IQKeyboardManager has crash when used in iOS version 9.1

[junhg521]

Hi,
IQKeyboardManager has crash when controller interface switching, i think it's crash when keyboard show in the disappear controller and trigger a keyboard hide notification

Last Exception Backtrace:
0   CoreFoundation                  0x184174f48 __exceptionPreprocess + 124 (NSException.m:162)
1   libobjc.A.dylib                 0x198d27f80 objc_exception_throw + 56 (objc-exception.mm:531)
2   CoreFoundation                  0x18405e754 -[__NSArrayM insertObject:atIndex:] + 808 (NSArray.m:572)
3   UIKit                           0x1898fc8e0 -[UITabBarController _viewsWithDisabledInteractionGivenTransitionContext:] + 148 (UITabBarController.m:1809)
4   UIKit                           0x189a9f160 __71-[UINavigationController pushViewController:transition:forceImmediate:]_block_invoke1639 + 64 (UINavigationController.m:5274)
5   UIKit                           0x1897c6428 -[UINavigationController _startDeferredTransitionIfNeeded:] + 1352 (UINavigationController.m:4693)
6   UIKit                           0x1897c5e6c -[UINavigationController __viewWillLayoutSubviews] + 60 (UINavigationController.m:4878)
7   UIKit                           0x1897c5dd4 -[UILayoutContainerView layoutSubviews] + 208 (UILayoutContainerView.m:77)
8   UIKit                           0x1897037ac -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 644 (UIView.m:11680)
9   QuartzCore                      0x188f02b58 -[CALayer layoutSublayers] + 148 (CALayer.mm:8822)
10  QuartzCore                      0x188efd764 CA::Layer::layout_if_needed(CA::Transaction*) + 292 (CALayer.mm:8702)
11  UIKit                           0x18971a2fc -[UIView(Hierarchy) layoutBelowIfNeeded] + 884 (UIView.m:7803)
12  WandaBP                         0x100510ac0 __38-[IQKeyboardManager keyboardWillHide:]_block_invoke.345 + 1000 (IQKeyboardManager.m:1178)
13  UIKit                           0x1897400bc +[UIView(UIViewAnimationWithBlocks) _setupAnimationWithDuration:delay:view:options:factory:animations:start:animationStateGenerator:completion:] + 620 (UIView.m:9444)
14  UIKit                           0x189757e94 +[UIView(UIViewAnimationWithBlocks) animateWithDuration:delay:options:animations:completion:] + 108 (UIView.m:9493)
15  WandaBP                         0x100510100 -[IQKeyboardManager keyboardWillHide:] + 884 (IQKeyboardManager.m:1164)
16  CoreFoundation                  0x18411a60c __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 20 (CFNotificationCenter.c:674)
17  CoreFoundation                  0x184119e2c _CFXRegistrationPost + 396 (CFNotificationCenter.c:171)
18  CoreFoundation                  0x184119bac ___CFXNotificationPost_block_invoke + 60 (CFNotificationCenter.c:1017)
19  CoreFoundation                  0x18417f424 -[_CFXNotificationRegistrar find:object:observer:enumerator:] + 1532 (CFXNotificationRegistrar.m:163)
20  CoreFoundation                  0x18405a714 _CFXNotificationPost + 368 (CFNotificationCenter.c:1014)
21  Foundation                      0x184fcadcc -[NSNotificationCenter postNotificationName:object:userInfo:] + 68 (NSNotification.m:497)
22  UIKit                           0x189fd6abc -[UIInputWindowController postStartNotifications:withInfo:] + 444 (UIInputWindowController.m:1300)
23  UIKit                           0x189fd8ad8 __77-[UIInputWindowController moveFromPlacement:toPlacement:starting:completion:]_block_invoke867 + 424 (UIInputWindowController.m:1708)
24  UIKit                           0x1897400bc +[UIView(UIViewAnimationWithBlocks) _setupAnimationWithDuration:delay:view:options:factory:animations:start:animationStateGenerator:completion:] + 620 (UIView.m:9444)
25  UIKit                           0x189817c84 +[UIView(UIViewAnimationWithBlocks) _animateWithDuration:delay:options:animations:start:completion:] + 128 (UIView.m:9488)
