4

The app is crashing on iOS 13 versions only with crash details fetched from Firebase Crashlytics.

There are no specific details about the app location where the app is crashing. I have tried finding out about it, but not succeeded.

Fatal Exception: NSInvalidArgumentException -[WAKScrollView canBecomeFocused]: unrecognized selector sent to instance 0x283fc5e80


Fatal Exception: NSInvalidArgumentException
0  CoreFoundation                 0x1a534b5f0 __exceptionPreprocess
1  libobjc.A.dylib                0x1a506dbcc objc_exception_throw
2  CoreFoundation                 0x1a524fea8 -[NSOrderedSet initWithSet:copyItems:]
3  CoreFoundation                 0x1a534f694 ___forwarding___
4  CoreFoundation                 0x1a53515bc _CF_forwarding_prep_0
5  UIKitCore                      0x1a8ef0664 _UIFocusItemCanBecomeFocusedAndChildrenAreNotFocused
6  UIKitCore                      0x1a8f12a58 -[_UIFocusItemRegion initWithFrame:item:]
7  WebCore                        0x1dac31288 -[UIKitWebAccessibilityObjectWrapper(UIFocusConformance) _searchForFocusRegionsInContext:]
8  UIKitCore                      0x1a8f28ff4 -[_UIFocusMapSnapshot addRegionsInContainer:]
9  WebCore                        0x1dac311d4 -[UIKitWebAccessibilityObjectWrapper(UIFocusConformance) _searchForFocusRegionsInContext:]
10 UIKitCore                      0x1a8f28ff4 -[_UIFocusMapSnapshot addRegionsInContainer:]
11 UIKitCore                      0x1a9886828 -[UIView _addAccessibilityFocusContainersInRect:inCoordinateSpace:context:]
12 UIKitCore                      0x1a9886504 -[UIView _searchForFocusRegionsInContext:]
13 UIKitCore                      0x1a8f28ff4 -[_UIFocusMapSnapshot addRegionsInContainer:]
14 UIKitCore                      0x1a8f291c4 -[_UIFocusMapSnapshot addRegionsInContainers:]
15 UIKitCore                      0x1a98864e0 -[UIView _searchForFocusRegionsInContext:]
16 UIKitCore                      0x1a8f28ff4 -[_UIFocusMapSnapshot addRegionsInContainer:]
17 UIKitCore                      0x1a8f291c4 -[_UIFocusMapSnapshot addRegionsInContainers:]
18 UIKitCore                      0x1a98864e0 -[UIView _searchForFocusRegionsInContext:]
19 UIKitCore                      0x1a8f28ff4 -[_UIFocusMapSnapshot addRegionsInContainer:]
20 UIKitCore                      0x1a8f291c4 -[_UIFocusMapSnapshot addRegionsInContainers:]
21 UIKitCore                      0x1a98864e0 -[UIView _searchForFocusRegionsInContext:]
22 UIKitCore                      0x1a8f28ff4 -[_UIFocusMapSnapshot addRegionsInContainer:]
23 UIKitCore                      0x1a8f291c4 -[_UIFocusMapSnapshot addRegionsInContainers:]
24 UIKitCore                      0x1a98864e0 -[UIView _searchForFocusRegionsInContext:]
25 UIKitCore                      0x1a8f28ff4 -[_UIFocusMapSnapshot addRegionsInContainer:]
26 UIKitCore                      0x1a8f291c4 -[_UIFocusMapSnapshot addRegionsInContainers:]
27 UIKitCore                      0x1a98864e0 -[UIView _searchForFocusRegionsInContext:]
28 UIKitCore                      0x1a8f28ff4 -[_UIFocusMapSnapshot addRegionsInContainer:]
29 UIKitCore                      0x1a8f291c4 -[_UIFocusMapSnapshot addRegionsInContainers:]
30 UIKitCore                      0x1a98864e0 -[UIView _searchForFocusRegionsInContext:]
31 UIKitCore                      0x1a8f28ff4 -[_UIFocusMapSnapshot addRegionsInContainer:]
32 UIKitCore                      0x1a8f2888c -[_UIFocusMapSnapshot _capture]
33 UIKitCore                      0x1a8f27e38 -[_UIFocusMapSnapshot _initWithSnapshotter:mapArea:searchArea:]
34 UIKitCore                      0x1a8f29f2c -[_UIFocusMapSnapshotter captureSnapshot]
35 UIKitCore                      0x1a8f21754 -[_UIFocusMap _defaultFocusItemInEnvironment:limitScopeUsingFocusPreferences:]
