获取RecyclerView滑动的距离

如果LayoutManager用的是LinearLayoutManager，强烈推荐下面的方法获取滑动距离

private int getScollYDistance() {    LinearLayoutManager layoutManager = (LinearLayoutManager) mRecylerview.getLayoutManager();    int position = layoutManager.findFirstVisibleItemPosition();    View firstVisiableChildView = layoutManager.findViewByPosition(position);    int itemHeight = firstVisiableChildView.getHeight();    return (position) * itemHeight - firstVisiableChildView.getTop();}