26  UIKit                           0x189acfd48 -[_UIViewControllerKeyboardAnimationStyle launchAnimation:afterStarted:completion:forHost:fromCurrentPosition:] + 460 (_UIViewControllerKeyboardAnimationStyle.m:177)
27  UIKit                           0x189fd8530 -[UIInputWindowController moveFromPlacement:toPlacement:starting:completion:] + 1320 (UIInputWindowController.m:1762)
28  UIKit                           0x189fde7a8 -[UIInputWindowController setInputViewSet:] + 720 (UIInputWindowController.m:2720)
29  UIKit                           0x189fd7dbc -[UIInputWindowController performOperations:withAnimationStyle:] + 56 (UIInputWindowController.m:1590)
30  UIKit                           0x1897d44cc -[UIPeripheralHost(UIKitInternal) setInputViews:animationStyle:] + 1164 (UIPeripheralHost.m:4462)
31  UIKit                           0x189d7d888 -[UIPeripheralHost(UIKitInternal) _preserveInputViewsWithId:animated:reset:] + 424 (UIPeripheralHost.m:4816)
32  UIKit                           0x1897d1e5c -[UINavigationController navigationTransitionView:didStartTransition:] + 896 (UINavigationController.m:3534)
33  UIKit                           0x1898ba9b8 -[UINavigationController _startCustomTransition:] + 3616 (UINavigationController.m:1741)
34  UIKit                           0x1897c6190 -[UINavigationController _startDeferredTransitionIfNeeded:] + 688 (UINavigationController.m:4654)
35  UIKit                           0x1897c5e6c -[UINavigationController __viewWillLayoutSubviews] + 60 (UINavigationController.m:4878)
36  UIKit                           0x1897c5dd4 -[UILayoutContainerView layoutSubviews] + 208 (UILayoutContainerView.m:77)
37  UIKit                           0x1897037ac -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 644 (UIView.m:11680)
38  QuartzCore                      0x188f02b58 -[CALayer layoutSublayers] + 148 (CALayer.mm:8822)
39  QuartzCore                      0x188efd764 CA::Layer::layout_if_needed(CA::Transaction*) + 292 (CALayer.mm:8702)
40  QuartzCore                      0x188efd624 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 32 (CALayer.mm:2507)
41  QuartzCore                      0x188efccc0 CA::Context::commit_transaction(CA::Transaction*) + 252 (CAContextInternal.mm:1627)
42  QuartzCore                      0x188efca08 CA::Transaction::commit() + 512 (CATransactionInternal.mm:417)
43  UIKit                           0x18970691c _UIApplicationHandleEventQueue + 5960 (UIApplication.m:9133)
44  CoreFoundation                  0x18412c544 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24 (CFRunLoop.c:1761)
45  CoreFoundation                  0x18412bfd8 __CFRunLoopDoSources0 + 540 (CFRunLoop.c:1807)
46  CoreFoundation                  0x184129cd8 __CFRunLoopRun + 724 (CFRunLoop.c:2536)
47  CoreFoundation                  0x184058ca0 CFRunLoopRunSpecific + 384 (CFRunLoop.c:2814)
48  GraphicsServices                0x18f294088 GSEventRunModal + 180 (GSEvent.c:2245)
49  UIKit                           0x189770ffc UIApplicationMain + 204 (UIApplication.m:3665)
50  WandaBP                         0x1004ce930 main + 144 (AppDelegate.swift:13)
51  libdyld.dylib                   0x1995768b8 start + 4 (start_glue.s:78)

[hackiftekhar]

Hmm, looks like IQKeyboardManager did layoutIfNeeded and app gets crashed due to some invalidate layout (due to your app logic). I think it's more related to your layout.

[junhg521]

app will point out invalidate layout in xib file when controller has push,but i found has no layout warning in my project.so i think NSArray has insert some nil or invalidate index

[hackiftekhar]

Above this line

__38-[IQKeyboardManager keyboardWillHide:]

You'll see all layout related stacks that why I think it's a layout related issues.