AsyncTask

    class UriAPI{ 
        /** 定义一个Uri **/ 
        public static final String HTTPCustomer ="http://X.X.X.X:8080/AHMG/AddPayServlet";
    }

    class AT extends AsyncTask{
       
	        String result="";
	        
	        @Override
	        protected void onPreExecute(){
	                  progressDialog.show()  ;   //加载progressDialog
	        }
	         
	        @Override
	        protected Object doInBackground(Object... params_obj){
	        	 { // 与服务器交互数据
	                HttpPost httpRequest  = new HttpPost(UriAPI.HTTPCustomer ) ;    //请求数据
	                 List<NameValuePair> params=new ArrayList<NameValuePair>() ;    //创建参数 
	                 params.add(new BasicNameValuePair("payman", "a" ) );
	                 params.add(new BasicNameValuePair("paymoney",  paymoney  ) );
	                 params.add(new BasicNameValuePair("paydes",  paydes  ) );
	                 try{
	                     //对提交数据进行编码
	                    httpRequest.setEntity(new UrlEncodedFormEntity(params,HTTP.UTF_8));
	                    HttpResponse httpResponse=new DefaultHttpClient().execute(httpRequest);
	                    //获取响应服务器的数据
	                    if (httpResponse.getStatusLine().getStatusCode()==200) {
	                        //利用字节数组流和包装的绑定数据
	                        byte[] data =new byte[2048];
	                        //先把从服务端来的数据转化成字节数组
	                        data =EntityUtils.toByteArray((HttpEntity)httpResponse.getEntity()); 
	                        //再创建字节数组输入流对象  
	                        ByteArrayInputStream bais = new ByteArrayInputStream(data); 
	                         //绑定字节流和数据包装流  
	                        DataInputStream dis = new DataInputStream(bais); 
	                          //将字节数组中的数据还原成原来的各种数据类型，代码如下： 
	                        result=new String(dis.readUTF()) ;
	                           Log.i("服务器返回信息:", result);
	                    }
	                } catch(ClientProtocolException e){ 
	                    e.printStackTrace(); 
	                }catch(UnsupportedEncodingException e){ 
	                    e.printStackTrace(); 
	                } catch (IOException e) { 
	                    e.printStackTrace(); 
	                } 
	                 
	            }
	            return result;
	       }
	         
	        @Override
		    protected void onPostExecute(Object result) {  //获得服务器返回信息成功后
		        	    progressDialog.cancel() ;  //取消进度条
		                payop.setText(result.toString())  ;   //显示数据
		    }         
   }