android使用PullToRefresh框架实现ListView下拉刷新上拉加载更多

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:tools="http://schemas.android.com/tools"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:orientation="vertical">   <!-- 我们添加了一个属性：ptr:ptrMode="both" ，意思：上拉和下拉都支持。   可选值为：disabled（禁用下拉刷新），pullFromStart（仅支持下拉刷新），   pullFromEnd（仅支持上拉刷新），both（二者都支持），manualOnly（只允许手动触发） -->  <!--   ptr:ptrAnimationStyle="rotate"   FlipLoadingLayout为iOS风格的箭头颠倒的刷新动画   ptr:ptrAnimationStyle="flip"   RotateLoadingLayout为android风格的图片旋转动画 -->  <com.ptrflv.www.pulltorefreshlistview.PullToRefreshListView   xmlns:ptr="http://schemas.android.com/apk/res-auto"   android:id="@+id/pull_to_refresh_listview"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   ptr:ptrMode="both"   ptr:ptrAnimationStyle="flip"    />  </LinearLayout>

<?xml version="1.0" encoding="utf-8"?> <resources>   <!-- 上拉刷新 -->  <!-- …代表三个点 ... -->  <string name="pull_to_refresh_pull_label">向下拉刷新…</string>  <string name="pull_to_refresh_release_label">松开更新…</string>  <string name="pull_to_refresh_refreshing_label">正在加载…</string>   <!-- 下拉加载更多 -->  <string name="pull_to_refresh_from_bottom_pull_label">向下拉加载更多…</string>  <string name="pull_to_refresh_from_bottom_release_label">松开加载更多…</string>  <string name="pull_to_refresh_from_bottom_refreshing_label">正在加载…</string>  </resources> 

public class MainActivity extends Activity {   private PullToRefreshListView pullToRefreshListView;  //adapter的数据源  private List<String> numList=new ArrayList<String>();  private ArrayAdapter<String> arrayAdapter;    @Override  protected void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.activity_main);   pullToRefreshListView=(PullToRefreshListView) findViewById(R.id.pull_to_refresh_listview);   //初始化数据   for(int x=0;x<18;x++){    numList.add(""+x);   }      arrayAdapter = new ArrayAdapter<String>(this, R.layout.item_listview,R.id.textview,numList);   pullToRefreshListView.setAdapter(arrayAdapter);      //设定刷新监听   pullToRefreshListView.setOnRefreshListener(new OnRefreshListener<ListView>() {     @Override    public void onRefresh(PullToRefreshBase<ListView> refreshView) {          String label = DateUtils.formatDateTime(getApplicationContext(), System.currentTimeMillis(),        DateUtils.FORMAT_SHOW_TIME | DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_ABBREV_ALL);           // 显示最后更新的时间      refreshView.getLoadingLayoutProxy() .setLastUpdatedLabel(label);           //代表下拉刷新      if(refreshView.getHeaderLayout().isShown()){             new Thread(){        public void run() {         try {          sleep(1000);                   handler.sendEmptyMessage(99);                  } catch (InterruptedException e) {          e.printStackTrace();         }        };       }.start();      }           //代表下拉刷新      if(refreshView.getFooterLayout().isShown()){       new Thread(){        public void run() {         try {          sleep(1000);                   handler.sendEmptyMessage(98);                  } catch (InterruptedException e) {          e.printStackTrace();         }        };       }.start();      }         }   });     }    private Handler handler=new Handler(){   public void handleMessage(android.os.Message msg) {        if(msg.what==99){     numList.add(0, "英雄联盟");     arrayAdapter.notifyDataSetChanged();     //关闭刷新的动画     pullToRefreshListView.onRefreshComplete();    }        if(msg.what==98){     numList.add(numList.size(), "魔兽世界");     arrayAdapter.notifyDataSetChanged();     //关闭刷新的动画     pullToRefreshListView.onRefreshComplete();    }       };  };  }