#FF4081</color>
+</resources>
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/values/dimens.xml b/ui/fonts/DownloadableFonts/app/src/main/res/values/dimens.xml
new file mode 100644
index 00000000..7d51aa89
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/values/dimens.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2017 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>
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">4dp</dimen>
+    <dimen name="activity_vertical_margin">4dp</dimen>
+    <dimen name="margin_small">8dp</dimen>
+    <dimen name="margin_medium">16dp</dimen>
+    <dimen name="margin_large">32dp</dimen>
+
+    <dimen name="bottom_sheet_top_margin">48dp</dimen>
+    <dimen name="bottom_sheet_initial_height">96dp</dimen>
+</resources>
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/values/family_names.xml b/ui/fonts/DownloadableFonts/app/src/main/res/values/family_names.xml
new file mode 100644
index 00000000..9aa96d01
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/values/family_names.xml
@@ -0,0 +1,838 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright 2017 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>
+    <string-array name="family_names">
+        <item>ABeeZee</item>
+        <item>Abel</item>
+        <item>Abhaya Libre</item>
+        <item>Abril Fatface</item>
+        <item>Aclonica</item>
+        <item>Acme</item>
+        <item>Actor</item>
+        <item>Adamina</item>
+        <item>Advent Pro</item>
+        <item>Aguafina Script</item>
+        <item>Akronim</item>
+        <item>Aladin</item>
+        <item>Aldrich</item>
+        <item>Alef</item>
+        <item>Alegreya</item>
+        <item>Alegreya SC</item>
+        <item>Alegreya Sans</item>
+        <item>Alegreya Sans SC</item>
+        <item>Alex Brush</item>
+        <item>Alfa Slab One</item>
+        <item>Alice</item>
+        <item>Alike</item>
+        <item>Alike Angular</item>
+        <item>Allan</item>
+        <item>Allerta</item>
+        <item>Allerta Stencil</item>
+        <item>Allura</item>
+        <item>Almendra</item>
+        <item>Almendra Display</item>
+        <item>Almendra SC</item>
+        <item>Amarante</item>
+        <item>Amaranth</item>
+        <item>Amatic SC</item>
+        <item>Amatica SC</item>
+        <item>Amethysta</item>
+        <item>Amiko</item>
+        <item>Amiri</item>
+        <item>Amita</item>
+        <item>Anaheim</item>
+        <item>Andada</item>
+        <item>Andika</item>
+        <item>Angkor</item>
+        <item>Annie Use Your Telescope</item>
+        <item>Anonymous Pro</item>
+        <item>Antic</item>
+        <item>Antic Didone</item>
+        <item>Antic Slab</item>
+        <item>Anton</item>
+        <item>Arapey</item>
+        <item>Arbutus</item>
+        <item>Arbutus Slab</item>
+        <item>Architects Daughter</item>
+        <item>Archivo Black</item>
+        <item>Archivo Narrow</item>
+        <item>Aref Ruqaa</item>
+        <item>Arima Madurai</item>
+        <item>Arimo</item>
+        <item>Arizonia</item>
+        <item>Armata</item>
+        <item>Arsenal</item>
+        <item>Artifika</item>
+        <item>Arvo</item>
+        <item>Arya</item>
+        <item>Asap</item>
+        <item>Asar</item>
+        <item>Asset</item>
+        <item>Assistant</item>
+        <item>Astloch</item>
+        <item>Asul</item>
+        <item>Athiti</item>
+        <item>Atma</item>
+        <item>Atomic Age</item>
+        <item>Aubrey</item>
+        <item>Audiowide</item>
+        <item>Autour One</item>
+        <item>Average</item>
+        <item>Average Sans</item>
+        <item>Averia Gruesa Libre</item>
+        <item>Averia Libre</item>
+        <item>Averia Sans Libre</item>
+        <item>Averia Serif Libre</item>
+        <item>Bad Script</item>
+        <item>Bahiana</item>
+        <item>Baloo</item>
+        <item>Baloo Bhai</item>
+        <item>Baloo Bhaina</item>
+        <item>Baloo Chettan</item>
+        <item>Baloo Da</item>
+        <item>Baloo Paaji</item>
+        <item>Baloo Tamma</item>
+        <item>Baloo Thambi</item>
+        <item>Balthazar</item>
+        <item>Bangers</item>
+        <item>Barrio</item>
+        <item>Basic</item>
+        <item>Battambang</item>
+        <item>Baumans</item>
+        <item>Bayon</item>
+        <item>Belgrano</item>
+        <item>Belleza</item>
+        <item>BenchNine</item>
+        <item>Bentham</item>
+        <item>Berkshire Swash</item>
+        <item>Bevan</item>
+        <item>Bigelow Rules</item>
+        <item>Bigshot One</item>
+        <item>Bilbo</item>
+        <item>Bilbo Swash Caps</item>
+        <item>BioRhyme</item>
+        <item>BioRhyme Expanded</item>
+        <item>Biryani</item>
+        <item>Bitter</item>
+        <item>Black Ops One</item>
+        <item>Bokor</item>
+        <item>Bonbon</item>
+        <item>Boogaloo</item>
+        <item>Bowlby One</item>
+        <item>Bowlby One SC</item>
+        <item>Brawler</item>
+        <item>Bree Serif</item>
+        <item>Bubblegum Sans</item>
+        <item>Bubbler One</item>
