1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.launcher2; 18 19 import android.app.Application; 20 import android.content.ContentResolver; 21 import android.content.Intent; 22 import android.content.IntentFilter; 23 import android.database.ContentObserver; 24 import android.os.Handler; 25 import dalvik.system.VMRuntime; 26 27 public class LauncherApplication extends Application { 28 public LauncherModel mModel; 29 public IconCache mIconCache; 30 31 @Override onCreate()32 public void onCreate() { 33 VMRuntime.getRuntime().setMinimumHeapSize(4 * 1024 * 1024); 34 35 super.onCreate(); 36 37 mIconCache = new IconCache(this); 38 mModel = new LauncherModel(this, mIconCache); 39 40 // Register intent receivers 41 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 42 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 43 filter.addAction(Intent.ACTION_PACKAGE_CHANGED); 44 filter.addDataScheme("package"); 45 registerReceiver(mModel, filter); 46 filter = new IntentFilter(); 47 filter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE); 48 filter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE); 49 registerReceiver(mModel, filter); 50 51 // Register for changes to the favorites 52 ContentResolver resolver = getContentResolver(); 53 resolver.registerContentObserver(LauncherSettings.Favorites.CONTENT_URI, true, 54 mFavoritesObserver); 55 } 56 57 /** 58 * There's no guarantee that this function is ever called. 59 */ 60 @Override onTerminate()61 public void onTerminate() { 62 super.onTerminate(); 63 64 unregisterReceiver(mModel); 65 66 ContentResolver resolver = getContentResolver(); 67 resolver.unregisterContentObserver(mFavoritesObserver); 68 } 69 70 /** 71 * Receives notifications whenever the user favorites have changed. 72 */ 73 private final ContentObserver mFavoritesObserver = new ContentObserver(new Handler()) { 74 @Override 75 public void onChange(boolean selfChange) { 76 mModel.startLoader(LauncherApplication.this, false); 77 } 78 }; 79 setLauncher(Launcher launcher)80 LauncherModel setLauncher(Launcher launcher) { 81 mModel.initialize(launcher); 82 return mModel; 83 } 84 getIconCache()85 IconCache getIconCache() { 86 return mIconCache; 87 } 88 getModel()89 LauncherModel getModel() { 90 return mModel; 91 } 92 } 93