google-gson解析json数据---小实例

由于android SDK中提供的JsonReader在API level 3.0才支持，所以这里采用google-gson提供的gson-2.0.jar来解析json数据.

gson-2.0.jar的下载地址为: http://code.google.com/p/google-gson/downloads/list

1、JsonUtils.java源码:

package com.android.hmr;

import java.io.IOException;

import java.io.StringReader;

import com.google.gson.stream.JsonReader;

public class JsonUtils {

public void parseJson(String jsonData){

JsonReader reader = new JsonReader(new StringReader(jsonData));

try {

reader.beginArray();

while(reader.hasNext()){

reader.beginObject();

while(reader.hasNext()){

String tagName = reader.nextName();

if(tagName.equals("name")){

System.out.println("name:" + reader.nextString());

}

else if(tagName.equals("age")){

System.out.println("age:" + reader.nextInt());

}

}

reader.endObject();

}

reader.endArray();

}catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

2、JsonActivity.java 源码:

package com.broadvision;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

public class JsonActivity extends Activity {

private Button btn = null;

private String jsonData = "[{\"name\":\"muran hu\",\"age\":20},{\"name\":\"congyu xiang\",\"age\":20}]";

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

btn = (Button)findViewById(R.id.btn);

btn.setOnClickListener(new btnOnClickListener());

}

private class btnOnClickListener implements OnClickListener{

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

JsonUtils jsonUtils = new JsonUtils();

jsonUtils.parseJson(jsonData);

}

}

}

页面布局很是简单，一个Button就搞定，所以这里没有贴出页面布局XML代码，相信您一定会搞定滴！