+        <item>Buda</item>
+        <item>Buenard</item>
+        <item>Bungee</item>
+        <item>Bungee Hairline</item>
+        <item>Bungee Inline</item>
+        <item>Bungee Outline</item>
+        <item>Bungee Shade</item>
+        <item>Butcherman</item>
+        <item>Butterfly Kids</item>
+        <item>Cabin</item>
+        <item>Cabin Condensed</item>
+        <item>Cabin Sketch</item>
+        <item>Caesar Dressing</item>
+        <item>Cagliostro</item>
+        <item>Cairo</item>
+        <item>Calligraffitti</item>
+        <item>Cambay</item>
+        <item>Cambo</item>
+        <item>Candal</item>
+        <item>Cantarell</item>
+        <item>Cantata One</item>
+        <item>Cantora One</item>
+        <item>Capriola</item>
+        <item>Cardo</item>
+        <item>Carme</item>
+        <item>Carrois Gothic</item>
+        <item>Carrois Gothic SC</item>
+        <item>Carter One</item>
+        <item>Catamaran</item>
+        <item>Caudex</item>
+        <item>Caveat</item>
+        <item>Caveat Brush</item>
+        <item>Cedarville Cursive</item>
+        <item>Ceviche One</item>
+        <item>Changa</item>
+        <item>Changa One</item>
+        <item>Chango</item>
+        <item>Chathura</item>
+        <item>Chau Philomene One</item>
+        <item>Chela One</item>
+        <item>Chelsea Market</item>
+        <item>Chenla</item>
+        <item>Cherry Cream Soda</item>
+        <item>Cherry Swash</item>
+        <item>Chewy</item>
+        <item>Chicle</item>
+        <item>Chivo</item>
+        <item>Chonburi</item>
+        <item>Cinzel</item>
+        <item>Cinzel Decorative</item>
+        <item>Clicker Script</item>
+        <item>Coda</item>
+        <item>Coda Caption</item>
+        <item>Codystar</item>
+        <item>Coiny</item>
+        <item>Combo</item>
+        <item>Comfortaa</item>
+        <item>Coming Soon</item>
+        <item>Concert One</item>
+        <item>Condiment</item>
+        <item>Content</item>
+        <item>Contrail One</item>
+        <item>Convergence</item>
+        <item>Cookie</item>
+        <item>Copse</item>
+        <item>Corben</item>
+        <item>Cormorant</item>
+        <item>Cormorant Garamond</item>
+        <item>Cormorant Infant</item>
+        <item>Cormorant SC</item>
+        <item>Cormorant Unicase</item>
+        <item>Cormorant Upright</item>
+        <item>Courgette</item>
+        <item>Cousine</item>
+        <item>Coustard</item>
+        <item>Covered By Your Grace</item>
+        <item>Crafty Girls</item>
+        <item>Creepster</item>
+        <item>Crete Round</item>
+        <item>Crimson Text</item>
+        <item>Croissant One</item>
+        <item>Crushed</item>
+        <item>Cuprum</item>
+        <item>Cutive</item>
+        <item>Cutive Mono</item>
+        <item>Damion</item>
+        <item>Dancing Script</item>
+        <item>Dangrek</item>
+        <item>David Libre</item>
+        <item>Dawning of a New Day</item>
+        <item>Days One</item>
+        <item>Dekko</item>
+        <item>Delius</item>
+        <item>Delius Swash Caps</item>
+        <item>Delius Unicase</item>
+        <item>Della Respira</item>
+        <item>Denk One</item>
+        <item>Devonshire</item>
+        <item>Dhurjati</item>
+        <item>Didact Gothic</item>
+        <item>Diplomata</item>
+        <item>Diplomata SC</item>
+        <item>Domine</item>
+        <item>Donegal One</item>
+        <item>Doppio One</item>
+        <item>Dorsa</item>
+        <item>Dosis</item>
+        <item>Dr Sugiyama</item>
+        <item>Droid Sans</item>
+        <item>Droid Sans Mono</item>
+        <item>Droid Serif</item>
+        <item>Duru Sans</item>
+        <item>Dynalight</item>
+        <item>EB Garamond</item>
+        <item>Eagle Lake</item>
+        <item>Eater</item>
+        <item>Economica</item>
+        <item>Eczar</item>
+        <item>Ek Mukta</item>
+        <item>El Messiri</item>
+        <item>Electrolize</item>
+        <item>Elsie</item>
+        <item>Elsie Swash Caps</item>
+        <item>Emblema One</item>
+        <item>Emilys Candy</item>
+        <item>Engagement</item>
+        <item>Englebert</item>
+        <item>Enriqueta</item>
+        <item>Erica One</item>
+        <item>Esteban</item>
+        <item>Euphoria Script</item>
+        <item>Ewert</item>
+        <item>Exo</item>
+        <item>Exo 2</item>
+        <item>Expletus Sans</item>
+        <item>Fanwood Text</item>
+        <item>Farsan</item>
+        <item>Fascinate</item>
+        <item>Fascinate Inline</item>
+        <item>Faster One</item>
+        <item>Fasthand</item>
+        <item>Fauna One</item>
+        <item>Federant</item>
+        <item>Federo</item>
+        <item>Felipa</item>
+        <item>Fenix</item>
+        <item>Finger Paint</item>
+        <item>Fira Mono</item>
+        <item>Fira Sans</item>
+        <item>Fira Sans Condensed</item>
+        <item>Fira Sans Extra Condensed</item>
+        <item>Fjalla One</item>
+        <item>Fjord One</item>
+        <item>Flamenco</item>
+        <item>Flavors</item>
+        <item>Fondamento</item>
+        <item>Fontdiner Swanky</item>
