public void CollapseLevels(MotionEvent ev)
{
if (bsb.State == BottomSheetBehavior.StateExpanded)
{
Rect outRect = new Rect();
flSheet.GetGlobalVisibleRect(outRect);
if (!outRect.Contains((int)ev.RawX, (int)ev.RawY))
{
bsb.State = BottomSheetBehavior.StateCollapsed;
}
}
}