1 /* 2 * Copyright (C) 2018 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.server; 18 19 import android.app.ActivityThread; 20 import android.app.WallpaperManager; 21 import android.content.BroadcastReceiver; 22 import android.content.Context; 23 import android.content.Intent; 24 import android.graphics.Bitmap; 25 import android.os.AsyncTask; 26 import android.util.Slog; 27 28 /** 29 * Receiver responsible for updating the wallpaper when the device 30 * configuration has changed. 31 * 32 * @hide 33 */ 34 public class WallpaperUpdateReceiver extends BroadcastReceiver { 35 36 private static final String TAG = "WallpaperUpdateReceiver"; 37 private static final boolean DEBUG = false; 38 39 @Override 40 public void onReceive(final Context context, final Intent intent) { 41 if (DEBUG) Slog.d(TAG, "onReceive: " + intent); 42 43 if (intent != null && Intent.ACTION_DEVICE_CUSTOMIZATION_READY.equals(intent.getAction())) { 44 AsyncTask.execute(this::updateWallpaper); 45 } 46 } 47 48 private void updateWallpaper() { 49 try { 50 ActivityThread currentActivityThread = ActivityThread.currentActivityThread(); 51 Context uiContext = currentActivityThread.getSystemUiContext(); 52 WallpaperManager wallpaperManager = WallpaperManager.getInstance(uiContext); 53 if (DEBUG) Slog.d(TAG, "Set customized default_wallpaper."); 54 Bitmap blank = Bitmap.createBitmap(1, 1, Bitmap.Config.ALPHA_8); 55 // set a blank wallpaper to force a redraw of default_wallpaper 56 wallpaperManager.setBitmap(blank); 57 wallpaperManager.setResource(com.android.internal.R.drawable.default_wallpaper); 58 } catch (Exception e) { 59 Slog.w(TAG, "Failed to customize system wallpaper." + e); 60 } 61 } 62 } 63
