Is UIScreen.main.bounds valid on iPhone Duo?

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This post is from the Activity iPhone Duo UIKit Q&A.

During a fold, UIScreen.main.bounds stays at the outer-display size while window.windowScene?.screen.bounds updates. Layout that still reads UIScreen.main (sheet heights, map padding, title widths) is wrong on the inner display. Should apps stop using UIScreen.main entirely and always read the window scene’s screen?

Answer 1

Frameworks Engineer OP

Apple

6h

The recommendation is always to use the most local layout information you can use. While reading from a window or its scene's bounds is less problematic than reading from the main screen, if you can get the same information from a specific view in your view hierarchy, that is the guidance that will be given.