1 class MyTask_SendMessage extends AsyncTask<String, Void, String> { 2  3         @Override 4         protected void onPostExecute(String result) { 5             super.onPostExecute(result); 6             ShowResponseFromTuling(result); 7         } 8  9         @Override10         protected String doInBackground(String... arg0) {11             HttpPost request = new HttpPost(arg0[0]);12             // 必须要添加该Http头才能调用WebMethod时返回JSON数据13             request.addHeader("Content-Type", "application/json; charset=utf-8");14 15             try {16                 // 添加参数17                 JSONObject param = new JSONObject();18                 param.put("key", Constants.API_KEY);19                 param.put("info", arg0[1]);20                 HttpEntity entity = new StringEntity(param.toString(), "utf-8");21                 request.setEntity(entity);22 23                 // 发送请求并获取反馈24                 HttpResponse response = new DefaultHttpClient()25                         .execute(request);26                 int code = response.getStatusLine().getStatusCode();27                 if (code == 200) {28                     String result = EntityUtils.toString(response.getEntity());29                     return result.toString();30                 }31                 return "";32             } catch (Exception e) {33                 // TODO Auto-generated catch block34                 e.printStackTrace();35             }36             return "";37         }38 39     }