36 UIKitCore                      0x1a8efbd84 -[_UIFocusEnvironmentPreferenceEnumerationContext _inferPreferencesForEnvironment:]
37 UIKitCore                      0x1a8efbb40 -[_UIFocusEnvironmentPreferenceEnumerationContext _resolvePreferredFocusEnvironments]
38 UIKitCore                      0x1a8efba80 -[_UIFocusEnvironmentPreferenceEnumerationContext prefersNothingFocused]
39 UIKitCore                      0x1a8efc550 _enumeratePreferredFocusEnvironments
40 UIKitCore                      0x1a8efc670 _enumeratePreferredFocusEnvironments
41 UIKitCore                      0x1a8efc670 _enumeratePreferredFocusEnvironments
42 UIKitCore                      0x1a8efc670 _enumeratePreferredFocusEnvironments
43 UIKitCore                      0x1a8efc670 _enumeratePreferredFocusEnvironments
44 UIKitCore                      0x1a8efc670 _enumeratePreferredFocusEnvironments
45 UIKitCore                      0x1a8efc670 _enumeratePreferredFocusEnvironments
46 UIKitCore                      0x1a8efc344 -[_UIFocusEnvironmentPreferenceEnumerator enumeratePreferencesForEnvironment:usingBlock:]
47 UIKitCore                      0x1a8efccc4 -[_UIDeepestPreferredEnvironmentSearch deepestPreferredFocusableItemForEnvironment:inFocusSystem:]
48 UIKitCore                      0x1a8f3af68 -[UIFocusUpdateContext _updateDestinationItemIfNeeded]
49 UIKitCore                      0x1a8f3ad48 -[UIFocusUpdateContext _destinationItemInfo]
50 UIKitCore                      0x1a8f3ac30 -[UIFocusUpdateContext nextFocusedItem]
51 UIKitCore                      0x1a8f2b96c -[UIFocusSystem updateFocusIfNeeded]
52 UIKitCore                      0x1a93ff94c _runAfterCACommitDeferredBlocks
53 UIKitCore                      0x1a93ef2f4 _cleanUpAfterCAFlushAndRunDeferredBlocks
54 UIKitCore                      0x1a941f744 _afterCACommitHandler
55 CoreFoundation                 0x1a52c8fb8 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__
56 CoreFoundation                 0x1a52c3eac __CFRunLoopDoObservers
57 CoreFoundation                 0x1a52c4328 __CFRunLoopRun
58 CoreFoundation                 0x1a52c3c34 CFRunLoopRunSpecific
59 GraphicsServices               0x1af40d38c GSEventRunModal
60 UIKitCore                      0x1a93f622c UIApplicationMain
61 MagicBox Learning              0x104718058 main + 14 (main.m:14)
62 libdyld.dylib                  0x1a514b800 start
koen
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Harsh Sharma
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  • Please add a [example] where you use `WKScrollView` (not `WAKScrollView`). – koen Jun 15 '20 at 15:07
  • Its WAKScrollView which is the Private class of WebKit. I got this log from Firebase Crashlytics. Since the logs are not mentioning any source code line, therefore it's difficult for me give the line of code where I feel that problem is coming. – Harsh Sharma Jun 15 '20 at 16:08
  • @HarshSharma did you found any solution to this I am also facing the same issue – iGagan Kumar Jun 22 '20 at 09:01
  • Can you share the lines of code where you use WAKScrollView, or anything related to it. – coder Jun 29 '20 at 06:19
  • One of my apps had this issue due to YTPlayerView which is used to play youtube videos in the app... Does your app use YTPlayerView? – Anush Shenoy Sep 03 '20 at 18:12
  • any solution ? i had crash to which contains webview – ALKIN ÇAKIRALAR Jan 13 '21 at 07:22

1 Answers1

2

We had this issue in our app if there was a bluetooth keyboard attached to the device, but only if the Settings->Accessibility->Keyboards->Full Keyboard Access setting was enabled. As soon as that was turned off there were not more crashes.

EionRobb
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