Android 解析Json-优快云博客

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.youkuaiyun.com/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\":\"\",\"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{ @Override public void onClick(View v) { // TODO Auto-generated method stub parseJson(); 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