解析JSON文件

package com.pingyijinren.test;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.json.JSONArray;
import org.json.JSONObject;

public class MainActivity extends AppCompatActivity{
private Button button;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

button=(Button)findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
sendRequestWithHttpURLConnection();
}
});
}

private void sendRequestWithHttpURLConnection(){
new Thread(new Runnable(){
@Override
public void run(){
try{
HttpClient httpClient = new DefaultHttpClient();
HttpGet httpGet=new HttpGet("http://172.29.209.1/get_data.json");
HttpResponse httpResponse=httpClient.execute(httpGet);
if(httpResponse.getStatusLine().getStatusCode()==200){
HttpEntity httpEntity=httpResponse.getEntity();
String response= EntityUtils.toString(httpEntity,"utf-8");

parseJSONWithJSONObject(response);
}
}
catch(Exception e){
e.printStackTrace();
}
}
}).start();
}

private void parseJSONWithJSONObject(String jsonData){
try{
JSONArray jsonArray=new JSONArray(jsonData);
for(int i=0;i<jsonArray.length();i++){
JSONObject jsonObject=jsonArray.getJSONObject(i);
Log.d("MainActivity","id is "+jsonObject.getString("id"));
Log.d("MainActivity","version is "+jsonObject.getString("version"));
Log.d("MainActivity","name is "+jsonObject.getString("name"));
}
}
catch(Exception e){
e.printStackTrace();
}
}
}