App crashes on iOS 14 GM (and beta versions) for EKCalendarChooser

Question

Created Sep ’20

Replies 6

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Participants 4

When I try to present EKCalendarChooser to display the calendars, the app crashes every time inside EventKit framework after the latest iOS 14 update. I was seeing this crash in Beta version and was hoping this would be fixed in iOS 14 GM but still the crash seems to be present.

The below is a simple code to present EKCalendarChooser. I have tried subclassing as well both the approaches work in iOS 13 and below and crashes in iOS 14 only -

Code Block let store = EKEventStore()
store.requestAccess(to: .reminder) { success, error in
    DispatchQueue.main.async {
        let chooser = EKCalendarChooser(selectionStyle: .multiple, displayStyle: .allCalendars, entityType: .reminder, eventStore: store)
        self.present(chooser, animated: true, completion: nil)
    }
}

The below is the crash report for the same in iOS 14 -

Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<EKFrozenReminderCalendar 0x600003724960> valueForUndefinedKey:]: this class is not key value coding-compliant for the key publishURL.'

* First throw call stack:

(

0 CoreFoundation 0x000000010d35a4b2 _exceptionPreprocess + 242

1 libobjc.A.dylib 0x000000010b3cd26e objcexceptionthrow + 48

2 CoreFoundation 0x000000010d35a153 -[NSException init] + 0

3 Foundation 0x000000010aebfad8 -[NSObject(NSKeyValueCoding) valueForUndefinedKey:] + 225

4 Foundation 0x000000010aebe86e -[NSObject(NSKeyValueCoding) valueForKey:] + 317

5 EventKit 0x000000010b4d6042 -[EKObject(Shared) singleChangedValueForKey:] + 457

6 EventKit 0x000000010b4e4e84 -[EKCalendar publishURL] + 44

7 EventKitUI 0x000000010b707e4b -[EKCalendarInfo isPublished] + 23

8 EventKitUI 0x000000010b829ee7 -[EKCalendarChooser tableView:cellForRowAtIndexPath:] + 1342

9 UIKitCore 0x000000011f5b1e6a -[UITableView createPreparedCellForGlobalRow:withIndexPath:willDisplay:] + 866

10 UIKitCore 0x000000011f57b80c -[UITableView updateVisibleCellsNow:] + 2971

11 UIKitCore 0x000000011f59b52b -[UITableView layoutSubviews] + 194

12 UIKitCore 0x000000011f8d6269 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 2465

13 QuartzCore 0x000000011a225357 -[CALayer layoutSublayers] + 258

14 QuartzCore 0x000000011a22b809 ZN2CA5Layer16layoutifneededEPNS11TransactionE + 575

15 UIKitCore 0x000000011f8c1c39 -[UIView(Hierarchy) layoutBelowIfNeeded] + 573

16 UIKitCore 0x000000011eb54703 -[UISheetPresentationController sheetLayoutInfoLayout:] + 48

17 UIKitCore 0x000000011eb51850 -[UISheetLayoutInfo layout] + 360

18 UIKitCore 0x000000011eb56580 54-[UISheetPresentationController transitionWillBegin:]blockinvoke2 + 52

19 UIKitCore 0x000000011f8c90c9 +[UIView(Animation) performWithoutAnimation:] + 84

20 UIKitCore 0x000000011eb564bd 54-[UISheetPresentationController transitionWillBegin:]blockinvoke.358 + 120

21 UIKitCore 0x000000011ec8fc82 -[UIViewControllerTransitionCoordinator applyBlocks:releaseBlocks:] + 294

22 UIKitCore 0x000000011ec8c13d -[UIViewControllerTransitionContext runAlongsideAnimations] + 263

23 UIKitCore 0x000000011f8c8ef2 63+[UIView(Animation) setAlongsideAnimations:toRunByEndOfBlock:]blockinvoke + 16

24 UIKitCore 0x000000011f89aa94 -[UIViewAnimationState _runAlongsideAnimations] + 24

25 UIKitCore 0x000000011f899897 -[UIViewAnimationState pop] + 37

Also, the crash happens only when entityType is reminder. It works fine for event.

Can someone please help me with any workaround for this, since calendar selection is the main feature within our app.

Boost

Answer 1

varunpm OP

Sep ’20

Also, the crash happens only when entityType is reminder. It works fine for event.

0

Answer 2

Steve T OP

Sep ’20

Yes we are seeing the same issue.

I had reported this to Apple about 3 beta versions ago and still no fix in the GM.

P.S.
Nice for developers to get a massive 24 hours with the GM before iOS 14 gets released to the general public!!!!
Absolutely no time for final testing and getting iOS 14 built updates through app review!!!!!!!!!!!!!!
There aren't going to be any new style Widgets for iOS 14 people to set up (other than Apple native ones).
Have Apple thought this one through properly...

0

Answer 3

DTS Engineer OP

Apple

Sep ’20

I had reported this to Apple about 3 beta versions ago and still no
fix in the GM.

What was your bug number?

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@apple.com"

0

Answer 4

varunpm OP

Sep ’20

What was your bug number?

I had also raised a bug for the same in GM seed version. The bug number for GM version is - 8698771

0

Answer 5

DTS Engineer OP

Apple

Sep ’20

The bug number for GM version is - FB8698771

Thanks for that.

It’s possible that you’re hitting a known bug here (r. 67882969). It’s not fixed in the current iOS 14.2 beta so I recommend that you continue to test with 14.2 beta seeds as they are released.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@apple.com"

0

Answer 6

DTS Engineer OP

Apple

Jan ’22

but was there a resolution for this?

The specific bug mentioned above (r. 67882969) was reported as fixed in iOS 14.2. Of course there’s no guarantee that the patch stuck, or that the problem you’re seeing is exactly the same issue.

Looks like this may still be happening in ios 15.2 xcode 13.2.1

Please post an Apple crash report of the problem. See Posting a Crash Report for hints and tips on how to do that.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

0