Android 原生下拉刷新SwipeRefreshLayout

XML 中配置：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/white"
    android:orientation="vertical">
    <android.support.v4.widget.SwipeRefreshLayout
        android:id="@+id/refresh"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <android.support.v7.widget.RecyclerView
            android:id="@+id/recycleView"
            android:layout_width="match_parent"
            android:layout_height="match_parent">
        </android.support.v7.widget.RecyclerView>
    </android.support.v4.widget.SwipeRefreshLayout>
</LinearLayout>

接下来是代码的实现：

private void initData(View view) {
        mDatas = new ArrayList<>();
        for (int i = 0; i < 10; i++) {
            mDatas.add(i+"");

        }
        final Myadapter mAdapter=new Myadapter();
        refreshLayout = view.findViewById(R.id.refresh);
        refreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                new Handler().postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        refreshLayout.setRefreshing(false);
                        mDatas.add("15");
                        mAdapter.notifyDataSetChanged();
                    }
                },2000);
            }
        });
        recycleView = (RecyclerView) view.findViewById(R.id.recycleView);
        recycleView.setLayoutManager(new LinearLayoutManager(getActivity()));
        recycleView.setAdapter(mAdapter);
        recycleView.addItemDecoration(new DividerItemDecoration(getActivity(), DividerItemDecoration.HORIZONTAL));

    }

    class Myadapter extends RecyclerView.Adapter<HomeFragment.MyViewHolder>{
        @Override
        public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            MyViewHolder holder = new MyViewHolder(LayoutInflater.from(getActivity()).inflate(R.layout.layout_item, parent, false));
            return holder;
        }

        @Override
        public void onBindViewHolder(MyViewHolder holder, int position) {
            holder.tv.setText(mDatas.get(position));
        }

        @Override
        public int getItemCount() {
            return mDatas.size();
        }
    }
    class MyViewHolder extends RecyclerView.ViewHolder {

        TextView tv;
        public MyViewHolder(View itemView) {
            super(itemView);
            tv = (TextView) itemView.findViewById(R.id.tv);

        }
    }