1.先写布局文件
<android.support.v4.widget.SwipeRefreshLayout android:id="@+id/refresh" android:layout_width="match_parent" android:layout_height="wrap_content"> <android.support.v7.widget.RecyclerView android:id="@+id/my_recycler_view" android:scrollbars="vertical" android:layout_width="match_parent" android:layout_height="match_parent"/> </android.support.v4.widget.SwipeRefreshLayout>
2.mainactivity
public class MainActivity extends AppCompatActivity { private OkHttpHelper httpHelper =OkHttpHelper.getInstance(); private SwipeRefreshLayout swipeRefreshLayout; @ViewInject(R.id.tv) private TextView tv; private RecyclerView mRecyclerView; private ArrayList<String> mDatas=new ArrayList<>(); private MyAdapter myAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mRecyclerView = findViewById(R.id.my_recycler_view); initDatas(); myAdapter =new MyAdapter(mDatas); mRecyclerView.setAdapter(myAdapter); mRecyclerView.setLayoutManager(new LinearLayoutManager(this)); //mRecyclerView.setLayoutManager(new GridLayoutManager(this,4)); // mRecyclerView.setLayoutManager(new StaggeredGridLayoutManager(4,StaggeredGridLayoutManager.HORIZONTAL)); //配置分割线 mRecyclerView.addItemDecoration(new DividerItemDecoration(this,DividerItemDecoration.VERTICAL_LIST)); //事件监听 int size =mDatas.size(); //添加数据到头部 myAdapter.addData(size,"adddddddddd"); //删除数据 myAdapter.removeData(0); swipeRefreshLayout = findViewById(R.id.refresh); initRefreshLayout(); } private void initRefreshLayout(){ //转的圈圈的颜色 swipeRefreshLayout.setColorSchemeResources(R.color.colorPrimary); swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() { @Override public void onRefresh() { Log.d(TAG, "onRefresh: "+swipeRefreshLayout.isRefreshing()); new Handler().postDelayed(new Runnable() { @Override public void run() { for(int i=0;i<=10;i++){ myAdapter.addData(i,"new"+i); } myAdapter.notifyItemRangeChanged(0,10); mRecyclerView.scrollToPosition(0); //刷新完成,必须调用,否则会一直是圈圈转转的情况 swipeRefreshLayout.setRefreshing(false); } },2000); } }); } private static final String TAG = "MainActivity"; private void initDatas(){ mDatas.add("aa"); mDatas.add("cv"); mDatas.add("cv1"); mDatas.add("cv112"); mDatas.add("cv112"); mDatas.add("cv112"); mDatas.add("cv112"); mDatas.add("cv112"); mDatas.add("cv112"); mDatas.add("cv112"); mDatas.add("cv112"); mDatas.add("cv112"); mDatas.add("cv112"); mDatas.add("cv112"); } }