SlicePresenter -> SliceBrowser

Make it easier to handle when many slice uris are present, switch to more
of a search model where you enter an auto-completed content uri, move
mode selection to an action menu.

Change-Id: I431af2aa2178b98f3e2c3e1690559ecc7d7fe0b9

10 files changed, 395 insertions, 238 deletions

diff --git a/SlicePresenter/Android.mk b/SliceBrowser/Android.mk
index 19a5b74..578f7b1 100644
--- a/SlicePresenter/Android.mk
+++ b/SliceBrowser/Android.mk
@@ -16,9 +16,14 @@ LOCAL_PATH := $(call my-dir)
 
 include $(CLEAR_VARS)
 
+LOCAL_USE_AAPT2 := true
+
 LOCAL_PACKAGE_NAME := SlicePresenter
 LOCAL_SRC_FILES := $(call all-java-files-under, src) \
-	$(call all-Iaidl-files-under, src)
+    $(call all-Iaidl-files-under, src)
+
+LOCAL_STATIC_ANDROID_LIBRARIES := \
+    android-support-v7-cardview
 
 LOCAL_CERTIFICATE := platform
 
diff --git a/SlicePresenter/AndroidManifest.xml b/SliceBrowser/AndroidManifest.xml
index fff34b2..0e15bfd 100644
--- a/SlicePresenter/AndroidManifest.xml
+++ b/SliceBrowser/AndroidManifest.xml
@@ -24,7 +24,8 @@
     <uses-permission android:name="android.permission.BIND_SLICE" />
 
     <application android:label="@string/app_label">
-        <activity android:name=".SlicePresenter">
+        <activity android:name=".SlicePresenter"
+            android:theme="@android:style/Theme.DeviceDefault.Light.NoActionBar">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.DEFAULT" />
diff --git a/SliceBrowser/res/drawable/ic_large.xml b/SliceBrowser/res/drawable/ic_large.xml
new file mode 100644
index 0000000..b8042a8
--- /dev/null
+++ b/SliceBrowser/res/drawable/ic_large.xml
@@ -0,0 +1,28 @@
+<!--
+Copyright (C) 2014 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.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="48.0dp"
+        android:height="48.0dp"
+        android:viewportWidth="48.0"
+        android:viewportHeight="48.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M34.0,2.02L14.0,2.0c-2.21,0.0 -4.0,1.79 -4.0,4.0l0.0,36.0c0.0,2.21 1.79,4.0 4.0,4.0l20.0,0.0c2.21,0.0 4.0,-1.79 4.0,-4.0L38.0,6.0c0.0,-2.21 -1.79,-3.98 -4.0,-3.98zM34.0,38.0L14.0,38.0L14.0,10.0l20.0,0.0l0.0,28.0z"/>
+    <path
+        android:strokeColor="#FF000000"
+        android:strokeWidth="2"
+        android:pathData="M16,18 l16,0 l0,10 l-16,0z"/>
+</vector>
diff --git a/SliceBrowser/res/drawable/ic_shortcut.xml b/SliceBrowser/res/drawable/ic_shortcut.xml
new file mode 100644
index 0000000..4b5485d
--- /dev/null
+++ b/SliceBrowser/res/drawable/ic_shortcut.xml
@@ -0,0 +1,34 @@
+<!--
+Copyright (C) 2014 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.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="48.0dp"
