Android SwipeRefreshLayout下拉刷新组件示例

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@+id/v7_refresh"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="@color/back">

  <android.support.v7.widget.RecyclerView
    android:id="@+id/v7_recyclerView"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

</android.support.v4.widget.SwipeRefreshLayout>

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView 
  xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  android:id="@+id/cardview"
  app:cardCornerRadius="5dp"
  app:cardBackgroundColor="@android:color/white"
  android:layout_margin="5dp"
  android:layout_height="60dp"
  android:layout_width="match_parent">

    <TextView
    android:id="@+id/menuitem_tv"
    android:layout_gravity="center"
    android:text="@string/app_name"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

</android.support.v7.widget.CardView>

public class MainActivity extends AppCompatActivity {

  private SwipeRefreshLayout swipeRefreshLayout;

  private RecyclerView recyclerView;

  private List<String> list=null;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main_activity);
    initView();
  }
  private void initView()
  {
    swipeRefreshLayout=(SwipeRefreshLayout)findViewById(R.id.v7_refresh);
    recyclerView=(RecyclerView)findViewById(R.id.v7_recyclerView);
    //设置下拉圆圈的大小，两个值 LARGE， DEFAULT
    swipeRefreshLayout.setSize(SwipeRefreshLayout.LARGE);
    // 设定下拉圆圈的背景:默认white
    // swipeRefreshLayout.setProgressBackgroundColor(android.R.color.white);
    initData();
  }
  private void initData()
  {
    bindData();
    //设置刷新时动画的颜色，可以设置4个
    swipeRefreshLayout.setColorSchemeResources(android.R.color.holo_blue_light, android.R.color.holo_red_light, android.R.color.holo_orange_light, android.R.color.holo_green_light);
    swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {

      @Override
      public void onRefresh() {
        Toast.makeText (MainActivity.this,"正在刷新",Toast.LENGTH_LONG).show();
        // TODO Auto-generated method stub
        new Handler().postDelayed(new Runnable() {

          @Override
          public void run() {
            // TODO Auto-generated method stub
            Toast.makeText (MainActivity.this,"刷新完成",Toast.LENGTH_LONG).show();
            swipeRefreshLayout.setRefreshing(false);
          }
        }, 4000);
      }
    });

  }

  private void bindData(){
    list=new ArrayList<>();
    for(int i=0;i<22;i++){
      list.add("Item"+(i+1));
    }
    recyclerView.setLayoutManager(new LinearLayoutManager(this));
    recyclerView.setHasFixedSize(true);
    recyclerView.setItemAnimator(new DefaultItemAnimator());
    MenuAdapter menuAdapter=new MenuAdapter(this,R.layout.item,list);
    recyclerView.setAdapter(menuAdapter);
    menuAdapter.setOnItemClickListener(new CommonRecyclerAdapter.OnItemClickListener() {
      @Override
      public void onItemClick(RecyclerView.ViewHolder viewHolder, View view, int position) {

        Toast.makeText (MainActivity.this, list.get(position),Toast.LENGTH_LONG).show();

      }
    });
  }
}