iOS 13 [TraitCollection] log messages

Question

Created Jun ’19

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I get the following 3 new Xcode log messages with iOS 13 on launch (during application didFinishLaunchingWithOptions). Running on iPhone (not simulator). I assume this is just beta noise?

[TraitCollection] Class _UISheetPresentationController overrides the -traitCollection getter, which is not supported. If you're trying to override traits, you must use the appropriate API.

[TraitCollection] Class _UIRootPresentationController overrides the -traitCollection getter, which is not supported. If you're trying to override traits, you must use the appropriate API.

[TraitCollection] Class UIPopoverPresentationController overrides the -traitCollection getter, which is not supported. If you're trying to override traits, you must use the appropriate API.

Answered by lmDeveloper1 in 367191022

i believe you can ignore these as stated in ios 12 beta 2 release notes:

"When running your app from Xcode, you might see console errors about UIKit classes that override the

traitCollection

getter. You can safely ignore these messages for system classes. If you see this error message for your own classes, it likely indicates a real issue for you to fix. (51651561)"

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Answer 1

lmDeveloper1 OP

Jun ’19

Accepted Answer

i believe you can ignore these as stated in ios 12 beta 2 release notes:

"When running your app from Xcode, you might see console errors about UIKit classes that override the

traitCollection

getter. You can safely ignore these messages for system classes. If you see this error message for your own classes, it likely indicates a real issue for you to fix. (51651561)"

1

Answer 2

billypoydar OP

Sep ’20

I'm still encountering this issue with iOS 14 developer beta 8.

2

Answer 3

DeveloperSammy OP

Nov ’20

I still get this on all my Simulators, iOS14.2. Not on my real devices, iPad Pro 2015 and iPhone XR ...

1

Answer 4

Linasses OP

Feb ’21

Still happening for CKBrowserSwitcherViewController in iOS 14.4 on iPhone XII.

0

Answer 5

guitaripod OP

May ’21

Still getting this Xcode 12.4

0

Answer 6

ingconti_at_me_dot_com OP

May ’23

same for me after 2 years.. now under catalyst. in iOS works fine.

[TraitCollection] Class _UIFindNavigatorViewController overrides the -traitCollection getter, which is not supported. If you're trying to override traits, you must use the appropriate API.

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