1 /* 2 * Copyright (C) 2013 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.documentsui; 18 19 import android.app.ActivityManager; 20 import android.app.Application; 21 import android.content.BroadcastReceiver; 22 import android.content.ContentProviderClient; 23 import android.content.ContentResolver; 24 import android.content.Context; 25 import android.content.Intent; 26 import android.content.IntentFilter; 27 import android.net.Uri; 28 import android.os.RemoteException; 29 import android.text.format.DateUtils; 30 31 import com.android.documentsui.clipping.ClipStorage; 32 import com.android.documentsui.clipping.ClipStore; 33 import com.android.documentsui.clipping.DocumentClipper; 34 import com.android.documentsui.roots.ProvidersCache; 35 36 public class DocumentsApplication extends Application { 37 private static final long PROVIDER_ANR_TIMEOUT = 20 * DateUtils.SECOND_IN_MILLIS; 38 39 private ProvidersCache mProviders; 40 private ThumbnailCache mThumbnailCache; 41 private ClipStorage mClipStore; 42 private DocumentClipper mClipper; 43 getProvidersCache(Context context)44 public static ProvidersCache getProvidersCache(Context context) { 45 return ((DocumentsApplication) context.getApplicationContext()).mProviders; 46 } 47 getThumbnailCache(Context context)48 public static ThumbnailCache getThumbnailCache(Context context) { 49 final DocumentsApplication app = (DocumentsApplication) context.getApplicationContext(); 50 return app.mThumbnailCache; 51 } 52 acquireUnstableProviderOrThrow( ContentResolver resolver, String authority)53 public static ContentProviderClient acquireUnstableProviderOrThrow( 54 ContentResolver resolver, String authority) throws RemoteException { 55 final ContentProviderClient client = resolver.acquireUnstableContentProviderClient( 56 authority); 57 if (client == null) { 58 throw new RemoteException("Failed to acquire provider for " + authority); 59 } 60 client.setDetectNotResponding(PROVIDER_ANR_TIMEOUT); 61 return client; 62 } 63 getDocumentClipper(Context context)64 public static DocumentClipper getDocumentClipper(Context context) { 65 return ((DocumentsApplication) context.getApplicationContext()).mClipper; 66 } 67 getClipStore(Context context)68 public static ClipStore getClipStore(Context context) { 69 return ((DocumentsApplication) context.getApplicationContext()).mClipStore; 70 } 71 72 @Override onCreate()73 public void onCreate() { 74 super.onCreate(); 75 76 final ActivityManager am = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE); 77 final int memoryClassBytes = am.getMemoryClass() * 1024 * 1024; 78 79 mProviders = new ProvidersCache(this); 80 mProviders.updateAsync(false); 81 82 mThumbnailCache = new ThumbnailCache(memoryClassBytes / 4); 83 84 mClipStore = new ClipStorage( 85 ClipStorage.prepareStorage(getCacheDir()), 86 getSharedPreferences(ClipStorage.PREF_NAME, 0)); 87 mClipper = DocumentClipper.create(this, mClipStore); 88 89 final IntentFilter packageFilter = new IntentFilter(); 90 packageFilter.addAction(Intent.ACTION_PACKAGE_ADDED); 91 packageFilter.addAction(Intent.ACTION_PACKAGE_CHANGED); 92 packageFilter.addAction(Intent.ACTION_PACKAGE_REMOVED); 93 packageFilter.addAction(Intent.ACTION_PACKAGE_DATA_CLEARED); 94 packageFilter.addDataScheme("package"); 95 registerReceiver(mCacheReceiver, packageFilter); 96 97 final IntentFilter localeFilter = new IntentFilter(); 98 localeFilter.addAction(Intent.ACTION_LOCALE_CHANGED); 99 registerReceiver(mCacheReceiver, localeFilter); 100 } 101 102 @Override onTrimMemory(int level)103 public void onTrimMemory(int level) { 104 super.onTrimMemory(level); 105 106 mThumbnailCache.onTrimMemory(level); 107 } 108 109 private BroadcastReceiver mCacheReceiver = new BroadcastReceiver() { 110 @Override 111 public void onReceive(Context context, Intent intent) { 112 final Uri data = intent.getData(); 113 if (data != null) { 114 final String packageName = data.getSchemeSpecificPart(); 115 mProviders.updatePackageAsync(packageName); 116 } else { 117 mProviders.updateAsync(true); 118 } 119 } 120 }; 121 } 122