+        <item>Forum</item>
+        <item>Francois One</item>
+        <item>Frank Ruhl Libre</item>
+        <item>Freckle Face</item>
+        <item>Fredericka the Great</item>
+        <item>Fredoka One</item>
+        <item>Freehand</item>
+        <item>Fresca</item>
+        <item>Frijole</item>
+        <item>Fruktur</item>
+        <item>Fugaz One</item>
+        <item>GFS Didot</item>
+        <item>GFS Neohellenic</item>
+        <item>Gabriela</item>
+        <item>Gafata</item>
+        <item>Galada</item>
+        <item>Galdeano</item>
+        <item>Galindo</item>
+        <item>Gentium Basic</item>
+        <item>Gentium Book Basic</item>
+        <item>Geo</item>
+        <item>Geostar</item>
+        <item>Geostar Fill</item>
+        <item>Germania One</item>
+        <item>Gidugu</item>
+        <item>Gilda Display</item>
+        <item>Give You Glory</item>
+        <item>Glass Antiqua</item>
+        <item>Glegoo</item>
+        <item>Gloria Hallelujah</item>
+        <item>Goblin One</item>
+        <item>Gochi Hand</item>
+        <item>Gorditas</item>
+        <item>Goudy Bookletter 1911</item>
+        <item>Graduate</item>
+        <item>Grand Hotel</item>
+        <item>Gravitas One</item>
+        <item>Great Vibes</item>
+        <item>Griffy</item>
+        <item>Gruppo</item>
+        <item>Gudea</item>
+        <item>Gurajada</item>
+        <item>Habibi</item>
+        <item>Halant</item>
+        <item>Hammersmith One</item>
+        <item>Hanalei</item>
+        <item>Hanalei Fill</item>
+        <item>Handlee</item>
+        <item>Hanuman</item>
+        <item>Happy Monkey</item>
+        <item>Harmattan</item>
+        <item>Headland One</item>
+        <item>Heebo</item>
+        <item>Henny Penny</item>
+        <item>Herr Von Muellerhoff</item>
+        <item>Hind</item>
+        <item>Hind Guntur</item>
+        <item>Hind Madurai</item>
+        <item>Hind Siliguri</item>
+        <item>Hind Vadodara</item>
+        <item>Holtwood One SC</item>
+        <item>Homemade Apple</item>
+        <item>Homenaje</item>
+        <item>IM Fell DW Pica</item>
+        <item>IM Fell DW Pica SC</item>
+        <item>IM Fell Double Pica</item>
+        <item>IM Fell Double Pica SC</item>
+        <item>IM Fell English</item>
+        <item>IM Fell English SC</item>
+        <item>IM Fell French Canon</item>
+        <item>IM Fell French Canon SC</item>
+        <item>IM Fell Great Primer</item>
+        <item>IM Fell Great Primer SC</item>
+        <item>Iceberg</item>
+        <item>Iceland</item>
+        <item>Imprima</item>
+        <item>Inconsolata</item>
+        <item>Inder</item>
+        <item>Indie Flower</item>
+        <item>Inika</item>
+        <item>Inknut Antiqua</item>
+        <item>Irish Grover</item>
+        <item>Istok Web</item>
+        <item>Italiana</item>
+        <item>Italianno</item>
+        <item>Itim</item>
+        <item>Jacques Francois</item>
+        <item>Jacques Francois Shadow</item>
+        <item>Jaldi</item>
+        <item>Jim Nightshade</item>
+        <item>Jockey One</item>
+        <item>Jolly Lodger</item>
+        <item>Jomhuria</item>
+        <item>Josefin Sans</item>
+        <item>Josefin Slab</item>
+        <item>Joti One</item>
+        <item>Judson</item>
+        <item>Julee</item>
+        <item>Julius Sans One</item>
+        <item>Junge</item>
+        <item>Jura</item>
+        <item>Just Another Hand</item>
+        <item>Just Me Again Down Here</item>
+        <item>Kadwa</item>
+        <item>Kalam</item>
+        <item>Kameron</item>
+        <item>Kanit</item>
+        <item>Kantumruy</item>
+        <item>Karla</item>
+        <item>Karma</item>
+        <item>Katibeh</item>
+        <item>Kaushan Script</item>
+        <item>Kavivanar</item>
+        <item>Kavoon</item>
+        <item>Kdam Thmor</item>
+        <item>Keania One</item>
+        <item>Kelly Slab</item>
+        <item>Kenia</item>
+        <item>Khand</item>
+        <item>Khmer</item>
+        <item>Khula</item>
+        <item>Kite One</item>
+        <item>Knewave</item>
+        <item>Kotta One</item>
+        <item>Koulen</item>
+        <item>Kranky</item>
+        <item>Kreon</item>
+        <item>Kristi</item>
+        <item>Krona One</item>
+        <item>Kumar One</item>
+        <item>Kumar One Outline</item>
+        <item>Kurale</item>
+        <item>La Belle Aurore</item>
+        <item>Laila</item>
+        <item>Lakki Reddy</item>
+        <item>Lalezar</item>
+        <item>Lancelot</item>
+        <item>Lateef</item>
+        <item>Lato</item>
+        <item>League Script</item>
+        <item>Leckerli One</item>
+        <item>Ledger</item>
+        <item>Lekton</item>
+        <item>Lemon</item>
+        <item>Lemonada</item>
+        <item>Libre Baskerville</item>
+        <item>Libre Franklin</item>
+        <item>Life Savers</item>
+        <item>Lilita One</item>
+        <item>Lily Script One</item>
+        <item>Limelight</item>
+        <item>Linden Hill</item>
+        <item>Lobster</item>
+        <item>Lobster Two</item>
+        <item>Londrina Outline</item>
