Android：检查NestedScrollView是在底部还是在顶部

Question

我正在使用NestedScrollView，我想检查NestedScrollView是在底部还是在顶部： - ）

有什么建议吗？ 谢谢！

Answer 1

ViewCompat.canScrollVertically(target, -1);

Answer 2

也许检查computeVerticalScrollOffset()是否在[0，computeVerticalScrollRange()/2]

中

Answer 3

创建一个SetOnScrollChangeListener

BottomSheet.SetOnScrollChangeListener(this);

侦听器接口的内部

  public void OnScrollChange(NestedScrollView v, int scrollX, int scrollY, int oldScrollX, int oldScrollY)
    {
        if (scrollY == 0)
        {
            //Do something here when ur scroll reached the bottom by scrolling up
        }

        if (scrollY == (v.getChildAt(0).getMeasuredHeight() - v.getMeasuredHeight()))
        {
            //Do something here when ur scroll reached top by scrolling down
        }
    }