updateTraitsIfNeeded
Asked on 04/07/2025
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The updateTraitsIfNeeded function is not explicitly mentioned in the provided context. However, the context does discuss updates to the trait system in UIKit, particularly in iOS 18. The trait system in UIKit now supports automatic trait tracking, which simplifies handling changes in traits by automatically performing invalidations like setNeedsLayout or setNeedsDisplay when traits change. This feature is always active within support update methods, making it easier to manage trait changes without manual registration.
For more details on this topic, you can refer to the session What’s new in UIKit (06:02).
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