Android图片圆角处理

 

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