Android ApiDemos示例解析(15)：App->Activity->SetWallpaper

SetWallpaper介绍如何在Android获取当前Wallpaper，对Wallpaper做些修改，然后用修改后的图像重新设置Wallpaper。

WallpaperManager用来管理Android的Wallpaper。下面代码通过WallpaperManager来取得当前Wallpaper然后显示在屏幕Layout的imageView上。

[java]
final WallpaperManager wallpaperManager
= WallpaperManager.getInstance(this);
final Drawable wallpaperDrawable
= wallpaperManager.getDrawable();
final ImageView imageView
= (ImageView) findViewById(R.id.imageview);
imageView.setDrawingCacheEnabled(true);
imageView.setImageDrawable(wallpaperDrawable);
final WallpaperManager wallpaperManager
= WallpaperManager.getInstance(this);
final Drawable wallpaperDrawable
= wallpaperManager.getDrawable();
final ImageView imageView
= (ImageView) findViewById(R.id.imageview);
imageView.setDrawingCacheEnabled(true);
imageView.setImageDrawable(wallpaperDrawable);
重新设置Wallpaper，也是通过WallpaperManager。

[java]
wallpaperManager.setBitmap(imageView.getDrawingCache());
wallpaperManager.setBitmap(imageView.getDrawingCache());

作者：mapdigit

补充：移动开发 , Android ,