public override void ViewDidLoad()
{
base.ViewDidLoad();
//Calculate Cell Size for screen resolution
CGSize CellSize = GetSize();
/*
* Initialize the collectionview layout
*/
UICollectionViewFlowLayout layout = new UICollectionViewFlowLayout
{
SectionInset = new UIEdgeInsets(20, 20, 20, 20),
MinimumInteritemSpacing = 1,
MinimumLineSpacing = 10,
ItemSize = CellSize //new SizeF(110, 110)
};
/*
* Initialize the CollectionViewSource and UICollectionView
*/
CollectionViewSource = new CollectionViewImageStackSource();
CollectionViewSource.ImageViewSize = new SizeF((float)CellSize.Width, (float)CellSize.Height);
CollectionView = new UICollectionView(UIScreen.MainScreen.Bounds, layout);
CollectionView.BackgroundColor = AppColors.LIGHT_TEAL;
var longPressGesture = new UILongPressGestureRecognizer(gesture =>
{
// Take action based on state
switch (gesture.State)
{
case UIGestureRecognizerState.Began:
var selectedIndexPath = CollectionView.IndexPathForItemAtPoint(gesture.LocationInView(View));
if (selectedIndexPath != null)
{
CollectionView.BeginInteractiveMovementForItem(selectedIndexPath);
}
break;
case UIGestureRecognizerState.Changed:
CollectionView.UpdateInteractiveMovement(gesture.LocationInView(View));
break;
case UIGestureRecognizerState.Ended:
CollectionView.EndInteractiveMovement();
break;
default:
CollectionView.CancelInteractiveMovement();
break;
}
});
// Add the custom recognizer to the collection view
CollectionView.AddGestureRecognizer(longPressGesture);
CollectionView.ShowsHorizontalScrollIndicator = true;
CollectionView.RegisterClassForCell(typeof(UserCell2), UserCell2.CellID);
CollectionView.ShowsHorizontalScrollIndicator = true;
CollectionView.Source = CollectionViewSource;
}