- del
- Delegate object used to define the methods registered using the "SetAnimationDidStopSelector".
This method is discouraged for applications targeting iOS 4+.
This method, with UIView.SetAnimationWillStartSelector and UIView.SetAnimationDidStopSelector allows the application developer to register a custom delegate object for animations created using the now-discouraged UIView.BeginAnimations / UIView.CommitAnimations method, rather than the preferred block-based animations.