短视频系统源码开发，下拉刷新控制的实现

<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
    android:id="@+id/srf_video_list"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/rv_little_video"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>

/**
 * 数据请求
 */
private void requestNewData() {
    if (!isLoadMoreData) {
        mRefreshView.setRefreshing(true);
    }

    isLoadingData = true;

    // 模拟网络请求，2秒后进行数据返回
    Log.e("PageIndex", String.valueOf(mLastProductIndex));
    mHandler.sendEmptyMessageDelayed(0, 2000);

}

/**
 * 模拟网络请求完毕，数据更新
 */
Handler mHandler = new Handler(new Handler.Callback() {
    @Override
    public boolean handleMessage(@NonNull Message msg) {
        onVideoListUpdate(VideoBean.getTikTokVideoList());
        return false;
    }
});

/**
 * 数据更新
 *
 * @param videoList 网络回调获取数据
 */
public void onVideoListUpdate(List<VideoBean> videoList) {
    isEnd = videoList == null || videoList.size() < 10;
    isLoadingData = false;
    if (mRefreshView != null && mRefreshView.isRefreshing()) {
        mRefreshView.setRefreshing(false);
    }
    if (videoList == null) {
        return;
    }
    mLastProductIndex += videoList.size();
    if (isLoadMoreData) {
        // 加载更多数据
        if (mLittleVideoAdapter != null) {
            mLittleVideoAdapter.addData(videoList);
        }
    } else {
        // 刷新数据
        isEnd = false;
        mLittleVideoAdapter.setNewData(videoList);
    }
}