+    android:viewportHeight="48.0"
+    android:viewportWidth="48.0"
+    android:width="48.0dp">
+    <path
+        android:fillColor="#e2e2e2"
+        android:pathData="M24.0,24.0m-19.0,0.0a19.0,19.0 0.0,1.0 1.0,38.0 0.0a19.0,19.0 0.0,1.0 1.0,-38.0 0.0"/>
+    <group
+        android:scaleX=".7"
+        android:scaleY=".7"
+        android:translateX="7.2"
+        android:translateY="7.2">
+
+        <path
+            android:fillColor="#ff000000"
+            android:pathData="M12.0,36.0c0.0,1.0 0.9,2.0 2.0,2.0l2.0,0.0l0.0,7.0c0.0,1.66 1.34,3.0 3.0,3.0s3.0,-1.34 3.0,-3.0l0.0,-7.0l4.0,0.0l0.0,7.0c0.0,1.66 1.34,3.0 3.0,3.0s3.0,-1.34 3.0,-3.0l0.0,-7.0l2.0,0.0c1.1,0.0 2.0,-0.9 2.0,-2.0L36.0,16.0L12.0,16.0l0.0,20.0zM7.0,16.0c-1.66,0.0 -3.0,1.34 -3.0,3.0l0.0,14.0c0.0,1.66 1.34,3.0 3.0,3.0s3.0,-1.34 3.0,-3.0L10.0,19.0c0.0,-1.66 -1.34,-3.0 -3.0,-3.0zm34.0,0.0c-1.66,0.0 -3.0,1.34 -3.0,3.0l0.0,14.0c0.0,1.66 1.34,3.0 3.0,3.0s3.0,-1.34 3.0,-3.0L44.0,19.0c0.0,-1.66 -1.34,-3.0 -3.0,-3.0zM31.06,4.32l2.61,-2.61c0.39,-0.3 0.39,-1.02 0.0,-1.41 -0.39,-0.39 -1.02,-0.39 -1.41,0.0L29.3,3.25C27.7,2.46 25.91,2.0 24.0,2.0c-1.92,0.0 -3.7,0.46 -5.33,1.26L15.0,0.29c-0.39,-0.39 -1.02,-0.39 -1.41,0.0 -0.3,0.39 -0.39,1.02 0.0,1.41l2.62,2.62C13.94,6.51 12.0,10.03 12.0,14.0l24.0,0.0c0.0,-3.98 -1.95,-7.5 -4.94,-9.68zM20.0,10.0l-2.0,0.0L18.0,8.0l2.0,0.0l0.0,2.0zm10.0,0.0l-2.0,0.0L28.0,8.0l2.0,0.0l0.0,2.0z"/>
+    </group>
+</vector>
diff --git a/SliceBrowser/res/drawable/ic_small.xml b/SliceBrowser/res/drawable/ic_small.xml
new file mode 100644
index 0000000..b35e1c1
--- /dev/null
+++ b/SliceBrowser/res/drawable/ic_small.xml
@@ -0,0 +1,27 @@
+<!--
+Copyright (C) 2014 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.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="48.0dp"
+        android:height="48.0dp"
+        android:viewportWidth="48.0"
+        android:viewportHeight="48.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M34.0,2.02L14.0,2.0c-2.21,0.0 -4.0,1.79 -4.0,4.0l0.0,36.0c0.0,2.21 1.79,4.0 4.0,4.0l20.0,0.0c2.21,0.0 4.0,-1.79 4.0,-4.0L38.0,6.0c0.0,-2.21 -1.79,-3.98 -4.0,-3.98zM34.0,38.0L14.0,38.0L14.0,10.0l20.0,0.0l0.0,28.0z"/>
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M16,18 l16,0 l0,4 l-16,0z"/>
+</vector>
diff --git a/SliceBrowser/res/layout/activity_layout.xml b/SliceBrowser/res/layout/activity_layout.xml
new file mode 100644
index 0000000..833414c
--- /dev/null
+++ b/SliceBrowser/res/layout/activity_layout.xml
@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2014 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.