+        <item>Londrina Shadow</item>
+        <item>Londrina Sketch</item>
+        <item>Londrina Solid</item>
+        <item>Lora</item>
+        <item>Love Ya Like A Sister</item>
+        <item>Loved by the King</item>
+        <item>Lovers Quarrel</item>
+        <item>Luckiest Guy</item>
+        <item>Lusitana</item>
+        <item>Lustria</item>
+        <item>Macondo</item>
+        <item>Macondo Swash Caps</item>
+        <item>Mada</item>
+        <item>Magra</item>
+        <item>Maiden Orange</item>
+        <item>Maitree</item>
+        <item>Mako</item>
+        <item>Mallanna</item>
+        <item>Mandali</item>
+        <item>Marcellus</item>
+        <item>Marcellus SC</item>
+        <item>Marck Script</item>
+        <item>Margarine</item>
+        <item>Marko One</item>
+        <item>Marmelad</item>
+        <item>Martel</item>
+        <item>Martel Sans</item>
+        <item>Marvel</item>
+        <item>Mate</item>
+        <item>Mate SC</item>
+        <item>Maven Pro</item>
+        <item>McLaren</item>
+        <item>Meddon</item>
+        <item>MedievalSharp</item>
+        <item>Medula One</item>
+        <item>Meera Inimai</item>
+        <item>Megrim</item>
+        <item>Meie Script</item>
+        <item>Merienda</item>
+        <item>Merienda One</item>
+        <item>Merriweather</item>
+        <item>Merriweather Sans</item>
+        <item>Metal</item>
+        <item>Metal Mania</item>
+        <item>Metamorphous</item>
+        <item>Metrophobic</item>
+        <item>Michroma</item>
+        <item>Milonga</item>
+        <item>Miltonian</item>
+        <item>Miltonian Tattoo</item>
+        <item>Miniver</item>
+        <item>Miriam Libre</item>
+        <item>Mirza</item>
+        <item>Miss Fajardose</item>
+        <item>Mitr</item>
+        <item>Modak</item>
+        <item>Modern Antiqua</item>
+        <item>Mogra</item>
+        <item>Molengo</item>
+        <item>Molle</item>
+        <item>Monda</item>
+        <item>Monofett</item>
+        <item>Monoton</item>
+        <item>Monsieur La Doulaise</item>
+        <item>Montaga</item>
+        <item>Montez</item>
+        <item>Montserrat</item>
+        <item>Montserrat Alternates</item>
+        <item>Montserrat Subrayada</item>
+        <item>Moul</item>
+        <item>Moulpali</item>
+        <item>Mountains of Christmas</item>
+        <item>Mouse Memoirs</item>
+        <item>Mr Bedfort</item>
+        <item>Mr Dafoe</item>
+        <item>Mr De Haviland</item>
+        <item>Mrs Saint Delafield</item>
+        <item>Mrs Sheppards</item>
+        <item>Mukta Vaani</item>
+        <item>Muli</item>
+        <item>Mystery Quest</item>
+        <item>NTR</item>
+        <item>Neucha</item>
+        <item>Neuton</item>
+        <item>New Rocker</item>
+        <item>News Cycle</item>
+        <item>Niconne</item>
+        <item>Nixie One</item>
+        <item>Nobile</item>
+        <item>Nokora</item>
+        <item>Norican</item>
+        <item>Nosifer</item>
+        <item>Nothing You Could Do</item>
+        <item>Noticia Text</item>
+        <item>Noto Sans</item>
+        <item>Noto Serif</item>
+        <item>Nova Cut</item>
+        <item>Nova Flat</item>
+        <item>Nova Mono</item>
+        <item>Nova Oval</item>
+        <item>Nova Round</item>
+        <item>Nova Script</item>
+        <item>Nova Slim</item>
+        <item>Nova Square</item>
+        <item>Numans</item>
+        <item>Nunito</item>
+        <item>Nunito Sans</item>
+        <item>Odor Mean Chey</item>
+        <item>Offside</item>
+        <item>Old Standard TT</item>
+        <item>Oldenburg</item>
+        <item>Oleo Script</item>
+        <item>Oleo Script Swash Caps</item>
+        <item>Open Sans</item>
+        <item>Open Sans Condensed</item>
+        <item>Oranienbaum</item>
+        <item>Orbitron</item>
+        <item>Oregano</item>
+        <item>Orienta</item>
+        <item>Original Surfer</item>
+        <item>Oswald</item>
+        <item>Over the Rainbow</item>
+        <item>Overlock</item>
+        <item>Overlock SC</item>
+        <item>Overpass</item>
+        <item>Overpass Mono</item>
+        <item>Ovo</item>
+        <item>Oxygen</item>
+        <item>Oxygen Mono</item>
+        <item>PT Mono</item>
+        <item>PT Sans</item>
+        <item>PT Sans Caption</item>
+        <item>PT Sans Narrow</item>
+        <item>PT Serif</item>
+        <item>PT Serif Caption</item>
+        <item>Pacifico</item>
+        <item>Padauk</item>
+        <item>Palanquin</item>
+        <item>Palanquin Dark</item>
+        <item>Pangolin</item>
+        <item>Paprika</item>
+        <item>Parisienne</item>
+        <item>Passero One</item>
+        <item>Passion One</item>
+        <item>Pathway Gothic One</item>
+        <item>Patrick Hand</item>
+        <item>Patrick Hand SC</item>
+        <item>Pattaya</item>
+        <item>Patua One</item>
+        <item>Pavanam</item>
+        <item>Paytone One</item>
+        <item>Peddana</item>
+        <item>Peralta</item>
+        <item>Permanent Marker</item>
+        <item>Petit Formal Script</item>
