public override UICollectionViewCell GetCell(UICollectionView collectionView, NSIndexPath indexPath)
{
ModelItem item = this.items[(int)indexPath.Item];
CollectionCell cell = null;
if (item.picture != null)
{
cell = (CollectionCell)collectionView.DequeueReusableCell("CollectionImageCell", indexPath);
}
else
{
cell = (CollectionCell)collectionView.DequeueReusableCell("CollectionCell", indexPath);
}
if (cell == null)
{
cell = (CollectionCell) new UICollectionViewCell();
}
if (item.value != null)
{
cell.setText(item.value.ToString());
}
else
{
cell.setText(string.Empty);
}
if (item.picture != null)
{
cell.setPicture(item.picture);
}
return(cell);
}
public void HandleTableLongPress(NSObject _sender)
{
UILongPressGestureRecognizer sender = (UILongPressGestureRecognizer)_sender;
CGPoint tapLocation = sender.LocationInView(this.View);
UIView hitView = this.View.HitTest(tapLocation, null);
switch (sender.State)
{
case UIGestureRecognizerState.Began:
{
Console.WriteLine("Gesture Began");
if (hitView.GetType() == typeof(MyCollectionView))
{
sourceCollection = (MyCollectionView)hitView;
sourceIndexPath = sourceCollection.IndexPathForItemAtPoint(sender.LocationInView(sourceCollection));
if (sourceIndexPath == null)
{
sender.Enabled = false;
sender.Enabled = true;
Console.WriteLine("Tap location does not point to any cell");
return;
}
CollectionCell sourceCell = (CollectionCell)sourceCollection.CellForItem(sourceIndexPath);
sourceCell.Alpha = 0.25f;
// NSData cellViewMirrorData = NSKeyedArchiver.ArchivedDataWithRootObject(sourceCell);
// this.draggableView = (UIView)NSKeyedUnarchiver.UnarchiveObject(cellViewMirrorData);
this.draggableView = sourceCell.SnapshotView(true);
this.draggableView.Center = tapLocation;
this.draggableView.Alpha = 0.5f;
this.draggableView.Hidden = false;
this.View.AddSubview(this.draggableView);
}
}
break;
case UIGestureRecognizerState.Changed:
{
this.draggableView.Center = tapLocation;
}
break;
case UIGestureRecognizerState.Ended:
{
Console.WriteLine("Gesture Ended");
this.draggableView.RemoveFromSuperview();
this.draggableView.Dispose();
this.draggableView = null;
tapLocation = sender.LocationInView(this.View);
hitView = this.View.HitTest(tapLocation, null);
CollectionCell sourceCell = (CollectionCell)sourceCollection.CellForItem(sourceIndexPath);
if (hitView.GetType() != typeof(MyCollectionView) || hitView.IsEqual(sourceCollection))
{
Console.WriteLine("Drop location does not point to any collection");
sourceCell.Alpha = 1.0f;
return;
}
MyCollectionView destinationCollection = (MyCollectionView)hitView;
ModelItem item = ((CollectionViewDataSource)sourceCollection.DataSource).items[(int)sourceIndexPath.Item];
NSIndexPath destinationIndexPath = destinationCollection.IndexPathForItemAtPoint(sender.LocationInView(destinationCollection));
((CollectionViewDataSource)destinationCollection.DataSource).addItemAtIndexPath(item, destinationIndexPath);
((CollectionViewDataSource)sourceCollection.DataSource).removeItemAtIndexPath(sourceIndexPath);
}
break;
case UIGestureRecognizerState.Cancelled:
{
Console.WriteLine("Gesture Cancelled");
if (this.draggableView != null)
{
this.draggableView.RemoveFromSuperview();
this.draggableView.Dispose();
this.draggableView = null;
}
if (sourceIndexPath != null)
{
CollectionCell sourceCell = (CollectionCell)sourceCollection.CellForItem(sourceIndexPath);
sourceCell.Alpha = 1.0f;
}
}
break;
}
}