Add new activity for picking live wallpapers.

AndroidManifest.xml

@@ -559,6 +559,17 @@
                 android:permission="android.permission.BIND_APPWIDGET"
                 android:theme="@android:style/Theme.NoDisplay" android:exported="true" />
 
+        <!-- Standard picker for live wallpapers -->
+        <activity android:name="LiveWallpaperPickActivity"
+                android:label="@string/live_wallpaper_picker_title"
+                android:theme="@*android:style/Theme.Dialog.Alert">
+            <intent-filter>
+                <action android:name="android.service.wallpaper.LIVE_WALLPAPER_CHOOSER" />
+                <action android:name="android.intent.action.SET_WALLPAPER" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+        </activity>
+
         <activity android:name="UsageStats" android:label="@string/usage_stats_label">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

res/values/strings.xml

@@ -1523,11 +1523,16 @@ found in the list of installed applications.</string>
          (or other screens that can host gadgets).  Note to translators: we're still determining
          the final name for Gadgets/Widgets, so please translate both for now. -->
     <string name="gadget_picker_title">Choose gadget</string>
+    
     <!-- Title for the screen that lets the user choose a widget to add to the home screen
          (or other screens that can host widgets).  Note to translators: we're still determining
          the final name for Gadgets/Widgets, so please translate both for now. -->
     <string name="widget_picker_title">Choose widget</string>
 
+    <!-- Title for the screen that lets the user choose a live wallpaper to use
+         for the system. -->
+    <string name="live_wallpaper_picker_title">Live wallpaper</string>
+
     <!-- Used to display "Details for UID 1234" in BatteryHistory -->
     <string name="battery_history_details_for">Details for UID %d</string>
 

src/com/android/settings/LiveWallpaperPickActivity.java

@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2009 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.settings;
+
+import android.app.WallpaperManager;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.content.pm.ServiceInfo;
+import android.graphics.drawable.Drawable;
+import android.os.Bundle;
+import android.os.RemoteException;
+import android.service.wallpaper.WallpaperService;
+import android.util.Log;
+
+import java.text.Collator;
+import java.util.List;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+
+/**
+ * Displays a list of live wallpapers, allowing the user to select one
+ * and make it the system global wallpaper.
+ */
+public class LiveWallpaperPickActivity extends ActivityPicker {
+    private static final String TAG = "LiveWallpaperPickActivity";
+    private static final boolean LOGD = false;
+
+    private PackageManager mPackageManager;
+    private WallpaperManager mWallpaperManager;
+    
+    @Override
+    public void onCreate(Bundle icicle) {
+        mPackageManager = getPackageManager();
+        mWallpaperManager = WallpaperManager.getInstance(this);
+        
+        super.onCreate(icicle);
+        
+        // Set default return data
+        setResult(RESULT_CANCELED);
+    }
+    
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void onClick(DialogInterface dialog, int which) {
+        Intent intent = getIntentForPosition(which);
+        try {
+            mWallpaperManager.getIWallpaperManager().setWallpaperComponent(
+                    intent.getComponent());
+            this.setResult(RESULT_OK);
+        } catch (RemoteException e) {
+            // do nothing
+        } catch (RuntimeException e) {
+            Log.w(TAG, "Failure setting wallpaper", e);
+        }
+        finish();
+    }
+
+    /**
+     * Create list entries for the given {@link AppWidgetProviderInfo} widgets,
+     * inserting extras if provided.
+     */
+    void putAppWidgetItems(List<ResolveInfo> ris,
+            List<PickAdapter.Item> items) {
+        final int size = ris.size();
+        for (int i = 0; i < size; i++) {
+            ServiceInfo si = ris.get(i).serviceInfo;
+            
+            CharSequence label = si.loadLabel(mPackageManager);
+            Drawable icon = si.loadIcon(mPackageManager);
+            
+            PickAdapter.Item item = new PickAdapter.Item(this, label, icon);
+            
+            item.packageName = si.packageName;
+            item.className = si.name;
+            
+            items.add(item);
+        }
+    }
+    
+    /**
+     * Build and return list of items to be shown in dialog. This will mix both
+     * installed {@link AppWidgetProviderInfo} and those provided through
+     * {@link AppWidgetManager#EXTRA_CUSTOM_INFO}, sorting them alphabetically.
+     */
+    @Override
+    protected List<PickAdapter.Item> getItems() {
+        List<PickAdapter.Item> items = new ArrayList<PickAdapter.Item>();
+        
+        putInstalledAppWidgets(items);
+        
+        // Sort all items together by label
+        Collections.sort(items, new Comparator<PickAdapter.Item>() {
+                Collator mCollator = Collator.getInstance();
+                public int compare(PickAdapter.Item lhs, PickAdapter.Item rhs) {
+                    return mCollator.compare(lhs.label, rhs.label);
+                }
+            });
+
+        return items;
+    }
+
+    /**
+     * Create list entries for installed {@link AppWidgetProviderInfo} widgets.
+     */
+    void putInstalledAppWidgets(List<PickAdapter.Item> items) {
+        List<ResolveInfo> ris = mPackageManager.queryIntentServices(
+                new Intent(WallpaperService.SERVICE_INTERFACE), 0);
+        putAppWidgetItems(ris, items);
+    }
+}