package com.example.httpdemo;

 import android.os.Bundle;

 import android.app.Activity;

 import android.view.Menu;

 import android.widget.TextView;

 public class MainActivity extends Activity implements HttpDataUrlListener{

     private HttpData httpdata;

     private TextView tx;

     @Override

     protected void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.activity_main);

         httpdata = (HttpData) new HttpData("http://www.tuling123.com/openapi/api?key=6***************dfff&info=今天天气怎么样&loc=北京市中关村&userid=12345678",this).execute();

         tx = (TextView)findViewById(R.id.txt);

     }

     @Override

     public void GetDataUrl(String data) {

         // TODO Auto-generated method stub

         System.out.println(data);

         tx.setText(data);

     }

 }

 package com.example.httpdemo;

 import java.io.BufferedReader;

 import java.io.IOException;

 import java.io.InputStream;

 import java.io.InputStreamReader;

 import org.apache.http.HttpEntity;

 import org.apache.http.HttpResponse;

 import org.apache.http.client.ClientProtocolException;

 import org.apache.http.client.HttpClient;

 import org.apache.http.client.methods.HttpGet;

 import org.apache.http.impl.client.DefaultHttpClient;

 import android.os.AsyncTask;

 public class HttpData extends AsyncTask<String, Void, String>{

     //1.创建客户端

     private HttpClient mhttpclient;

     //2。指明传递的方法

     private HttpGet mhttpget;

     //3.做出回应

     private HttpResponse mhttpresponse;

     //4.创建实体

     private HttpEntity mhttpentity;

     //5.使用数据流进行数据的传输

     private InputStream in;

     //6.创建缓冲区

     private BufferedReader br;

     //7.储存所有的数据

     private StringBuffer sb;

     //声明接口

     private HttpDataUrlListener listener;

     private String url;

     public HttpData(){

     }

     public HttpData(String url){

         this.url = url;

     }

     public HttpData(String url,HttpDataUrlListener listener){

         this.url = url;

         this.listener = listener;

     }

     @Override

     protected String doInBackground(String... params) {

         // TODO Auto-generated method stub

         try {

             //实例化一个客户端

             mhttpclient = new DefaultHttpClient();

             //使用get方法进行传递

             mhttpget = new HttpGet(url);

             //通过客户端进行发送

             mhttpresponse = mhttpclient.execute(mhttpget);

             //通过response方法获取实体

             mhttpentity = mhttpresponse.getEntity();

             //通过流获取具体的内容

             in = mhttpentity.getContent();

             //创建缓冲区

             br = new BufferedReader(new InputStreamReader(in));

             String line = null;

             sb = new StringBuffer();

             while ((line = br.readLine())!=null){

                 sb.append(line);

             }

             return sb.toString();

         } catch (ClientProtocolException e) {

             // TODO Auto-generated catch block

             e.printStackTrace();

         } catch (IOException e) {

             // TODO Auto-generated catch block

             e.printStackTrace();

         }

         //

         return null;

     }

     @Override

     protected void onPostExecute(String result) {

         // TODO Auto-generated method stub

         listener.GetDataUrl(result);

         super.onPostExecute(result);

     }

 }

 package com.example.httpdemo;

 public interface HttpDataUrlListener {

     void GetDataUrl(String data);

 }