刷新

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public class MainActivity extends Activity implements IXListViewListener {

String refresh = "http://ic.snssdk.com/2/article/v25/stream/?category=news_tech&count=20&min_behot_time=1465266200&bd_latitude=4.9E-324&bd_longitude=4.9E-324&bd_loc_time=1465265107&loc_mode=5&lac=4527&cid=28883&iid=4464422609&device_id=17258390367&ac=wifi&channel=baidu&aid=13&app_name=news_article&version_code=460&device_platform=android&device_type=SAMSUNG&os_api=19&os_version=4.4.4&uuid=353040417908000&openudid=84c1c7b192991cc6";

String more="http://ic.snssdk.com/2/article/v25/stream/?category=news_hot&count=20&max_behot_time=1465886546&bd_latitude=4.9E-324&bd_longitude=4.9E-324&bd_loc_time=1465889498&loc_mode=5&lac=4527&cid=28883&iid=4464422609&device_id=17258390367&ac=wifi&channel=baidu&aid=13&app_name=news_article&version_code=460&device_platform=android&device_type=SAMSUNG&os_api=19&os_version=4.4.4&uuid=353040417908000&openudid=84c1c7b192991cc6";

   LinkedList<DataBean> list = new LinkedList<DataBean>();

   Handler handler = new Handler() {
       private MyAdapter myAdapter;

       @SuppressWarnings("unchecked")
       public void handleMessage(android.os.Message msg) {

           switch (msg.what) {
           // 加载初始化数据
           case 1:
               list = (LinkedList<DataBean>) msg.obj;
               myAdapter = new MyAdapter(MainActivity.this, list);

               xlistView.setAdapter(myAdapter);
               // loadOver();
               break;
           // 刷新
           case 2:
               list.clear();
               for (DataBean dataBean : (LinkedList<DataBean>)msg.obj) {
                   //象开头添加
                   list.addFirst(dataBean);
               }
               // 刷新适配器
               myAdapter.notifyDataSetChanged();
               loadOver();
               break;
           // 加载更多
           case 3:

               for (DataBean dataBean : (LinkedList<DataBean>)msg.obj) {
                   //象结尾添加
                   list.addLast(dataBean);
               }
               // 刷新适配器
               myAdapter.notifyDataSetChanged();
               loadOver();
               break;
           }

       };

   };

   private XListView xlistView;

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);

       xlistView = (XListView) findViewById(R.id.xlistView);

       // 下拉刷新是否激活
       xlistView.setPullRefreshEnable(true);
       // 加载更多是否激活
       xlistView.setPullLoadEnable(true);
       // xlistView刷新和加载更多的监听
       xlistView.setXListViewListener(this);

       getData(1,refresh);

   }

   public void getData(final int i,String path) {

       HttpUtils httpUtils = new HttpUtils();

       httpUtils.configCurrentHttpCacheExpiry(0);

       httpUtils.send(HttpMethod.GET, path, new RequestCallBack<String>() {

           @Override
           public void onFailure(HttpException arg0, String arg1) {

           }

           @Override
           public void onSuccess(ResponseInfo<String> arg0) {

               String result = arg0.result;

               Gson gson = new Gson();

               Data data = gson.fromJson(result, Data.class);
               Message msg = Message.obtain();
               msg.obj = data.getData();
               msg.what = i;
               handler.sendMessage(msg);
           }
       });

   }

   // 停止加载更多/刷新
   public void loadOver() {
       // 停止加载更多
       xlistView.stopLoadMore();
       // 停止刷新
       xlistView.stopRefresh();
       //设置刷新时的时间
       xlistView.setRefreshTime(getTime());


   }

   /**
   * 刷新
   */
   @Override
   public void onRefresh() {

       getData(2,refresh);

   }

   /**
   * 加载更多
   */
   @Override
   public void onLoadMore() {

       getData(3,more);
   }

public String getTime(){


   SimpleDateFormat format=new SimpleDateFormat("hh:mm:ss");

   Date date=new Date();
   String time = format.format(date);
   return time;


}

}

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