Android 使用SwipeRefreshLayout控件仿抖音做的视频下拉刷新效果

<android.support.v4.widget.SwipeRefreshLayout 
       android:id="@+id/sr1" 
       android:layout_width="match_parent" 
      android:layout_height="match_parent"> 
       <ListView 
         android:id="@+id/lv" 
         android:layout_width="match_parent" 
         android:layout_height="wrap_content"/> 
    </android.support.v4.widget.SwipeRefreshLayout> 

public class ListViewActivity extends AppCompatActivity implements SwipeRefreshLayout.OnRefreshListener { 
  private SwipeRefreshLayout swipeRefreshLayout; 
  private ListView listView; 
  private List<String> list; 
  private ArrayAdapter adapter; 
  @Override 
  protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_list_view); 
    swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.sr1); 
    swipeRefreshLayout.setOnRefreshListener(this); 
    list = new ArrayList<>(); 
    for(int i = 0;i<10;i++){
      list.add("这是第"+i+"个数据");
    }
    listView = (ListView) findViewById(R.id.lv); 
    adapter = new ArrayAdapter(this 
        , android.R.layout.simple_list_item_1 
        , android.R.id.text1 
        , list); 
    listView.setAdapter(adapter); 
  } 
  @Override 
  public void onRefresh() { 
    new Handler().postDelayed(new Runnable() { 
      @Override 
      public void run() { 
        swipeRefreshLayout.setRefreshing(false); 
        adapter.clear(); 
        list.add("这是第11个数据"); 
        adapter.notifyDataSetChanged(); 
      } 
    }, 1000); 
  } 
}