I have implemented UIPageViewController with a list of view controllers. But in some rare cases, facing crash in the UIKitCore when coming to the last viewcontroller. This doesn't happen always.
Attached the screenshot of the the crash stack trace.
Random crash in UIPageViewController when swiping to the last page in the list of view controllers
What is this screenshot ? It is 3.3.2 beta of what ? It would be really helpful to see the code where the crash occurs.
Can you please also post the full exception message that you get?
Here is the full exception log (This happen when curl transition is set and we try to swipe up/down at first page)
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'The number of view controllers provided (0) doesn't match the number required (1) for the requested transition' *** First throw call stack: ( 0 CoreFoundation 0x00007ff8004ca369 __exceptionPreprocess + 242 1 libobjc.A.dylib 0x00007ff80008c106 objc_exception_throw + 62 2 CoreFoundation 0x00007ff8004ca247 -[NSException initWithCoder:] + 0 3 UIKitCore 0x00007ff80590b01c -[UIPageViewController _validatedViewControllersForTransitionWithViewControllers:animated:] + 538 4 UIKitCore 0x00007ff80590ba4c -[UIPageViewController _setViewControllers:withCurlOfType:fromLocation:direction:animated:notifyDelegate:completion:] + 599 5 UIKitCore 0x00007ff80590f16f -[UIPageViewController _handlePanGesture:] + 309 6 UIKitCore 0x00007ff805d57df0 -[UIGestureRecognizerTarget _sendActionWithGestureRecognizer:] + 71 7 UIKitCore 0x00007ff805d60e6b _UIGestureRecognizerSendTargetActions + 100 8 UIKitCore 0x00007ff805d5deb8 _UIGestureRecognizerSendActions + 306 9 UIKitCore 0x00007ff805d5db8e -[UIGestureRecognizer _updateGestureForActiveEvents] + 704 10 UIKitCore 0x00007ff805d4ff93 _UIGestureEnvironmentUpdate + 3892 11 CoreFoundation 0x00007ff8004289a4 CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION + 23 12 CoreFoundation 0x00007ff8004232f2 __CFRunLoopDoObservers + 534 13 CoreFoundation 0x00007ff800423814 __CFRunLoopRun + 1120 14 CoreFoundation 0x00007ff800422fb3 CFRunLoopRunSpecific + 536 15 GraphicsServices 0x00007ff8118c20cb GSEventRunModal + 137 16 UIKitCore 0x00007ff806400c3b -[UIApplication _run] + 875 17 UIKitCore 0x00007ff806405b7c UIApplicationMain + 123 18 Kobo Books.debug.dylib 0x00000001136300bb __debug_main_executable_dylib_entry_point + 75 19 dyld 0x000000010d702478 start_sim + 10 20 ??? 0x000000010fd9d345 0x0 + 4560900933 ) libc++abi: terminating due to uncaught exception of type NSException