+        <item>Petrona</item>
+        <item>Philosopher</item>
+        <item>Piedra</item>
+        <item>Pinyon Script</item>
+        <item>Pirata One</item>
+        <item>Plaster</item>
+        <item>Play</item>
+        <item>Playball</item>
+        <item>Playfair Display</item>
+        <item>Playfair Display SC</item>
+        <item>Podkova</item>
+        <item>Poiret One</item>
+        <item>Poller One</item>
+        <item>Poly</item>
+        <item>Pompiere</item>
+        <item>Pontano Sans</item>
+        <item>Poppins</item>
+        <item>Port Lligat Sans</item>
+        <item>Port Lligat Slab</item>
+        <item>Pragati Narrow</item>
+        <item>Prata</item>
+        <item>Preahvihear</item>
+        <item>Press Start 2P</item>
+        <item>Pridi</item>
+        <item>Princess Sofia</item>
+        <item>Prociono</item>
+        <item>Prompt</item>
+        <item>Prosto One</item>
+        <item>Proza Libre</item>
+        <item>Puritan</item>
+        <item>Purple Purse</item>
+        <item>Quando</item>
+        <item>Quantico</item>
+        <item>Quattrocento</item>
+        <item>Quattrocento Sans</item>
+        <item>Questrial</item>
+        <item>Quicksand</item>
+        <item>Quintessential</item>
+        <item>Qwigley</item>
+        <item>Racing Sans One</item>
+        <item>Radley</item>
+        <item>Rajdhani</item>
+        <item>Rakkas</item>
+        <item>Raleway</item>
+        <item>Raleway Dots</item>
+        <item>Ramabhadra</item>
+        <item>Ramaraja</item>
+        <item>Rambla</item>
+        <item>Rammetto One</item>
+        <item>Ranchers</item>
+        <item>Rancho</item>
+        <item>Ranga</item>
+        <item>Rasa</item>
+        <item>Rationale</item>
+        <item>Ravi Prakash</item>
+        <item>Redressed</item>
+        <item>Reem Kufi</item>
+        <item>Reenie Beanie</item>
+        <item>Revalia</item>
+        <item>Rhodium Libre</item>
+        <item>Ribeye</item>
+        <item>Ribeye Marrow</item>
+        <item>Righteous</item>
+        <item>Risque</item>
+        <item>Roboto</item>
+        <item>Roboto Condensed</item>
+        <item>Roboto Mono</item>
+        <item>Roboto Slab</item>
+        <item>Rochester</item>
+        <item>Rock Salt</item>
+        <item>Rokkitt</item>
+        <item>Romanesco</item>
+        <item>Ropa Sans</item>
+        <item>Rosario</item>
+        <item>Rosarivo</item>
+        <item>Rouge Script</item>
+        <item>Rozha One</item>
+        <item>Rubik</item>
+        <item>Rubik Mono One</item>
+        <item>Ruda</item>
+        <item>Rufina</item>
+        <item>Ruge Boogie</item>
+        <item>Ruluko</item>
+        <item>Rum Raisin</item>
+        <item>Ruslan Display</item>
+        <item>Russo One</item>
+        <item>Ruthie</item>
+        <item>Rye</item>
+        <item>Sacramento</item>
+        <item>Sahitya</item>
+        <item>Sail</item>
+        <item>Salsa</item>
+        <item>Sanchez</item>
+        <item>Sancreek</item>
+        <item>Sansita</item>
+        <item>Sarala</item>
+        <item>Sarina</item>
+        <item>Sarpanch</item>
+        <item>Satisfy</item>
+        <item>Scada</item>
+        <item>Scheherazade</item>
+        <item>Schoolbell</item>
+        <item>Scope One</item>
+        <item>Seaweed Script</item>
+        <item>Secular One</item>
+        <item>Sevillana</item>
+        <item>Seymour One</item>
+        <item>Shadows Into Light</item>
+        <item>Shadows Into Light Two</item>
+        <item>Shanti</item>
+        <item>Share</item>
+        <item>Share Tech</item>
+        <item>Share Tech Mono</item>
+        <item>Shojumaru</item>
+        <item>Short Stack</item>
+        <item>Shrikhand</item>
+        <item>Siemreap</item>
+        <item>Sigmar One</item>
+        <item>Signika</item>
+        <item>Signika Negative</item>
+        <item>Simonetta</item>
+        <item>Sintony</item>
+        <item>Sirin Stencil</item>
+        <item>Six Caps</item>
+        <item>Skranji</item>
+        <item>Slabo 13px</item>
+        <item>Slabo 27px</item>
+        <item>Slackey</item>
+        <item>Smokum</item>
+        <item>Smythe</item>
+        <item>Sniglet</item>
+        <item>Snippet</item>
+        <item>Snowburst One</item>
+        <item>Sofadi One</item>
+        <item>Sofia</item>
+        <item>Sonsie One</item>
+        <item>Sorts Mill Goudy</item>
+        <item>Source Code Pro</item>
+        <item>Source Sans Pro</item>
+        <item>Source Serif Pro</item>
+        <item>Space Mono</item>
+        <item>Special Elite</item>
+        <item>Spicy Rice</item>
+        <item>Spinnaker</item>
+        <item>Spirax</item>
+        <item>Squada One</item>
+        <item>Sree Krushnadevaraya</item>
+        <item>Sriracha</item>
+        <item>Stalemate</item>
+        <item>Stalinist One</item>
+        <item>Stardos Stencil</item>
+        <item>Stint Ultra Condensed</item>
+        <item>Stint Ultra Expanded</item>
+        <item>Stoke</item>
+        <item>Strait</item>
+        <item>Sue Ellen Francisco</item>
+        <item>Suez One</item>
+        <item>Sumana</item>
