Java tutorial
/* * Copyright (C) 2008 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.pekall.emdm.launcher; import android.app.Application; import android.content.*; import android.content.res.Configuration; import android.database.ContentObserver; import android.os.Handler; import android.support.v4.content.LocalBroadcastManager; // //import com.pekall.emdm.pcpchild.PcpConstants; //import com.pekall.emdm.pcpchild.PolicyDeployReceiver; import java.lang.ref.WeakReference; public class LauncherApplication extends Application { public LauncherModel mModel; public IconCache mIconCache; private static boolean sIsScreenLarge; private static float sScreenDensity; private static int sLongPressTimeout = 300; private static final String sSharedPreferencesKey = "com.android.launcher2.prefs"; WeakReference<LauncherProvider> mLauncherProvider; private static Context mContext; private static LauncherApplication mInstance; private LocalBroadcastManager mManager; /*public LauncherApplication(Context ctx){ super(ctx); mContext = ctx; mInstance = this; }*/ public static LauncherApplication getInstance() { return mInstance; } public static Context getmContext() { return mContext; } @Override public void onCreate() { super.onCreate(); mContext = this; mInstance = this; LauncherProvider.setLaucherProvier(); // set sIsScreenXLarge and sScreenDensity *before* creating icon cache sIsScreenLarge = mContext.getResources().getBoolean(R.bool.is_large_screen); sScreenDensity = mContext.getResources().getDisplayMetrics().density; mManager = LocalBroadcastManager.getInstance(mContext); mIconCache = new IconCache(mContext); mModel = new LauncherModel(mContext, mIconCache); // Register intent receivers /*IntentFilter filter = new IntentFilter(PolicyDeployReceiver.ACTION_POLICY_DEPLOY); // filter.addDataScheme("package"); // mContext.registerReceiver(mModel, filter); // mManager.registerReceiver(mModel, filter); // filter = new IntentFilter(); filter.addAction(Intent.ACTION_LOCALE_CHANGED); filter.addAction(Intent.ACTION_CONFIGURATION_CHANGED); filter.addAction(PcpConstants.ACTION_HIDE_APPS);*/ // mContext.registerReceiver(mModel, filter); // mManager.registerReceiver(mModel, filter); /*filter = new IntentFilter(); filter.addAction(SearchManager.INTENT_GLOBAL_SEARCH_ACTIVITY_CHANGED); mContext.registerReceiver(mModel, filter); filter = new IntentFilter(); filter.addAction(SearchManager.INTENT_ACTION_SEARCHABLES_CHANGED); mContext.registerReceiver(mModel, filter);*/ // Register for changes to the favorites ContentResolver resolver = mContext.getContentResolver(); resolver.registerContentObserver(LauncherSettings.Favorites.CONTENT_URI, true, mFavoritesObserver); } /* *//** * There's no guarantee that this function is ever called. *//* @Override public void onTerminate() { mContext.unregisterReceiver(mModel); ContentResolver resolver = getContentResolver(); resolver.unregisterContentObserver(mFavoritesObserver); } @Override public void onConfigurationChanged(Configuration configuration) { } @Override public void onLowMemory() { } @Override public void onTrimMemory(int i) { } @Override public void registerComponentCallbacks(ComponentCallbacks componentCallbacks) { } @Override public void unregisterComponentCallbacks(ComponentCallbacks componentCallbacks) { } @Override public void registerActivityLifecycleCallbacks(Application.ActivityLifecycleCallbacks activityLifecycleCallbacks) { } @Override public void unregisterActivityLifecycleCallbacks(Application.ActivityLifecycleCallbacks activityLifecycleCallbacks) { }*/ /** * Receives notifications whenever the user favorites have changed. */ private final ContentObserver mFavoritesObserver = new ContentObserver(new Handler()) { @Override public void onChange(boolean selfChange) { // If the database has ever changed, then we really need to force a reload of the // workspace on the next load mModel.resetLoadedState(false, true); mModel.startLoaderFromBackground(); } }; LauncherModel setLauncher(Launcher launcher) { mModel.initialize(launcher); return mModel; } IconCache getIconCache() { return mIconCache; } LauncherModel getModel() { return mModel; } void setLauncherProvider(LauncherProvider provider) { mLauncherProvider = new WeakReference<LauncherProvider>(provider); } LauncherProvider getLauncherProvider() { return mLauncherProvider.get(); } public static String getSharedPreferencesKey() { return sSharedPreferencesKey; } public static boolean isScreenLarge() { return sIsScreenLarge; } public static boolean isScreenLandscape(Context context) { return context.getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE; } public static float getScreenDensity() { return sScreenDensity; } public static int getLongPressTimeout() { return sLongPressTimeout; } }