Bug 7784 - UICollectionViewDelegate subclasses the wrong class
Summary: UICollectionViewDelegate subclasses the wrong class
Alias: None
Product: iOS
Classification: Xamarin
Component: General ()
Version: 6.0.x
Hardware: Macintosh Mac OS
: --- normal
Target Milestone: Untriaged
Assignee: Bugzilla
Depends on:
Reported: 2012-10-10 19:01 UTC by Pierce Boggan [MSFT]
Modified: 2012-10-11 16:15 UTC (History)
3 users (show)

Is this bug a regression?: ---
Last known good build:

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Description Pierce Boggan [MSFT] 2012-10-10 19:01:25 UTC
It should be a subclass of UIScrollViewDelegate.

Apple's Reference: https://developer.apple.com/library/ios/#documentation/UIKit/Reference/UICollectionViewDelegate_protocol/Reference/Reference.html
Our Reference: http://docs.go-mono.com/?link=T%3aMonoTouch.UIKit.UICollectionViewDelegate

Will be providing more detailed info later; may be creating issue with scroll events not firing when a UICollectionViewDelegate is wired up to a UICollectionView.
Comment 2 Sebastien Pouliot 2012-10-11 16:00:51 UTC
we can't use [baseType] but we can inherit and bring UIScrollViewDelegate members

 	public virtual void DecelerationEnded (UIScrollView scrollView);
 	public virtual void DecelerationStarted (UIScrollView scrollView);
 	public virtual void DidZoom (UIScrollView scrollView);
 	public virtual void DraggingEnded (UIScrollView scrollView, bool willDecelerate);
 	public virtual void DraggingStarted (UIScrollView scrollView);
 	public virtual void ScrollAnimationEnded (UIScrollView scrollView);
 	public virtual void Scrolled (UIScrollView scrollView);
 	public virtual void ScrolledToTop (UIScrollView scrollView);
 	public virtual bool ShouldScrollToTop (UIScrollView scrollView);
 	public virtual UIView ViewForZoomingInScrollView (UIScrollView scrollView);
 	public virtual void WillEndDragging (UIScrollView scrollView, System.Drawing.PointF velocity, ref System.Drawing.PointF targetContentOffset);
 	public virtual void ZoomingEnded (UIScrollView scrollView, UIView withView, float atScale);
 	public virtual void ZoomingStarted (UIScrollView scrollView, UIView view);

 	* MonoTouch.UIKit.UICollectionViewController
 	* MonoTouch.UIKit.UICollectionViewDelegate
 	* MonoTouch.UIKit.UICollectionViewSource

diff --git a/src/uikit.cs b/src/uikit.cs
index fac2994..f35fcc8 100644
--- a/src/uikit.cs
+++ b/src/uikit.cs
@@ -1257,7 +1257,7 @@ namespace MonoTouch.UIKit {
        [Since (6,0)]
        [BaseType (typeof (NSObject))]
-       interface UICollectionViewDelegate {
+       interface UICollectionViewDelegate : UIScrollViewDelegate {
                [Export ("collectionView:shouldHighlightItemAtIndexPath:")]
                bool ShouldHighlightItem (UICollectionView collectionView, NSIndexPath indexPath);
Comment 3 Sebastien Pouliot 2012-10-11 16:15:30 UTC
Fixed in
ios6: 19f717ce7235cebd99b50ec38dc0599729b2c9a0
master: bbb28dff82a113c429b2b08ff8ead6a5f2e7ee25