+        <item>Sunshiney</item>
+        <item>Supermercado One</item>
+        <item>Sura</item>
+        <item>Suranna</item>
+        <item>Suravaram</item>
+        <item>Suwannaphum</item>
+        <item>Swanky and Moo Moo</item>
+        <item>Syncopate</item>
+        <item>Tangerine</item>
+        <item>Taprom</item>
+        <item>Tauri</item>
+        <item>Taviraj</item>
+        <item>Teko</item>
+        <item>Telex</item>
+        <item>Tenali Ramakrishna</item>
+        <item>Tenor Sans</item>
+        <item>Text Me One</item>
+        <item>The Girl Next Door</item>
+        <item>Tienne</item>
+        <item>Tillana</item>
+        <item>Timmana</item>
+        <item>Tinos</item>
+        <item>Titan One</item>
+        <item>Titillium Web</item>
+        <item>Trade Winds</item>
+        <item>Trirong</item>
+        <item>Trocchi</item>
+        <item>Trochut</item>
+        <item>Trykker</item>
+        <item>Tulpen One</item>
+        <item>Ubuntu</item>
+        <item>Ubuntu Condensed</item>
+        <item>Ubuntu Mono</item>
+        <item>Ultra</item>
+        <item>Uncial Antiqua</item>
+        <item>Underdog</item>
+        <item>Unica One</item>
+        <item>UnifrakturCook</item>
+        <item>UnifrakturMaguntia</item>
+        <item>Unkempt</item>
+        <item>Unlock</item>
+        <item>Unna</item>
+        <item>VT323</item>
+        <item>Vampiro One</item>
+        <item>Varela</item>
+        <item>Varela Round</item>
+        <item>Vast Shadow</item>
+        <item>Vesper Libre</item>
+        <item>Vibur</item>
+        <item>Vidaloka</item>
+        <item>Viga</item>
+        <item>Voces</item>
+        <item>Volkhov</item>
+        <item>Vollkorn</item>
+        <item>Voltaire</item>
+        <item>Waiting for the Sunrise</item>
+        <item>Wallpoet</item>
+        <item>Walter Turncoat</item>
+        <item>Warnes</item>
+        <item>Wellfleet</item>
+        <item>Wendy One</item>
+        <item>Wire One</item>
+        <item>Work Sans</item>
+        <item>Yanone Kaffeesatz</item>
+        <item>Yantramanav</item>
+        <item>Yatra One</item>
+        <item>Yellowtail</item>
+        <item>Yeseva One</item>
+        <item>Yesteryear</item>
+        <item>Yrsa</item>
+        <item>Zeyada</item>
+    </string-array>
+</resources>
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/values/font_certs.xml b/ui/fonts/DownloadableFonts/app/src/main/res/values/font_certs.xml
new file mode 100644
index 00000000..a09ad32f
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/values/font_certs.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright 2017 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>
+    <array name="com_google_android_gms_fonts_certs">
+        <item>@array/com_google_android_gms_fonts_certs_dev</item>
+        <item>@array/com_google_android_gms_fonts_certs_prod</item>
+    </array>
+    <string-array name="com_google_android_gms_fonts_certs_dev">
+        <item>
+            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
+        </item>
+    </string-array>
+    <string-array name="com_google_android_gms_fonts_certs_prod">
+        <item>
+            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
+        </item>
+    </string-array>
+</resources>
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/values/preloaded_fonts.xml b/ui/fonts/DownloadableFonts/app/src/main/res/values/preloaded_fonts.xml
new file mode 100644
index 00000000..df301f60
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/values/preloaded_fonts.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright 2017 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>
+    <array name="preloaded_fonts" translatable="false">
+        <item>@font/lobster_two</item>
+    </array>
+</resources>
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/values/strings.xml b/ui/fonts/DownloadableFonts/app/src/main/res/values/strings.xml
new file mode 100644
index 00000000..1eed5534
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/values/strings.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2017 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>
+    <string name="app_name">Downloadable fonts sample</string>
+    <string name="request">request</string>
+    <string name="invalid_family_name">Not a valid Family Name</string>
+    <string name="invalid_input">Invalid inputs exist</string>
+    <string name="family_name">Family Name</string>
+    <string name="weight">Weight</string>
+    <string name="width">Width</string>
+    <string name="italic">Italic</string>
+    <string name="best_effort">Best Effort (Nearest match)</string>
+    <string name="predefined_font">The pre-downloaded font is used for this part to avoid the overhead of the time until the requested font is downloaded. See "src/main/res/font" directory for usage.</string>
+    <string name="downloadable_font_applied_text">Typeface of this part is going to be changed when a new font is downloaded. To request a new font, fill the \"Family Name\" (and optionally change other attributes such as width, weight, italic), then tap the \"Request\" button</string>
