protected override void Dispose(bool disposing)
{
if (_disposed)
{
return;
}
if (disposing)
{
RecyclerView?.StopScroll();
RecyclerView?.SetAdapter(null);
RecyclerView?.RemoveItemDecoration(_itemDecoration);
_gridLayoutManager?.SetSpanSizeLookup(null);
_spanSizeLookup?.Dispose();
_spanSizeLookup = null;
_itemDecoration?.Dispose();
_itemDecoration = null;
}
_disposed = true;
base.Dispose(disposing);
}
protected override void OnElementChanged(ElementChangedEventArgs <CollectionView> e)
{
base.OnElementChanged(e);
if (e.NewElement != null)
{
if (RecyclerView == null)
{
RecyclerView = new RecyclerView(Context);
_refresh = new SwipeRefreshLayout(Context);
_refresh.SetOnRefreshListener(this);
_refresh.AddView(RecyclerView, LayoutParams.MatchParent, LayoutParams.MatchParent);
SetNativeControl(_refresh);
}
LayoutManager = new GridLayoutManager(Context, 2);
_spanSizeLookup = new CollectionViewSpanSizeLookup(this);
_gridLayoutManager.SetSpanSizeLookup(_spanSizeLookup);
RecyclerView.Focusable = false;
RecyclerView.DescendantFocusability = Android.Views.DescendantFocusability.AfterDescendants;
RecyclerView.OnFocusChangeListener = this;
RecyclerView.SetClipToPadding(false);
_itemDecoration = new GridCollectionItemDecoration(this);
RecyclerView.AddItemDecoration(_itemDecoration);
Adapter = new CollectionViewAdapter(Context, _gridCollectionView, RecyclerView, this);
RecyclerView.SetAdapter(Adapter);
RecyclerView.SetLayoutManager(_gridLayoutManager);
Adapter.IsAttachedToWindow = IsAttached;
UpdateGroupHeaderHeight();
UpdatePullToRefreshEnabled();
UpdatePullToRefreshColor();
}
}
