See Also: UICollectionViewLayoutAttributes Members
Application developers who override this class in order to provide additional layout parameters should also override UICollectionReusableView.ApplyLayoutAttributes to apply them.
In order to get a layout attributes object for a subclass of this class, you must call UICollectionViewLayoutAttributes.CreateForCell`1 and specify the type of the subclass, like this:
C# Example
// A custom UICollectionViewLayoutAttributes class with one extra property public class CustomCollectionViewLayoutAttributes : UICollectionViewLayoutAttributes { public int SomeProperty { get; set; } public override NSObject Copy () { // It is required to override Copy, iOS will call this method to clone your object. var copy = (CustomCollectionViewLayoutAttributes) base.Copy (); copy.SomeProperty = SomeProperty; return copy; } } public class CircleLayout : UICollectionViewLayout { public override UICollectionViewLayoutAttributes LayoutAttributesForItem (NSIndexPath path) { var attributes = UICollectionViewLayoutAttributes.CreateForCell<CustomCollectionViewLayoutAttributes> (path); attributes.SomeProperty = 1; return attributes; } }
UIKit.UICollectionViewLayoutAttributes implements UIKit.IUIDynamicItem and thus can be used with UI Dynamics.