android 从服务器请求url并做圆角处理

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//服务器给个url在客户端请求并且进行圆角处理

//用的xutils框架get请求

private void get_shifu_img() {

       String str_url="";

               String t=String.valueOf(System.currentTimeMillis()).substring(0,10);
               str_url=Config.STR_SERVICE_URL + "/get_master_img/client_type/android/t/"+t+"/u/"+u+"/q/"+Common.toSign(u, p, t);

               HttpUtils http_get = new HttpUtils();

                    http_get.send(HttpMethod.GET, str_url, new RequestCallBack<String>() {

                       @Override
                            public void onLoading(long total, long current, boolean isUploading) {
                            }
                       @Override
                       public void onFailure(HttpException arg0, String arg1) {
                           Toast.makeText(MapActivity.this, "加载失败，请检查网络设置", Toast.LENGTH_SHORT).show();
                       }
                       @SuppressLint("NewApi")
                       @Override
                       public void onSuccess(ResponseInfo<String> arg0) {
                           try {
                               JSONObject jo = Common.toJSONObject(arg0.result);
                               img_me=   jo.getString("info");
                   //           bitmapUtils.display(iv_shifu_touxiang,Config.STR_SERVICE_URL+img_me);如果不进行圆角处理，在这里就直接可以用display了
                               getBitmap(Config.STR_SERVICE_URL+img_me); //这个方法把url网址转变成bitmap图片

                           } catch (Exception e) {
                               e.printStackTrace();
                           }
                       }
                   });

   }

void getBitmap(final String path){
       new Thread(){
           @Override
           public void run() {
               URL url=null;
               try {
               url = new URL(path);

               } catch (MalformedURLException e) {
                   e.printStackTrace();
               }
               if(url!=null){
                   try {
                       HttpURLConnection conn;
                       conn = (HttpURLConnection)url.openConnection();
                       conn.setConnectTimeout(5000);
                       conn.setRequestMethod("GET");
                       if(conn.getResponseCode() == 200){
                           InputStream inputStream = conn.getInputStream();
                           Bitmap       bitmap = BitmapFactory.decodeStream(inputStream);//把流转换成bitmap
                           Message msg = new Message(); //不能放在主线程之中以免阻塞
                                msg.what = 110;
                                msg.obj = bitmap;
                                handler.sendMessage(msg);
                       }
                   } catch (IOException e) {
                       // TODO Auto-generated catch block
                       e.printStackTrace();
                   }

               }

           };
       }.start();
     }

new 一个handler接收下
case 110:
                      bit=(Bitmap) msg.obj;
                      Bitmap output=toRoundBitmap(bit);//转换图片为圆形
                        iv_shifu_touxiang.setImageBitmap(output);
                   break;

public Bitmap toRoundBitmap(Bitmap bitmap) {
            int width = bitmap.getWidth();
            int height = bitmap.getHeight();
            float roundPx;
            float left, top, right, bottom, dst_left, dst_top, dst_right, dst_bottom;
            if (width <= height) {
                roundPx = width / 2;
                left = 0;
                top = 0;
                right = width;
                bottom = width;
                height = width;
                dst_left = 0;
                dst_top = 0;
                dst_right = width;
                dst_bottom = width;
            } else {
                roundPx = height / 2;
                float clip = (width - height) / 2;
                left = clip;
                right = width - clip;
                top = 0;
                bottom = height;
                width = height;
                dst_left = 0;
                dst_top = 0;
                dst_right = height;
                dst_bottom = height;
            }

            Bitmap output = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
            Canvas canvas = new Canvas(output);

            final int color = 0xff424242;
            final Paint paint = new Paint();
            final Rect src = new Rect((int) left, (int) top, (int) right, (int) bottom);
            final Rect dst = new Rect((int) dst_left, (int) dst_top, (int) dst_right, (int) dst_bottom);
            final RectF rectF = new RectF(dst);

            paint.setAntiAlias(true);// 设置画笔无锯齿

            canvas.drawARGB(0, 0, 0, 0); // 填充整个Canvas
            paint.setColor(color);

            // 以下有两种方法画圆,drawRounRect和drawCircle
            // canvas.drawRoundRect(rectF, roundPx, roundPx, paint);// 画圆角矩形，第一个参数为图形显示区域，第二个参数和第三个参数分别是水平圆角半径和垂直圆角半径。
            canvas.drawCircle(roundPx, roundPx, roundPx, paint);

            paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));// 设置两张图片相交时的模式,参考http://trylovecatch.iteye.com/blog/1189452
            canvas.drawBitmap(bitmap, src, dst, paint); //以Mode.SRC_IN模式合并bitmap和已经draw了的Circle

            return output;
        }

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