+-->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:gravity="top"
+    android:orientation="vertical" >
+
+    <FrameLayout
+        android:id="@+id/search_bar_container"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="#f2f2f2">
+        <android.support.v7.widget.CardView
+            android:id="@+id/search_bar"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_margin="8dp"
+            app:cardCornerRadius="2dp"
+            app:cardBackgroundColor="?android:attr/colorBackground"
+            app:cardElevation="2dp">
+            <Toolbar
+                android:id="@+id/search_toolbar"
+                android:layout_width="match_parent"
+                android:layout_height="48dp"
+                android:background="?android:attr/selectableItemBackground"
+                android:contentInsetStart="0dp"
+                android:contentInsetStartWithNavigation="0dp"
+                android:theme="?android:attr/actionBarTheme">
+                <SearchView
+                    android:id="@+id/search_view"
+                    android:layout_width="match_parent"
+                    android:layout_height="match_parent"
+                    android:iconifiedByDefault="false"
+                    android:imeOptions="actionSearch|flagNoExtractUi"
+                    android:queryHint="content://..."
+                    android:searchIcon="@null"/>
+            </Toolbar>
+        </android.support.v7.widget.CardView>
+    </FrameLayout>
+
+
+    <ScrollView
+        android:id="@+id/container"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1" >
+
+        <FrameLayout
+            android:id="@+id/slice_preview"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_margin="8dp"
+            android:orientation="vertical"
+            android:background="?android:attr/colorBackground"
+            android:elevation="10dp" />
+    </ScrollView>
+
+</LinearLayout>
diff --git a/SlicePresenter/res/values/strings.xml b/SliceBrowser/res/values/strings.xml
index baf6e3a..3b5c795 100644
--- a/SlicePresenter/res/values/strings.xml
+++ b/SliceBrowser/res/values/strings.xml
@@ -14,7 +14,7 @@
      limitations under the License.
 -->
 <resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
-    <string name="app_label">Slice Presenter</string>
+    <string name="app_label">Slice Browser</string>
 
     <string name="intent_button">Use Intent Slice</string>
     <string name="uri_button">Use URI Slice</string>
diff --git a/SliceBrowser/src/com/android/experimental/slicepresenter/SlicePresenter.java b/SliceBrowser/src/com/android/experimental/slicepresenter/SlicePresenter.java
new file mode 100644
index 0000000..6b8a90e
--- /dev/null
+++ b/SliceBrowser/src/com/android/experimental/slicepresenter/SlicePresenter.java
@@ -0,0 +1,222 @@
+/*
+ * 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.android.experimental.slicepresenter;
+
+import android.app.Activity;
+import android.app.slice.Slice;
+import android.app.slice.widget.SliceView;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ActivityInfo;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.database.Cursor;
+import android.database.MatrixCursor;
+import android.net.Uri;
+import android.os.Bundle;
+import android.provider.BaseColumns;
+import android.util.ArrayMap;
+import android.util.Log;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.SubMenu;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.AdapterView.OnItemSelectedListener;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.CursorAdapter;
+import android.widget.LinearLayout;
+import android.widget.SearchView;
+import android.widget.SearchView.OnSuggestionListener;
+import android.widget.SimpleCursorAdapter;
+import android.widget.Spinner;
+import android.widget.Toolbar;
+
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
+
+public class SlicePresenter extends Activity {
+
+    private static final String TAG = "SlicePresenter";
+
+    private static final String SLICE_METADATA_KEY = "android.metadata.SLICE_URI";
+
+    private ArrayList<Uri> mSliceUris = new ArrayList<Uri>();
+    private String mSelectedMode;
+    private ViewGroup mContainer;
+    private boolean mShowingIntentSlice;
+    private SearchView mSearchView;
+    private SimpleCursorAdapter mAdapter;
+    private SubMenu mTypeMenu;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_layout);
+