+    <string name="request_failed">Font request failed with reason code: %1$d</string>
+</resources>
diff --git a/ui/fonts/DownloadableFonts/app/src/main/res/values/styles.xml b/ui/fonts/DownloadableFonts/app/src/main/res/values/styles.xml
new file mode 100644
index 00000000..9ba54f26
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/app/src/main/res/values/styles.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?><!-- Copyright (C) 2017 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>
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+        <!-- Customize your theme here. -->
+        <item name="colorPrimary">@color/primary</item>
+        <item name="colorPrimaryDark">@color/primary_dark</item>
+        <item name="colorAccent">@color/accent</item>
+    </style>
+</resources>
diff --git a/ui/fonts/DownloadableFonts/build.gradle b/ui/fonts/DownloadableFonts/build.gradle
new file mode 100644
index 00000000..5c0aed84
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/build.gradle
@@ -0,0 +1,26 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        jcenter()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:2.4.0-dev'
+    }
+}
+
+allprojects {
+    repositories {
+        jcenter()
+    }
+}
+
+// BEGIN_EXCLUDE
+import com.example.android.samples.build.SampleGenPlugin
+apply plugin: SampleGenPlugin
+
+samplegen {
+  pathToBuild "../../../../../build"
+  pathToSamplesCommon "../../../common"
+}
+apply from: "../../../../../build/build.gradle"
+// END_EXCLUDE
diff --git a/ui/fonts/DownloadableFonts/buildSrc/build.gradle b/ui/fonts/DownloadableFonts/buildSrc/build.gradle
new file mode 100644
index 00000000..7cebf71c
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/buildSrc/build.gradle
@@ -0,0 +1,15 @@
+repositories {
+    mavenCentral()
+}
+dependencies {
+    compile 'org.freemarker:freemarker:2.3.20'
+}
+
+sourceSets {
+    main {
+        groovy {
+            srcDir new File(rootDir, "../../../../../../build/buildSrc/src/main/groovy")
+        }
+    }
+}
+
diff --git a/ui/fonts/DownloadableFonts/gradle/wrapper/gradle-wrapper.jar b/ui/fonts/DownloadableFonts/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..13372aef
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/gradle/wrapper/gradle-wrapper.jar
diff --git a/ui/fonts/DownloadableFonts/gradle/wrapper/gradle-wrapper.properties b/ui/fonts/DownloadableFonts/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..9eaab7c2
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Wed May 10 17:45:17 JST 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+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/fonts/DownloadableFonts/gradlew b/ui/fonts/DownloadableFonts/gradlew
new file mode 100755
index 00000000..9d82f789
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/gradlew
@@ -0,0 +1,160 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=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.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+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`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    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=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
diff --git a/ui/fonts/DownloadableFonts/gradlew.bat b/ui/fonts/DownloadableFonts/gradlew.bat
new file mode 100644
index 00000000..aec99730
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/gradlew.bat
@@ -0,0 +1,90 @@
+@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

diff --git a/ui/fonts/DownloadableFonts/screenshots/icon-web.png b/ui/fonts/DownloadableFonts/screenshots/icon-web.png
new file mode 100644
index 00000000..31629a96
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/screenshots/icon-web.png
diff --git a/ui/fonts/DownloadableFonts/screenshots/screenshot-1.png b/ui/fonts/DownloadableFonts/screenshots/screenshot-1.png
new file mode 100644
index 00000000..05649a5c
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/screenshots/screenshot-1.png
diff --git a/ui/fonts/DownloadableFonts/screenshots/screenshot-2.png b/ui/fonts/DownloadableFonts/screenshots/screenshot-2.png
new file mode 100644
index 00000000..ed423814
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/screenshots/screenshot-2.png
diff --git a/ui/fonts/DownloadableFonts/screenshots/screenshot-3.png b/ui/fonts/DownloadableFonts/screenshots/screenshot-3.png
new file mode 100644
index 00000000..31629a96
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/screenshots/screenshot-3.png
diff --git a/ui/fonts/DownloadableFonts/settings.gradle b/ui/fonts/DownloadableFonts/settings.gradle
new file mode 100644
index 00000000..e7b4def4
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/settings.gradle
@@ -0,0 +1 @@
+include ':app'
diff --git a/ui/fonts/DownloadableFonts/template-params.xml b/ui/fonts/DownloadableFonts/template-params.xml
new file mode 100644
index 00000000..8215ce04
--- /dev/null
+++ b/ui/fonts/DownloadableFonts/template-params.xml
@@ -0,0 +1,144 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2017 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.
