Android开发实现图片圆角的方法

本文讲述了android开发实现图片圆角的方法。分享给大家供大家参考，具体如下：

bitmap mycoolbitmap = ... ; // <-- your bitmap you want rounded
int w = mycoolbitmap.getwidth(), h = mycoolbitmap.getheight();
bitmap rounder = bitmap.createbitmap(w,h,bitmap.config.argb_8888);
canvas canvas = new canvas(rounder);
paint xferpaint = new paint(paint.anti_alias_flag);
xferpaint.setcolor(color.red);
canvas.drawroundrect(new rectf(0,0,w,h), 20.0f, 20.0f, xferpaint);
xferpaint.setxfermode(new porterduffxfermode(porterduff.mode.dst_in));
canvas.drawbitmap(mycoolbitmap, 0,0, null);
canvas.drawbitmap(rounder, 0, 0, xferpaint);

或者：

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;
}

更多关于android相关内容感兴趣的读者可查看本站专题：《android图形与图像处理技巧总结》、《android开发入门与进阶教程》、《android调试技巧与常见问题解决方法汇总》、《android多媒体操作技巧汇总(音频,视频,录音等)》、《android基本组件用法总结》、《android视图view技巧总结》、《android布局layout技巧总结》及《android控件用法总结》

希望本文所述对大家android程序设计有所帮助。