+        Toolbar toolbar = findViewById(R.id.search_toolbar);
+        setActionBar(toolbar);
+
+        // Shows the slice
+        mContainer = findViewById(R.id.slice_preview);
+        mSearchView = findViewById(R.id.search_view);
+
+        final String[] from = new String[]{"uri"};
+        final int[] to = new int[]{android.R.id.text1};
+        mAdapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_1,
+                null, from, to, CursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER);
+        mSearchView.setSuggestionsAdapter(mAdapter);
+        mSearchView.setIconifiedByDefault(false);
+        mSearchView.setOnSuggestionListener(new SearchView.OnSuggestionListener() {
+            @Override
+            public boolean onSuggestionClick(int position) {
+                mSearchView.setQuery(((Cursor) mAdapter.getItem(position)).getString(1), true);
+                return true;
+            }
+
+            @Override
+            public boolean onSuggestionSelect(int position) {
+                mSearchView.setQuery(((Cursor) mAdapter.getItem(position)).getString(1), true);
+                return true;
+            }
+        });
+        mSearchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
+            @Override
+            public boolean onQueryTextSubmit(String s) {
+                addSlice(Uri.parse(s));
+                mSearchView.clearFocus();
+                return false;
+            }
+
+            @Override
+            public boolean onQueryTextChange(String s) {
+                populateAdapter(s);
+                return false;
+            }
+        });
+
+        mSelectedMode = (savedInstanceState != null)
+                ? savedInstanceState.getString("SELECTED_MODE", SliceView.MODE_SHORTCUT)
+                : SliceView.MODE_SHORTCUT;
+        if (savedInstanceState != null) {
+            mSearchView.setQuery(savedInstanceState.getString("SELECTED_QUERY"), true);
+        }
+
+        // TODO: Listen for changes.
+        updateAvailableSlices();
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        mTypeMenu = menu.addSubMenu("Type");
+        mTypeMenu.setIcon(R.drawable.ic_shortcut);
+        mTypeMenu.getItem().setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
+        mTypeMenu.add("Shortcut");
+        mTypeMenu.add("Small");
+        mTypeMenu.add("Large");
+        super.onCreateOptionsMenu(menu);
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getTitle().toString()) {
+            case "Shortcut":
+                mTypeMenu.setIcon(R.drawable.ic_shortcut);
+                mSelectedMode = SliceView.MODE_SHORTCUT;
+                updateSliceModes();
+                return true;
+            case "Small":
+                mTypeMenu.setIcon(R.drawable.ic_small);
+                mSelectedMode = SliceView.MODE_SMALL;
+                updateSliceModes();
+                return true;
+            case "Large":
+                mTypeMenu.setIcon(R.drawable.ic_large);
+                mSelectedMode = SliceView.MODE_LARGE;
+                updateSliceModes();
+                return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+
+    @Override
+    protected void onSaveInstanceState(Bundle outState) {
+        outState.putString("SELECTED_MODE", mSelectedMode);
+        outState.putString("SELECTED_QUERY", mSearchView.getQuery().toString());
+    }
+
+    private void updateAvailableSlices() {
+        mSliceUris.clear();
+        List<PackageInfo> packageInfos = getPackageManager()
+                .getInstalledPackages(PackageManager.GET_ACTIVITIES | PackageManager.GET_META_DATA);
+        for (PackageInfo pi : packageInfos) {
+            ActivityInfo[] activityInfos = pi.activities;
+            if (activityInfos != null) {
+                for (ActivityInfo ai : activityInfos) {
+                    if (ai.metaData != null) {
+                        String sliceUri = ai.metaData.getString(SLICE_METADATA_KEY);
+                        if (sliceUri != null) {
+                            mSliceUris.add(Uri.parse(sliceUri));
+                        }
+                    }
+                }
+            }
+        }
+        populateAdapter(String.valueOf(mSearchView.getQuery()));
+    }
+
+    private void addSlice(Uri uri) {
+        if (ContentResolver.SCHEME_CONTENT.equals(uri.getScheme())) {
+            SliceView v = new SliceView(getApplicationContext());
