What is Core Animation?

Generated on 8/1/2024

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Core Animation (CA) is a powerful graphics rendering and animation infrastructure used in iOS and macOS to animate the visual content of applications. It allows developers to create smooth and complex animations with minimal code. Core Animation works by animating the properties of layers, which are lightweight objects that represent visual content and are managed by the system.

In the context of the WWDC 2024 sessions, Core Animation is mentioned in relation to UIKit and SwiftUI animations. Specifically, the existing UIKit API generates a CA animation, which is then added to the view's layer. This is contrasted with SwiftUI animations, which do not create CA animations but instead animate the view's layer's presentation values directly.

For more details on how Core Animation integrates with UIKit and SwiftUI, you can refer to the session Enhance your UI animations and transitions at the 08:34 mark.