How do do view controller transitions

To view controller transitions, you can refer to the session titled "Enhance your UI animations and transitions" from WWDC 2024. This session covers various aspects of transitions in both SwiftUI and UIKit.

For UIKit, the session provides detailed information on how to handle view controller transitions, including lifecycle and appearance callbacks. Here are some key points:

1. Zoom Transitions in UIKit:

   • To adopt zoom transitions, specify on the pushViewController that it would like to zoom.
   • Provide the view to use as a source of the zoom transition.
   • Use a stable identifier to fetch a view rather than capturing a view directly, which is important in cases where the source view may get reused, such as in a collection view.

   You can find more details in the chapter Zoom transitions in UIKit.

2. UIKit View Controller Lifecycle and Callbacks:

   • The session goes in-depth on how these new fluid transitions work with view controller lifecycle and appearance callbacks.
   • It emphasizes the importance of being ready for a new transition to start at any time and keeping temporary transition state to a minimum.

   For more information, refer to the chapter UIKit view controller life cycle and callbacks.

3. Additional Tips for UIKit:

   • Ensure your code works perfectly in the new world where push and pop transitions can begin at any time.
   • Reset any temporary transition state by viewDidAppear or viewDidDisappear.

   Additional tips can be found in the chapter Additional tips for UIKit.

For SwiftUI, the session also covers how to incorporate transitions and animations effectively. You can explore the chapter SwiftUI animation for more details.

If you are interested in creating custom visual effects with SwiftUI, you can refer to the session "Create custom visual effects with SwiftUI". This session discusses how to apply and chain transitions, as well as create custom transitions.

For more information on view transitions in SwiftUI, check out the chapter View transitions.

Relevant Sessions:

1. Enhance your UI animations and transitions
2. Create custom visual effects with SwiftUI