Android development method to realize rounded corners of pictures

Bitmap myCoolBitmap = ... ; // <-- Your bitmap you want rounded
int w = (), h = ();
Bitmap rounder = (w,h,.ARGB_8888);
Canvas canvas = new Canvas(rounder);
Paint xferPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
();
(new RectF(0,0,w,h), 20.0f, 20.0f, xferPaint);
(new PorterDuffXfermode(.DST_IN));
(myCoolBitmap, 0,0, null);
(rounder, 0, 0, xferPaint);

public static Bitmap getRoundedCornerBitmap(Bitmap bitmap) {
  Bitmap output = ((),
    (), Config.ARGB_8888);
  Canvas canvas = new Canvas(output);
  final int color = 0xff424242;
  final Paint paint = new Paint();
  final Rect rect = new Rect(0, 0, (), ());
  final RectF rectF = new RectF(rect);
  final float roundPx = 12;
  (true);
  (0, 0, 0, 0);
  (color);
  (rectF, roundPx, roundPx, paint);
  (new PorterDuffXfermode(Mode.SRC_IN));
  (bitmap, rect, rect, paint);
  return output;
}