TypeToken解析

来源：互联网发布：淘宝巴巴爸爸是正品吗编辑：程序博客网时间：2024/06/05 17:19

package com.bwie.wdhm;

import java.io.IOException;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;

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 org.apache.http.util.EntityUtils;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.widget.ListView;

import com.bwei.adapter.Myadapter;
import com.bwie.bean.Root;
import com.example.gaoxin1409a20160523.R;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;

@SuppressLint(“HandlerLeak”)
public class MainActivity extends Activity {
private List list = new ArrayList();
private ListView lv;
private List typelist;
private Handler handler = new Handler(){
@Override
public void handleMessage(Message msg) {
list = (List) msg.obj;
System.out.println(list.size());
Myadapter adapter = new Myadapter(MainActivity.this,list);
lv.setAdapter(adapter);
}
};

    @Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);   //获取控件         lv = (ListView)findViewById(R.id.lv);       //启动子线程用于开启数据    new Thread(){        @Override        public void run() {            NetWork();        }    }.start();}//请求网络数据public void NetWork(){    //请求地址    String url = "http://172.17.29.120/localuser/ljy/datas/data.json";    HttpClient httpClient = new DefaultHttpClient();    //请求类型    HttpGet httpGet = new HttpGet(url);    //发送给服务器    try {        HttpResponse response = httpClient.execute(httpGet);        //从服务器取值        HttpEntity entity = response.getEntity();        //转换为String类型        String str = EntityUtils.toString(entity,"gbk");        //用于解析数据类型的JsON串        typelist = new ArrayList<Root>();        Type type = new TypeToken<List<Root>>(){}.getType();        Gson gson = new Gson();        typelist  = gson.fromJson(str, type);        //发送给Handler        Message msg = Message.obtain();        msg.obj = typelist;        handler.sendMessage(msg);    } catch (ClientProtocolException e) {        // TODO Auto-generated catch block        e.printStackTrace();    } catch (IOException e) {        // TODO Auto-generated catch block        e.printStackTrace();    }}

}

0 0