Ios – libc++abi.dylib: terminating with uncaught exception of type NSException (lldb)

iosswift

I'm programming an app in swift and when I run the test app on the iPhone simulator everything works, but then I try to swipe right, which is a gesture that I added for it to go to the next Page(View Controller Two) it crashes and shows this error report in the console log.

2014-10-18 12:07:34.400 soundtest[17081:818922] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<soundtest.ViewControllerTwo 0x7f92f1f20090> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key sfdfa.'
*** First throw call stack:
(
    0   CoreFoundation                      0x00000001067813f5 __exceptionPreprocess + 165
    1   libobjc.A.dylib                     0x00000001082afbb7 objc_exception_throw + 45
    2   CoreFoundation                      0x0000000106781039 -[NSException raise] + 9
    3   Foundation                          0x0000000106b984d3 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 259
    4   CoreFoundation                      0x00000001066cb400 -[NSArray makeObjectsPerformSelector:] + 224
    5   UIKit                               0x00000001072ce97d -[UINib instantiateWithOwner:options:] + 1506
    6   UIKit                               0x000000010712f698 -[UIViewController _loadViewFromNibNamed:bundle:] + 242
    7   UIKit                               0x000000010712fc88 -[UIViewController loadView] + 109
    8   UIKit                               0x000000010712fef9 -[UIViewController loadViewIfRequired] + 75
    9   UIKit                               0x000000010713038e -[UIViewController view] + 27
    10  UIKit                               0x00000001076cd83f -[_UIFullscreenPresentationController _setPresentedViewController:] + 65
    11  UIKit                               0x000000010710bc49 -[UIPresentationController initWithPresentedViewController:presentingViewController:] + 105
    12  UIKit                               0x000000010713c121 -[UIViewController _presentViewController:withAnimationController:completion:] + 1746
    13  UIKit                               0x000000010713e461 __62-[UIViewController presentViewController:animated:completion:]_block_invoke + 132
    14  UIKit                               0x000000010713e385 -[UIViewController presentViewController:animated:completion:] + 229
    15  UIKit                               0x00000001073bb9d6 _UIGestureRecognizerSendActions + 262
    16  UIKit                               0x00000001073ba679 -[UIGestureRecognizer _updateGestureWithEvent:buttonEvent:] + 532
    17  UIKit                               0x00000001073bf296 ___UIGestureRecognizerUpdate_block_invoke662 + 51
    18  UIKit                               0x00000001073bf192 _UIGestureRecognizerRemoveObjectsFromArrayAndApplyBlocks + 254
    19  UIKit                               0x00000001073b520d _UIGestureRecognizerUpdate + 2796
    20  UIKit                               0x00000001070520a6 -[UIWindow _sendGesturesForEvent:] + 1041
    21  UIKit                               0x0000000107052cd3 -[UIWindow sendEvent:] + 667
    22  UIKit                               0x000000010701fae1 -[UIApplication sendEvent:] + 246
    23  UIKit                               0x000000010702cbad _UIApplicationHandleEventFromQueueEvent + 17370
    24  UIKit                               0x0000000107008233 _UIApplicationHandleEventQueue + 1961
    25  CoreFoundation                      0x00000001066b6ad1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
    26  CoreFoundation                      0x00000001066ac99d __CFRunLoopDoSources0 + 269
    27  CoreFoundation                      0x00000001066abfd4 __CFRunLoopRun + 868
    28  CoreFoundation                      0x00000001066aba06 CFRunLoopRunSpecific + 470
    29  GraphicsServices                    0x000000010a1699f0 GSEventRunModal + 161
    30  UIKit                               0x000000010700b550 UIApplicationMain + 1282
    31  soundtest                           0x000000010624503e top_level_code + 78
    32  soundtest                           0x000000010624507a main + 42
    33  libdyld.dylib                       0x000000010ae4a145 start + 1
    34  ???                                 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb) 

Best Answer

CMYR - "his could also happen if you've wired up a button to an IBAction that doesn't exist anymore (or has been renamed)"

If you're running into this problem make sure that you go to Main.storyboard, RIGHT click on the yellow box icon (view controller) at the top of the phone outline and DELETE the outlet(s) with yellow flags.

What happens in instances like this is you probably named an action, then renamed it. You need to delete the old name and if that was the only issue will start right up in sim!

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