java.lang.Class Cast Exception: com.lidroid.xutils.bitmap.core.Async Drawable cannot be cast to andr

如果使用xutils加载图片的朋友可能有的时候用上这种圆图处理会报异常

在其中加上这个判断就OK了

if(drawable instanceof BitmapDrawable){
b = ((BitmapDrawable)drawable).getBitmap() ;
}else if(drawable instanceof AsyncDrawable){
b = Bitmap
.createBitmap(
getWidth(),
getHeight(),
drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888
: Bitmap.Config.RGB_565);
Canvas canvas1 = new Canvas(b);
// canvas.setBitmap(bitmap);
drawable.setBounds(0, 0, getWidth(),
getHeight());
drawable.draw(canvas1);
}