1 /* 2 * Copyright (C) 2017 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 package com.android.wallpaper.backup; 17 18 import android.annotation.SuppressLint; 19 import android.app.WallpaperManager; 20 import android.content.BroadcastReceiver; 21 import android.content.Context; 22 import android.content.Intent; 23 24 import com.android.wallpaper.module.Injector; 25 import com.android.wallpaper.module.InjectorProvider; 26 import com.android.wallpaper.module.WallpaperPreferences; 27 28 /** 29 * Generates hash codes for currently set static image wallpapers on N+ devices where they are 30 * missing because older versions of the app did not generate and set them. 31 * <p> 32 * Static image wallpaper hash codes are necessary on N+ devices for the purposes of backup & 33 * restore because N+ WallpaperManager integer IDs are local to physical devices and not backed up 34 * and restored on the framework side. 35 */ 36 @SuppressLint("ServiceCast") 37 public class MissingHashCodeGenerator extends BroadcastReceiver { 38 39 @Override onReceive(Context context, Intent intent)40 public void onReceive(Context context, Intent intent) { 41 String action = intent.getAction(); 42 if (action == null || !action.equals(Intent.ACTION_MY_PACKAGE_REPLACED)) { 43 return; 44 } 45 46 WallpaperManager wallpaperManager = WallpaperManager.getInstance(context); 47 48 // Make this receiver a no-op if running in the context of profile where wallpapers are not 49 // supported. 50 if (!wallpaperManager.isWallpaperSupported()) { 51 return; 52 } 53 54 Injector injector = InjectorProvider.getInjector(); 55 WallpaperPreferences wallpaperPreferences = injector.getPreferences(context); 56 // Delegate the longer-running work of generating missing hash codes to a JobScheduler job if 57 // there's no hash codes saved. 58 if (wallpaperPreferences.getHomeWallpaperHashCode() != 0 59 && wallpaperPreferences.getLockWallpaperHashCode() != 0) { 60 return; 61 } 62 63 MissingHashCodeGeneratorJobService.schedule(context); 64 } 65 } 66