Android(安卓)解析Json

应用中我导入了一个包

Gson 是 Google 提供的用来在 Java 对象和 JSON 数据之间进行映射的 Java 类库。可以将一个 JSON 字符串转成一个 Java 对象，或者反过来。

下载地址:我的资源里面

http://download.csdn.net/detail/rwyz1314/3597488

主要代码

package rw.json1;import java.io.StringReader;import java.util.ArrayList;import java.util.List;import com.google.gson.stream.JsonReader;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Adapter;import android.widget.ArrayAdapter;import android.widget.Button;import android.widget.ListAdapter;import android.widget.ListView;public class json1Activity extends Activity {private List<String> list=new ArrayList<String>();    //架设服务器的JSOn数据室乳腺的private String jsonData = "[{\"id\":\"2009081315\",\"name\":\"饶伟\",\"speciality\":\"计算机科学与技术\",\"qq\":812200157}," +"{\"id\":\"2009081316\",\"name\":\"小伟\",\"speciality\":\"软件工程\",\"qq\":321836987}" +"{\"id\":\"2009081315\",\"name\":\"伟哥\",\"speciality\":\"网络工程\",\"qq\":270046452}]";private Button button ;private ListView listView;    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        button=(Button)findViewById(R.id.button);        listView=(ListView)findViewById(R.id.listView1);        button.setOnClickListener(new MyButtonListener());    }    class MyButtonListener implements OnClickListener{@Overridepublic void onClick(View v) {// TODO Auto-generated method stubparseJson();   Adapter adapter=new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_list_item_1, list);   listView.setAdapter((ListAdapter) adapter);}        }    public List<String> parseJson() {    try {    JsonReader reader=new JsonReader(new StringReader(jsonData));    reader.beginArray();    while (reader.hasNext()) {    reader.beginObject();    while (reader.hasNext()) {    String tagString=reader.nextName();        String string ="";    if (tagString.equals("id")) {    string="学号:"+reader.nextLong();     }    else if (tagString.equals("name")) {    string="姓名:"+reader.nextString();        }    else if (tagString.equals("speciality")) {    string="专业:"+reader.nextString();        }    else if (tagString.equals("qq")) {    string="QQ:"+reader.nextLong();        }    list.add(string);    }    reader.endObject();    }    reader.endArray();    } catch (Exception e) {    // TODO: handle exception    e.printStackTrace();    }    return list;    }}

结果如下图

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