Skip to main content

Apple Developer Docs

Fonts Symbols

Core Animation / CAAnimation / delegate

Contents

Declaration
Discussion

delegate

Specifies the receiver’s delegate object.

Declaration

var delegate: (any CAAnimationDelegate)? { get set }

Discussion

Defaults to nil.

important:

The delegate object is retained by the receiver. This is a rare exception to the memory management rules described in Advanced Memory Management Programming Guide.

An instance of CAAnimation should not be set as a delegate of itself. Doing so (outside of a garbage-collected environment) will cause retain cycles.

Open on developer.apple.com

Core AnimationInstance Property

iOS 2.0+iPadOS 2.0+Mac Catalyst 13.1+macOS 10.5+tvOS 9.0+visionOS 1.0+

Declaration
Discussion

Built on 2026-05-07