+            v.setTag(uri);
+            mContainer.removeAllViews();
+            mContainer.addView(v);
+            v.setMode(mSelectedMode);
+            v.setSlice(uri);
+        } else {
+            Log.w(TAG, "Invalid uri, skipping slice: " + uri);
+        }
+    }
+
+    private void updateSliceModes() {
+        final int count = mContainer.getChildCount();
+        for (int i = 0; i < count; i++) {
+            ((SliceView) mContainer.getChildAt(i)).setMode(mSelectedMode);
+        }
+    }
+
+    private void populateAdapter(String query) {
+        final MatrixCursor c = new MatrixCursor(new String[]{BaseColumns._ID, "uri"});
+        ArrayMap<String, Integer> ranking = new ArrayMap<>();
+        ArrayList<String> suggestions = new ArrayList();
+        mSliceUris.forEach(uri -> {
+            String uriString = uri.toString();
+            if (uriString.contains(query)) {
+                ranking.put(uriString, uriString.indexOf(query));
+                suggestions.add(uriString);
+            }
+        });
+        suggestions.sort(Comparator.comparingInt(ranking::get));
+        for (int i = 0; i < suggestions.size(); i++) {
+            c.addRow(new Object[]{i, suggestions.get(i)});
+        }
+        mAdapter.changeCursor(c);
+    }
+}
diff --git a/SlicePresenter/res/layout/activity_layout.xml b/SlicePresenter/res/layout/activity_layout.xml
deleted file mode 100644
index 98a838b..0000000
--- a/SlicePresenter/res/layout/activity_layout.xml
+++ /dev/null
@@ -1,59 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-     Copyright (C) 2014 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.
--->
-
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:gravity="top"
-    android:orientation="vertical" >
-
-    <ScrollView
-        android:id="@+id/container"
-        android:layout_width="match_parent"
-        android:layout_height="0dp"
-        android:layout_weight="1" >
-
-        <FrameLayout
-            android:id="@+id/slice_preview"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:orientation="vertical" />
-    </ScrollView>
-
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="0dp"
-        android:layout_gravity="bottom"
-        android:layout_margin="16dp"
-        android:layout_weight="0.25"
-        android:orientation="horizontal" >
-
-        <Spinner
-            android:id="@+id/spinner"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:padding="8dp" />
-
-        <Button
-            android:id="@+id/slice_button"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:padding="8dp"
-            android:text="@string/intent_button" />
-    </LinearLayout>
-
-</LinearLayout>
\ No newline at end of file
diff --git a/SlicePresenter/src/com/android/experimental/slicepresenter/SlicePresenter.java b/SlicePresenter/src/com/android/experimental/slicepresenter/SlicePresenter.java
deleted file mode 100644
index e6d6550..0000000
--- a/SlicePresenter/src/com/android/experimental/slicepresenter/SlicePresenter.java
+++ /dev/null
@@ -1,176 +0,0 @@
-/*
- * 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.android.experimental.slicepresenter;
-
-import android.app.Activity;
-import android.app.slice.Slice;
-import android.app.slice.widget.SliceView;
-import android.content.ContentResolver;
-import android.content.Context;
-import android.content.Intent;
-import android.content.pm.ActivityInfo;
-import android.content.pm.PackageInfo;
-import android.content.pm.PackageManager;
-import android.net.Uri;
-import android.os.Bundle;
-import android.util.Log;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.AdapterView;
-import android.widget.AdapterView.OnItemSelectedListener;
-import android.widget.ArrayAdapter;
-import android.widget.Button;
-import android.widget.LinearLayout;
-import android.widget.Spinner;
-
-import java.util.ArrayList;
-import java.util.List;
-
-public class SlicePresenter extends Activity {
-
-    private static final String TAG = "SlicePresenter";
-
-    private static final String SLICE_METADATA_KEY = "android.metadata.SLICE_URI";
-
-    private ArrayList<Uri> mSliceUris = new ArrayList<Uri>();
-    private String mSelectedMode;
-    private ViewGroup mContainer;
-    private boolean mShowingIntentSlice;
-
-    @Override
-    public void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_layout);
-
-        // Shows the slice
