public override void OnScrollStateChanged(RecyclerView recyclerView, int newState)
{
base.OnScrollStateChanged(recyclerView, newState);
var state = (ScrollState)newState;
var x = _recyclerView.GetHorizontalScrollOffset() / _density;
var y = _startScrollPosition / _density;
if (_lastState == ScrollState.Idle && (state == ScrollState.TouchScroll || state == ScrollState.Fling))
{
_startScrollPosition = _recyclerView.GetVerticalScrollOffset();
}
if (state == ScrollState.TouchScroll || state == ScrollState.Fling)
{
_fastGridView.RaiseOnStartScroll(x, y,
state == ScrollState.TouchScroll ? ScrollActionType.Finger : ScrollActionType.Fling);
}
if (_lastState == ScrollState.TouchScroll && (state == ScrollState.Fling || state == ScrollState.Idle))
{
_fastGridView.RaiseOnStopScroll(x, y, ScrollActionType.Finger, state == ScrollState.Idle);
}
if (_lastState == ScrollState.Fling && state == ScrollState.Idle)
{
_fastGridView.RaiseOnStopScroll(x, y, ScrollActionType.Fling, true);
}
_lastState = state;
}
void GetScrollPosition(object obj)
{
var func = obj as Func <Point, object>;
if (func == null)
{
return;
}
var point = new Point(_recyclerView.GetHorizontalScrollOffset() / _density,
_recyclerView.GetVerticalScrollOffset() / _density);
func.Invoke(point);
}
