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iOS Build an Interactive Story App with Swift 2 Refactoring the Model Layer Handling Incorrect Input

Paul M
Paul M
16,370 Points
Posted by Paul M
Paul M
16,370 Points

I got THREAD 1 SIGABIRT when running my app, does anyone have the same problem?

I got this error THREAD 1 SIGABIRT in my code with a big console error, did anyone have the same problem and if so, can you help me?

Project: https://github.com/pauldesign/InteractiveStory

Console Message

2016-08-09 14:01:23.779 InteractiveStory[11660:854654] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<InteractiveStory.ViewController 0x7fcd71d7b9f0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key nameTestField.'
*** First throw call stack:
(
    0   CoreFoundation                      0x000000010e765d85 __exceptionPreprocess + 165
    1   libobjc.A.dylib                     0x0000000110509deb objc_exception_throw + 48
    2   CoreFoundation                      0x000000010e7659c9 -[NSException raise] + 9
    3   Foundation                          0x000000010eb3719b -[NSObject(NSKeyValueCoding) setValue:forKey:] + 288
    4   UIKit                               0x000000010f120d0c -[UIViewController setValue:forKey:] + 88
    5   UIKit                               0x000000010f3577fb -[UIRuntimeOutletConnection connect] + 109
    6   CoreFoundation                      0x000000010e69f890 -[NSArray makeObjectsPerformSelector:] + 224
    7   UIKit                               0x000000010f3561de -[UINib instantiateWithOwner:options:] + 1864
    8   UIKit                               0x000000010f1278d6 -[UIViewController _loadViewFromNibNamed:bundle:] + 381
    9   UIKit                               0x000000010f128202 -[UIViewController loadView] + 178
    10  UIKit                               0x000000010f128560 -[UIViewController loadViewIfRequired] + 138
    11  UIKit                               0x000000010f16cfae -[UINavigationController _layoutViewController:] + 54
    12  UIKit                               0x000000010f16d882 -[UINavigationController _updateScrollViewFromViewController:toViewController:] + 462
    13  UIKit                               0x000000010f16d9f4 -[UINavigationController _startTransition:fromViewController:toViewController:] + 126
    14  UIKit                               0x000000010f16ec4d -[UINavigationController _startDeferredTransitionIfNeeded:] + 890
    15  UIKit                               0x000000010f16fd0b -[UINavigationController __viewWillLayoutSubviews] + 57
    16  UIKit                               0x000000010f31e503 -[UILayoutContainerView layoutSubviews] + 248
    17  UIKit                               0x000000010f048980 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 703
    18  QuartzCore                          0x0000000113a13c00 -[CALayer layoutSublayers] + 146
    19  QuartzCore                          0x0000000113a0808e _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 366
    20  QuartzCore                          0x0000000113a07f0c _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 24
    21  QuartzCore                          0x00000001139fc3c9 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 277
    22  QuartzCore                          0x0000000113a2a086 _ZN2CA11Transaction6commitEv + 486
    23  QuartzCore                          0x0000000113a2a7f8 _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 92
    24  CoreFoundation                      0x000000010e68ac37 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
    25  CoreFoundation                      0x000000010e68aba7 __CFRunLoopDoObservers + 391
    26  CoreFoundation                      0x000000010e68011c CFRunLoopRunSpecific + 524
    27  UIKit                               0x000000010ef88f21 -[UIApplication _run] + 402
    28  UIKit                               0x000000010ef8df09 UIApplicationMain + 171
    29  InteractiveStory                    0x000000010e575d32 main + 114
    30  libdyld.dylib                       0x0000000110fcd92d start + 1
    31  ???                                 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
Safwat Shenouda
Safwat Shenouda
12,362 Points

I tried your project and it works fine. could you please indicate which screen in the interactive story gives you this error?

Paul M
Paul M
16,370 Points
Paul M
Paul M
16,370 Points

It's in the app delegate

1 Answer

Steve Hunter
Steve Hunter
57,712 Points

Hi Paul,

Have you added a connection between code & UI a couple of times and one might not have worked properly? This error can sometimes be caused by having disconnected code/UI elements that you can fix inside your storyboard.

Steve.

Paul M
Paul M
16,370 Points
Paul M
Paul M
16,370 Points

Thanks! I just realized that I changed the name in the code outlet. But not the one on the storyboard!