+-->
+<sample>
+    <name>DownloadableFonts</name>
+    <group>UI</group>
+    <package>com.example.android.downloadablefonts</package>
+
+    <!--
+        Lower the minSdk once the API level for O is changed to 26.
+        At this moment, an app targeting "O" only runs on O preview devices.
+    -->
+    <minSdk>"O"</minSdk>
+
+    <strings>
+        <intro>
+<![CDATA[
+This sample demonstrates how to use the Downloadable Fonts feature introduced in Android O.
+Downloadable Fonts is a feature that allows apps to request a certain font from a provider
+instead of bundling it or downloading it themselves. This means, there is no need to bundle the
+font as an asset.
+
+Note that the sample uses Google Play Services as a font provider, which requires pre-released
+version of Google Play Services.
+You can sign up for the beta program so that the beta version of Google Play Services is
+downloaded to your device. https://developers.google.com/android/guides/beta-program
+If you have Google Play Services whose version number is equal or above 11.x.x, that means you
+have the compatible version installed. (You can confirm by navigating to
+Settings -> Apps -> Google Play Services)
+]]>
+        </intro>
+    </strings>
+
+    <template src="base-build" />
+
+    <metadata>
+        <status>DRAFTED</status>
+        <categories>UI, Android O Preview</categories>
+        <technologies>Android</technologies>
+        <languages>Java</languages>
+        <solutions>Mobile</solutions>
+        <level>INTERMEDIATE</level>
+        <icon>screenshots/icon-web.png</icon>
+        <screenshots>
+            <img>screenshots/screenshot-1.png</img>
+        </screenshots>
+        <api_refs>
+            <android>android.provider.FontRequest</android>
+            <android>android.support.v4.provider.FontRequest</android>
+            <android>android.provider.FontsContractCompat</android>
+            <android>android.support.v4.provider.FontsContractCompat</android>
+        </api_refs>
+
+        <description>
+<![CDATA[
+This sample demonstrates how to use the Downloadable Fonts feature introduced in Android O.
+Downloadable Fonts is a feature that allows apps to request a certain font from a provider
+instead of bundling it or downloading it themselves. This means, there is no need to bundle the
+font as an asset.
+]]>
+        </description>
+
+        <intro>
+<![CDATA[
+There are two ways of requesting a font to download.
+To request a font to download from Java code, you need to create a [FontRequest][1] class first like
+this:
+```java
+FontRequest request = new FontRequest(
+    "com.google.android.gms.fonts", // ProviderAuthority
+    "com.google.android.gms",  // ProviderPackage
+    query,  // Query
+    R.array.com_google_android_gms_fonts_certs); // Certificates
+```
+The parameters `ProviderAuthority`, `ProviderPackage` are given by a font provider, in the case
+above uses Google Play Services as a font provider.
+The third parameter is a query string about the requested font. The syntax of the query is defined
+by the font provider.
+
+Then pass the request instance to the `requestFont` method in the [FontsContractCompat][2].
+```java
+FontsContractCompat.requestFont(context, request, callback, handler);
+```
+The downloaded font or an error code if the request failed will be passed to the callback.
+The example above assumes you are using the classes from the support library. There are
+corresponding classes in the framework, but the feature is available back to API level 14 if you
+use the support library.
+
+You can declare a downloaded font in an XML file and let the system download it for you and use it
+in layouts.
+```xml
+<font-family xmlns:app="http://schemas.android.com/apk/res-auto"
+        app:fontProviderAuthority="com.google.android.gms.fonts"
+        app:fontProviderPackage="com.google.android.gms"
+        app:fontProviderQuery="Lobster Two"
+        app:fontProviderCerts="@array/com_google_android_gms_fonts_certs">
+</font-family>
+```
+By defining the requested font in an XML file and putting the `preloaded_fonts` array and the
+meta-data tag in the AndroidManifest, you can avoid the delay until the font is downloaded by the
+first attempt.
+```xml
+<resources>
+    <array name="preloaded_fonts" translatable="false">
+        <item>@font/lobster_two</item>
+    </array>
+</resources>
+```
+
+```xml
+<application >
+    ...
+    <meta-data android:name="preloaded_fonts" android:resource="@array/preloaded_fonts" />
+    ...
+</application>
+```
+
+Note that the sample uses Google Play Services as a font provider, which requires pre-released
+version of Google Play Services.
+You can sign up for the beta program so that the beta version of Google Play Services is
+downloaded to your device. https://developers.google.com/android/guides/beta-program
+If you have Google Play Services whose version number is equal or above 11.x.x, that means you
+have the compatible version installed. (You can confirm by navigating to
+Settings -> Apps -> Google Play Services)
+
+[1]: https://developer.android.com/reference/android/support/v4/provider/FontRequest.html
+[2]: https://developer.android.com/reference/android/support/v4/provider/FontsContractCompat.html
+]]>
+        </intro>
+    </metadata>
+</sample>