android使用SwipeRefreshLayout实现ListView下拉刷新上拉加载

<?xml version="1.0" encoding="utf-8"?> 
<android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 android:layout_width="match_parent" 
 android:layout_height="match_parent" 
 android:id="@+id/srfl"> 
 
 <ListView 
  android:layout_width="match_parent" 
  android:layout_height="match_parent" 
  android:id="@+id/listview" /> 
</android.support.v4.widget.SwipeRefreshLayout> 

public class MainActivity extends Activity { 
 private ListView mListView; 
 private SwipeRefreshLayout swipeRefreshLayout; 
 private List<String> stringList=new ArrayList<>(); 
 private ArrayAdapter<String> adapter; 
 @Override 
 protected void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  setContentView(R.layout.activity_main); 
   
  for (int x=0 ; x<16;x++){ 
   stringList.add("新浪微博：搏击爱好者Z"+"---"+x); 
  } 
  initView(); 
 } 
 
 private void initView() { 
  swipeRefreshLayout= (SwipeRefreshLayout) findViewById(R.id.srfl); 
  //设置进度圈的大小;(这里面只有两个值SwipeRefreshLayout.LARGE和DEFAULT，后者是默认效果) 
  swipeRefreshLayout.setSize(SwipeRefreshLayout.LARGE); 
  //设置进度圈的背景色。这里随便给他设置了一个颜色：浅绿色 
  swipeRefreshLayout.setProgressBackgroundColorSchemeColor(Color.CYAN); 
  //设置进度动画的颜色。这里面最多可以指定四个颜色，我这也是随机设置的，大家知道怎么用就可以了 
  swipeRefreshLayout.setColorSchemeResources(android.R.color.holo_orange_dark 
    ,android.R.color.holo_blue_dark 
    ,android.R.color.holo_red_dark 
    ,android.R.color.widget_edittext_dark); 
  mListView= (ListView) findViewById(R.id.listview); 
  adapter = new ArrayAdapter<>(MainActivity.this, android.R.layout.simple_list_item_1, stringList); 
  mListView.setAdapter(adapter); 
 
  //设置手势滑动监听器 
  swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() { 
   public void onRefresh() { 
    //发送一个延时1秒的handler信息 
    handler.sendEmptyMessageDelayed(199,1000); 
   } 
  }); 
 
  //给listview设置一个滑动的监听 
  mListView.setOnScrollListener(new AbsListView.OnScrollListener() { 
   //当滑动状态发生改变的时候执行 
   public void onScrollStateChanged(AbsListView view, int scrollState) { 
    switch (scrollState){ 
     //当不滚动的时候 
     case AbsListView.OnScrollListener.SCROLL_STATE_IDLE: 
 
      //判断是否是最底部 
      if(view.getLastVisiblePosition()==(view.getCount())-1){ 
       for(int x=0;x<5;x++){ 
        stringList.add(stringList.size(),"魔兽世界"+x); 
       } 
       adapter.notifyDataSetChanged(); 
      } 
      break; 
    } 
   } 
   //正在滑动的时候执行 
   public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { 
   } 
  }); 
 } 
 
 private Handler handler=new Handler(){ 
  @Override 
  public void handleMessage(Message msg) { 
   if(msg.what==199){ 
    stringList.add(0,"英雄联盟"); 
    adapter.notifyDataSetChanged(); 
    //设置组件的刷洗状态；false代表关闭 
    swipeRefreshLayout.setRefreshing(false); 
   } 
  } 
 }; 
}