本文实例讲述了Android生成带圆角的Bitmap图片。分享给大家供大家参考。具体如下：

有时候我们在开发Android应用时，会遇到圆角图片的问题，那么，我们如何在Android中用代码来生成圆角Bitmap图片呢？下面这段代码也许能够帮到你。
该方法主要用到了drawRoundRect来画圆角矩形，然后通过drawBitmap来画图片。

//生成圆角图片
public static Bitmap GetRoundedCornerBitmap(Bitmap bitmap) {
 try {
  Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),
    bitmap.getHeight(), Config.ARGB_8888);
  Canvas canvas = new Canvas(output);    
  final Paint paint = new Paint();
  final Rect rect = new Rect(0, 0, bitmap.getWidth(),
    bitmap.getHeight());  
  final RectF rectF = new RectF(new Rect(0, 0, bitmap.getWidth(),
    bitmap.getHeight()));
  final float roundPx = 14;
  paint.setAntiAlias(true);
  canvas.drawARGB(0, 0, 0, 0);
  paint.setColor(Color.BLACK);  
  canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
  paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
  final Rect src = new Rect(0, 0, bitmap.getWidth(),
    bitmap.getHeight());
  canvas.drawBitmap(bitmap, src, rect, paint); 
  return output;
 } catch (Exception e) {  
  return bitmap;
 }
}

希望本文所述对大家的Android程序设计有所帮助。