android 百度翻译开发

android 百度翻译开发，这段代码在android 3.0以下版本是可以执行的，在4.0上就只能执行到HttpResponse response = httpClient.execute(httpPost); 求解

try{
                            HttpEntity httpEntity = new UrlEncodedFormEntity(postParams,HTTP.UTF_8);
                            HttpPost httpPost = new HttpPost(urlApi);
                            HttpClient httpClient = new DefaultHttpClient();
                            httpPost.addHeader("Content-Type", "application/x-www-form-urlencoded");
                            httpPost.setEntity(httpEntity);
                            HttpResponse response = httpClient.execute(httpPost);
                        if(response.getStatusLine().getStatusCode()==200){ 
                           String strResult=EntityUtils.toString(response.getEntity());
                           jsonObject =new JSONObject(strResult);
                           JSONArray json = jsonObject.getJSONArray("trans_result");
                           String showMessage="";
                           for(int i =0;i<json.length();i++){
                           JSONObject data =(JSONObject)json.get(i);
                           showMessage +=data.getString("dst");                
                           }
                           ToText.setText(showMessage);                         
                        }else{ 
                       ToText.setText("Error Response"+response.getStatusLine().toString()); 
                       } 
                        }
                        catch(Exception e){
                            Log.i("BaiduTrans.java", "百度翻译异常");
                        }

大家好 ，问题我已经解决了