Android网络编程之获取网络上的Json数据实例(3)

package com.jph.gj.activity;
 
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.jph.gj.R;
import com.jph.gj.service.GetAndParseJson;
import com.jph.model.News;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.app.Activity;
import android.widget.ListView;
import android.widget.SimpleAdapter;
 
/**
 * 获取网络上的Json
 * @author jph
 * Date:2014.09.26
 */
public class MainActivity extends Activity {
    private List<News>listNews;
    private ListView list;
    Handler mHandler=new Handler(){
        @Override
        public void handleMessage(Message msg) {
            // TODO Auto-generated method stub
            switch (msg.what) {
            case GetAndParseJson.PARSESUCCWSS:
                listNews=(List<News>) msg.obj;
                initData();
                break;        
            }
            super.handleMessage(msg);
        }     
    };
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        list=(ListView)findViewById(R.id.list);
        GetAndParseJson getAndParseJson=new GetAndParseJson(mHandler);
        getAndParseJson.getJsonFromInternet();
    }
    /**
     * 将解析后的xml填充到ListView
     */
    protected void initData() {
        // TODO Auto-generated method stub
        List<Map<String, Object>>items=new ArrayList<Map<String,Object>>();
        for (News news:listNews) {
            Map<String, Object>item=new HashMap<String, Object>();
            item.put("id", news.getId());
            item.put("title", news.getTitle());
            item.put("time", convertDate(news.getPublishDate()));
            items.add(item);
        }
        SimpleAdapter adapter=new SimpleAdapter(this, items, R.layout.line, new String[]
                {"id","title","time"}, new int[]{R.id.tvId,R.id.tvTitle,R.id.tvTime});
        list.setAdapter(adapter);
    }
    private String convertDate(Date publishDate) {
        // TODO Auto-generated method stub
        SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH-mm-ss");     
        return sdf.format(publishDate);
    }
}