裁剪圆角图片

public static Bitmap ReadBitmap(byte[] byt) {

BitmapFactory.Options options = new BitmapFactory.Options();

options.inPreferredConfig = Config.ARGB_8888;

options.inInputShareable = true;

options.inPurgeable = true;

Bitmap bitmap = BitmapFactory.decodeByteArray(byt, 0, byt.length);

/**

* 以下为裁剪圆角图片

*

* */

int w = bitmap.getWidth();

int h = bitmap.getHeight();

Bitmap output = Bitmap.createBitmap(w, h, Config.ARGB_8888);

Canvas canvas = new Canvas(output);

final int color = 0xff424242;

final Paint paint = new Paint();

final Rect rect = new Rect(0, 0, w, h);

final RectF rectF = new RectF(rect);

paint.setAntiAlias(true);

canvas.drawARGB(0, 0, 0, 0);

paint.setColor(color);

canvas.drawRoundRect(rectF, 10, 10, paint);

paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));

canvas.drawBitmap(bitmap, rect, rect, paint);

return output;

}