-        mContainer = (ViewGroup) findViewById(R.id.slice_preview);
-
-        // Select the slice mode
-        List<String> list = new ArrayList<>();
-        list.add(SliceView.MODE_SHORTCUT);
-        list.add(SliceView.MODE_SMALL);
-        list.add(SliceView.MODE_LARGE);
-        Spinner spinner = (Spinner) findViewById(R.id.spinner);
-        ArrayAdapter<String> adapter = new ArrayAdapter<>(this,
-                android.R.layout.simple_spinner_item, list);
-        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
-        spinner.setAdapter(adapter);
-        mSelectedMode = (savedInstanceState != null)
-                ? savedInstanceState.getString("SELECTED_MODE", list.get(0))
-                : list.get(0);
-        spinner.setSelection(list.indexOf(mSelectedMode));
-        spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
-            @Override
-            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
-                mSelectedMode = list.get(position);
-                updateSliceModes();
-            }
-
-            @Override
-            public void onNothingSelected(AdapterView<?> parent) {
-            }
-        });
-
-        // Toggle slice between URI based or Intent based
-        final String intentButton = getResources().getString(R.string.intent_button);
-        final String uriButton = getResources().getString(R.string.uri_button);
-        Button button = (Button) findViewById(R.id.slice_button);
-        button.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                final String state = (String) button.getText();
-                final String newState = state.equals(intentButton) ? uriButton : intentButton;
-                button.setText(newState);
-                mShowingIntentSlice = newState.equals(uriButton);
-                if (mShowingIntentSlice) {
-                    showIntentSlice();
-                } else {
-                    showAvailableSlices();
-                }
-            }
-        });
-    }
-
-    @Override
-    protected void onSaveInstanceState(Bundle outState) {
-        outState.putString("SELECTED_MODE", mSelectedMode);
-    }
-
-    @Override
-    public void onResume() {
-        super.onResume();
-        if (mShowingIntentSlice) {
-            showIntentSlice();
-        } else {
-            showAvailableSlices();
-        }
-    }
-
-    private void showAvailableSlices() {
-        mContainer.removeAllViews();
-        mSliceUris.clear();
-        List<PackageInfo> packageInfos = getPackageManager()
-                .getInstalledPackages(PackageManager.GET_ACTIVITIES | PackageManager.GET_META_DATA);
-        for (PackageInfo pi : packageInfos) {
-            ActivityInfo[] activityInfos = pi.activities;
-            if (activityInfos != null) {
-                for (ActivityInfo ai : activityInfos) {
-                    if (ai.metaData != null) {
-                        String sliceUri = ai.metaData.getString(SLICE_METADATA_KEY);
-                        if (sliceUri != null) {
-                            mSliceUris.add(Uri.parse(sliceUri));
-                        }
-                    }
-                }
-            }
-        }
-        for (int i = 0; i < mSliceUris.size(); i++) {
-            addSlice(mSliceUris.get(i));
-        }
-    }
-
-    private void addSlice(Uri uri) {
-        if (ContentResolver.SCHEME_CONTENT.equals(uri.getScheme())) {
-            SliceView v = new SliceView(getApplicationContext());
-            v.setTag(uri);
-            mContainer.addView(v);
-            v.setMode(mSelectedMode);
-            v.setSlice(uri);
-        } else {
-            Log.w(TAG, "Invalid uri, skipping slice: " + uri);
-        }
-    }
-
-    private void showIntentSlice() {
-        Intent intent = new Intent("android.intent.action.EXAMPLE_ACTION");
-        mContainer.removeAllViews();
-        SliceView v = new SliceView(getApplicationContext());
-        v.setTag(intent);
-        /*
-        boolean added = v.setSlice(intent);
-        if (added) {
-            mContainer.addView(v);
-            v.setMode(mSelectedMode);
-        }
-        */
-    }
-
-    private void updateSliceModes() {
-        final int count = mContainer.getChildCount();
-        for (int i = 0; i < count; i++) {
-            ((SliceView) mContainer.getChildAt(i)).setMode(mSelectedMode);
-        }
-    }
-}