Type Reason Java.IO.IOException If an error occurs reverting to the built-in wallpaper.
Remove any currently set wallpaper, reverting to the system's built-in wallpaper. On success, the intent Android.Content.Intent.ActionWallpaperChanged is broadcast.
This method requires the caller to hold the permission NoType:android/Manifest$permission;Href=../../../reference/android/Manifest.permission.html#SET_WALLPAPER.