UICollectionView Cells not displaying (MonoTouch/Xamarin) - ios

Question

Working with a UICollectionView in Xamarin just as I have before but running into a strange problem -- When the view containing the collection loads, I see the cells for a short moment and then they disappear. I double checked the ContentSize of the CollectionView and apparently it's defaulting to 0 width, 0 height but setting it manually doesn't seem to solve the problem. The CollectionView seems to stick around (if I set the background color to black I see a black View in the parent) but the cells are disappearing
Parent View (UIView subclass):
UICollectionViewFlowLayout layout = new UICollectionViewFlowLayout ();
layout.ItemSize = new SizeF (274, 281);
layout.MinimumInteritemSpacing = 3;
layout.ScrollDirection = UICollectionViewScrollDirection.Horizontal;
var haulCollection = new HaulCollectionController(layout);
haulCollection.CollectionView.Frame = new RectangleF (0, cellHeader.Frame.Bottom, cellHeader.Frame.Width, 281);
AddSubview(haulCollection.CollectionView);
UICollectionViewController:
public class HaulCollectionController : UICollectionViewController
{
public HaulCollectionController (UICollectionViewLayout layout) : base (layout)
{
}
public override void ViewDidLoad ()
{
base.ViewDidLoad ();
CollectionView.BackgroundColor = UIColor.Clear;
CollectionView.RegisterClassForCell (typeof(HaulCollectionCell), HaulCollectionCell.Key);
}
public override int NumberOfSections (UICollectionView collectionView)
{
return 1;
}
public override int GetItemsCount (UICollectionView collectionView, int section)
{
return 6;
}
public override UICollectionViewCell GetCell (UICollectionView collectionView, NSIndexPath indexPath)
{
var cell = collectionView.DequeueReusableCell (HaulCollectionCell.Key, indexPath) as HaulCollectionCell;
return cell;
}
public override bool ShouldHighlightItem (UICollectionView collectionView, NSIndexPath indexPath)
{
return false;
}
}
UICollectionViewCell:
public class HaulCollectionCell : UICollectionViewCell
{
public static readonly NSString Key = new NSString ("HaulCollectionCell");
public UILabel Retailer { get; set; }
public UILabel Brand { get; set; }
public UILabel ItemName { get; set; }
[Export ("initWithFrame:")]
public HaulCollectionCell (RectangleF frame) : base (frame)
{
BackgroundColor = UIColor.Cyan;
var infoOverlay = new UIView (new RectangleF(0, Frame.Height-60, Frame.Width, 55)) {
BackgroundColor = UIColor.FromRGBA(255, 255, 255, 153)
};
Retailer = new UILabel (new RectangleF(15,10,100,22)) {
Font = ViewHelpers.GetFont(20, false),
Text = "DICK'S"
};
Brand = new UILabel (new RectangleF(Retailer.IntrinsicContentSize.Width + 10, 10, 100,22)) {
Font = ViewHelpers.GetFont(20, true),
Text = "Nike"
};
ItemName = new UILabel (new RectangleF(15, Brand.Frame.Bottom + 5, 200,30)) {
Font = ViewHelpers.GetFont(26, false),
Text = "Windrunner Tech Fleece"
};
infoOverlay.AddSubviews (Retailer,Brand,ItemName);
ContentView.Add (infoOverlay);
}
}
can't figure out exactly why I can't get the cells to display...