Android drawable change to bitmap

[java]
public static Bitmap drawableToBitmap(Drawable drawable) { 
 
    Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), 
            drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565); 
    Canvas canvas = new Canvas(bitmap); 
 
    drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight()); 
    drawable.draw(canvas); 
    return bitmap; 
} 

补充：移动开发 , Android ,