public StickyHeaderScrollView(Context context, View header, int minHeightHeader, HeaderAnimator headerAnimator, ScrollView scrollView)
: base(context, header, scrollView, minHeightHeader, headerAnimator)
{
// scroll events
scrollView.ViewTreeObserver.AddOnGlobalLayoutSingleFire(() => headerAnimator.OnScroll(-scrollView.ScrollY));
scrollView.ViewTreeObserver.ScrollChanged += (sender, e) => headerAnimator.OnScroll(-scrollView.ScrollY);
}
public StickyHeaderListView(Context context, View header, int minHeightHeader, HeaderAnimator headerAnimator, ListView listView)
: base(context, header, listView, minHeightHeader, headerAnimator)
{
// fake header
var lp = new AbsListView.LayoutParams(ViewGroup.LayoutParams.MatchParent, heightHeader);
fakeHeader = new Space(context)
{
LayoutParameters = lp
};
this.listView.AddHeaderView(fakeHeader);
// scroll events
this.listView.Scroll += (sender, e) =>
{
var scrolledY = -CalculateScrollYList();
headerAnimator.OnScroll(scrolledY);
};
}