content: /*
   * Copyright (C) 2018 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.android.server;
  
  import android.app.ActivityThread;
  import android.app.WallpaperManager;
  import android.content.BroadcastReceiver;
  import android.content.Context;
  import android.content.Intent;
  import android.graphics.Bitmap;
  import android.os.AsyncTask;
  import android.util.Slog;
  
  /**
   * Receiver responsible for updating the wallpaper when the device
   * configuration has changed.
   *
   * @hide
   */
  public class WallpaperUpdateReceiver extends BroadcastReceiver {
  
      private static final String TAG = "WallpaperUpdateReceiver";
      private static final boolean DEBUG = false;
  
      @Override
      public void onReceive(final Context context, final Intent intent) {
          if (DEBUG) Slog.d(TAG, "onReceive: " + intent);
  
          if (intent != null && Intent.ACTION_DEVICE_CUSTOMIZATION_READY.equals(intent.getAction())) {
              AsyncTask.execute(this::updateWallpaper);
          }
      }
  
      private void updateWallpaper() {
          try {
              ActivityThread currentActivityThread = ActivityThread.currentActivityThread();
              Context uiContext = currentActivityThread.getSystemUiContext();
              WallpaperManager wallpaperManager = WallpaperManager.getInstance(uiContext);
              if (DEBUG) Slog.d(TAG, "Set customized default_wallpaper.");
              Bitmap blank = Bitmap.createBitmap(1, 1, Bitmap.Config.ALPHA_8);
              // set a blank wallpaper to force a redraw of default_wallpaper
              wallpaperManager.setBitmap(blank);
              wallpaperManager.setResource(com.android.internal.R.drawable.default_wallpaper);
          } catch (Exception e) {
              Slog.w(TAG, "Failed to customize system wallpaper." + e);
          }
      }
  }
  