实现Xlistview多条目加载

[android]代码库
////////////////////////////MainActivity
 
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
 
import bean.Bean;
import bean.Info;
 
import com.adapter.weixin.MyBaseAdapter;
import com.google.gson.Gson;
import com.lidroid.xutils.HttpUtils;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;
import com.lidroid.xutils.http.client.HttpRequest.HttpMethod;
import com.xlistview.xlistview.XListView;
import com.xlistview.xlistview.XListView.IXListViewListener;
 
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.app.Activity;
public class MainActivity extends Activity implements IXListViewListener{
    private XListView xListView;
    private String path;
    List<Info> list = new ArrayList<Info>();
    private MyBaseAdapter myBaseAdapter;
    private int tag=1;
    Handler handler=new Handler(){
        public void handleMessage(Message msg) {
            //获取从网络获取的数据
            String s=(String) msg.obj;
            Gson gson=new Gson();
            Bean bean = gson.fromJson(s, Bean.class);
            int i=msg.arg1;
            switch (i) {
            case 1:
                //清空之前的数据
                list.clear();
                list.addAll(bean.result.list);
                myBaseAdapter.notifyDataSetChanged();
                xListView.stopRefresh();
                //刷新时间
                SimpleDateFormat dateFormat=new SimpleDateFormat();
                String format = dateFormat.format(new Date());
                xListView.setRefreshTime(format);
                break;
            case 2:
                list.addAll(bean.result.list);
                myBaseAdapter.notifyDataSetChanged();
                xListView.stopLoadMore();
                break;
            case 3:
                list.addAll(bean.result.list);
                myBaseAdapter=new MyBaseAdapter(MainActivity.this, list);
                xListView.setAdapter(myBaseAdapter);
                 
                break;
 
            default:
                break;
            }
        };
    };
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        xListView=(XListView) findViewById(R.id.listview);
        getData(3);
        //开启加载更多
        xListView.setPullLoadEnable(true);
        //设置监听
        xListView.setXListViewListener(this);
    }
    //下拉刷新
    @Override
    public void onRefresh() {
        // TODO Auto-generated method stub
        //联网得到新的数据
        getData(1);
    }
    //上拉加载
    @Override
    public void onLoadMore() {
        // TODO Auto-generated method stub
        getData(2);
    }
    private void getData(final int i) {
        //上拉刷新的联网请求
        if(i==1){
            path = "http://v.juhe.cn/weixin/query?key=b3edac6e41f3f3c84b855019e47b7ace&pno=" + 1;
        }else if(i==2){
            path = "http://v.juhe.cn/weixin/query?key=b3edac6e41f3f3c84b855019e47b7ace&pno=" +(tag+=1);
        }//第一次进入时的界面请求的数据
        else if(i==3){
            path = "http://v.juhe.cn/weixin/query?key=b3edac6e41f3f3c84b855019e47b7ace&pno=" + 1;
        }
        HttpUtils httpUtils=new HttpUtils();
        httpUtils.send(HttpMethod.GET,path,new RequestCallBack<String>() {
            //联网失败
            @Override
            public void onFailure(HttpException arg0, String arg1) {
                // TODO Auto-generated method stub
                 
            }
            //联网成功
            @Override
            public void onSuccess(ResponseInfo<String> arg0) {
                // TODO Auto-generated method stub
                //把响应信息发送给hander
                Message msg=Message.obtain();
                String result = arg0.result;
                msg.obj=result;
                msg.arg1=i;
                handler.sendMessage(msg);
                 
            }
        });
    }
}
 
//////////////////////////////////////////////////////////适配器
 
public class MyBaseAdapter extends BaseAdapter{
    private Context context;
    private List<Info> list;
     
    public MyBaseAdapter(Context context, List<Info> list) {
        super();
        this.context = context;
        this.list = list;
    }
 
    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return list.size();
    }
 
    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return list.get(position);
    }
 
    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return position;
    }
 
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        ViewHolder v;
        if(convertView==null){
            convertView=View.inflate(context, R.layout.listview,null);
            v=new ViewHolder();
            v.name=(TextView) convertView.findViewById(R.id.listview_name);
            v.title=(TextView) convertView.findViewById(R.id.listview_title);
            convertView.setTag(v);
        }else{
            v=(ViewHolder) convertView.getTag();
        }
        v.title.setText(list.get(position).url);
        v.name.setText(list.get(position).title);
        return convertView;
    }
    class ViewHolder{
        TextView title,name;
    }
}
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