iPad crash: Unexpected view controller change in Supplementary column

Question

Tiago Lira OP

Created Dec ’21

Replies 2

Boosts 0

Participants 2

I'm receiving repetitive crash logs related to the UISplitController supplementary collumn.

Fatal Exception: NSInternalInconsistencyException
Unexpected view controller change in Supplementary column for expanding <xxxx.CustomSplitViewController: 0x15bb0bf40>

I can't reproduce it and the logs have no reference at all to any of my code - I'm wondering if it can be somehow related to orientation changes.

Any help would be very appreciated.

Here is part of the crash log:

Fatal Exception: NSInternalInconsistencyException
0  CoreFoundation                 0x9904c __exceptionPreprocess
1  libobjc.A.dylib                0x15f54 objc_exception_throw
2  Foundation                     0x1306cc _userInfoForFileAndLine
3  UIKitCore                      0x991928 -[UISplitViewControllerPanelImpl panelController:separateSupplementaryViewControllerFromPrimaryViewController:]
4  UIKitCore                      0x96699c __54-[UIPanelController _expandWithTransitionCoordinator:]_block_invoke_4
5  UIKitCore                      0xb0d78 +[UIPanelController _withDisabledAppearanceTransitions:forVisibleDescendantsOf:perform:]
6  UIKitCore                      0xb0940 -[UIPanelController _withDisabledAppearanceTransitionsPerform:]
7  UIKitCore                      0x9668c0 __54-[UIPanelController _expandWithTransitionCoordinator:]_block_invoke_3
8  UIKitCore                      0x1c6a08 +[UIViewController _performWithoutDeferringTransitionsAllowingAnimation:actions:]
9  UIKitCore                      0x966814 __54-[UIPanelController _expandWithTransitionCoordinator:]_block_invoke_2
10 UIKitCore                      0x174268 +[UIView(Animation) performWithoutAnimation:]
11 UIKitCore                      0x966760 __54-[UIPanelController _expandWithTransitionCoordinator:]_block_invoke
12 UIKitCore                      0x26fc28 -[_UIViewControllerTransitionCoordinator _applyBlocks:releaseBlocks:]
13 UIKitCore                      0x529ae8 -[_UIViewControllerTransitionContext __runAlongsideAnimations]
14 UIKitCore                      0x4f49ac -[_UIWindowAnimationController animateTransition:]
15 UIKitCore                      0xb70dc -[UIWindow _adjustSizeClassesAndResizeWindowToFrame:]
16 UIKitCore                      0x23e408 -[UIWindow _resizeWindowFrameToSceneBoundsIfNecessary]
17 UIKitCore                      0x461bd8 -[UIWindow _sceneBoundsDidChange]
18 UIKitCore                      0x5802e8 -[_UIScenefbsSceneBasedMetricsCalculator _updateMetricsOnWindows:animated:]
19 UIKitCore                      0x2b9fcc -[UIWindowScene _computeMetricsForWindows:animated:]
20 UIKitCore                      0x2e98a8 -[UIWindowScene _computeMetrics:]
21 UIKitCore                      0x270350 +[BSAnimationSettings(UIKit) tryAnimatingWithSettings:actions:completion:]
22 UIKitCore                      0x1b2340 _UISceneSettingsDiffActionPerformChangesWithTransitionContext

And two full logs:

On iPadOS 15

On iPadOS 14

Boost

Answer 1

MobileTen OP

Dec ’21

Are you overriding any view will transition, should rotate, preferred orientation methods? Or performing any routines in view will appear or view will or did layout subviews? Read here: https://developer.apple.com/documentation/uikit/uisplitviewcontroller

0

Answer 2

Tiago Lira OP

Dec ’21

I'm just changing the preferredDisplayMode and preferredSplitBehavior on viewWillTransition. Not changing the child controllers. Do you think that could cause the issue?

0