如何将当前壁纸设置为我的应用程序背景图像 Android？

Question

我想获取手机当前的壁纸并将该图片设置为应用程序的背景图片。我试过这种方式，但它显示运行时异常

final WallpaperManager wallpaperManager = WallpaperManager.getInstance(this);
final Drawable wallpaperDrawable = wallpaperManager.getDrawable();
layout.setBackground(wallpaperDrawable);

Answer 1

 final WallpaperManager wallpaperManager = WallpaperManager.getInstance(this);
 final Drawable wallpaperDrawable = wallpaperManager.getFastDrawable();
 getWindow().setBackgroundDrawable(wallpaperDrawable);