Can't initialize UIFocusUpdateContext - invalid parameter not satisfying: focusSystem (NSInternalInconsistencyException)

Number:rdar://FB11952501 Date Originated:17/01/2023
Status:Open Resolved:No
Product:UIKit Product Version:tvOS 14 or greater
Classification: Reproducible:Yes
Please provide a descriptive title for your feedback:
Can't initialize UIFocusUpdateContext - invalid parameter not satisfying: focusSystem (NSInternalInconsistencyException)

Which area are you seeing an issue with?

What type of feedback are you reporting?
Incorrect/Unexpected Behavior

Please describe the issue and what steps we can take to reproduce it:

Trying to initialize UIFocusUpdateContext object in Swift using UIFocusUpdateContext() but Xcode 14.2 displays the following error: Invalid parameter not satisfying: focusSystem (NSInternalInconsistencyException).

This error only occurs when I select tvOS 14 or greater as the target. It works fine when I select tvOS 13 or earlier.

Need to init UIFocusUpdateContext to be able to extend this class as a dummy class to use it to simulate focus changes in Unit Tests.

Development environment:
Xcode 12.4
Device targets (simulator):
tvOS 13.4 (works fine)
tvOS 14.5 (doesn’t work - get error)
tvOS 15.4 (doesn’t work - get error)
tvOS 16.0 (doesn’t work - get error)


I’ve noticed that the bug doesn’t happen when I run ALL target unit tests. It only happens when I run class tests or a specific test.

By marcel.mendes at Jan. 19, 2023, 12:34 p.m. (reply...)

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