private void Init()
{
_mChildrenHeights = new SparseIntArray();
_mHeaderViewInfos = new List <FixedViewInfo>();
_mFooterViewInfos = new List <FixedViewInfo>();
base.SetClipChildren(false);
ScrollStateChanged += (sender, args) =>
{
if (_mOriginalScrollListener != null)
{
_mOriginalScrollListener.OnScrollStateChanged(args.View, args.ScrollState);
}
};
Scroll += (sender, args) =>
{
if (_mOriginalScrollListener != null)
{
_mOriginalScrollListener.OnScroll(args.View, args.FirstVisibleItem, args.VisibleItemCount, args.TotalItemCount);
}
// AbsListView#invokeOnItemScrollListener calls onScrollChanged(0, 0, 0, 0)
// on Android 4.0+, but Android 2.3 is not. (Android 3.0 is unknown)
// So call it with onScrollListener.
OnScrollChanged();
};
}
public override void OnScrollStateChanged(Android.Support.V7.Widget.RecyclerView recyclerView, int newState)
{
ScrollState listViewState = ScrollState.Idle;
switch (newState)
{
case ScrollStateDragging:
listViewState = ScrollState.TouchScroll;
break;
case ScrollStateIdle:
listViewState = ScrollState.Idle;
break;
case ScrollStateSettling:
listViewState = ScrollState.Fling;
break;
}
_scrollListener.OnScrollStateChanged(null, listViewState);
}