Question

有谁能帮我理解为什么我会收到这个错误？当我加载一个视图控制器但似乎无法理解为什么时，它似乎正在发生。

通常会导致这样的错误？

    *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UITextInputTraits length]: unrecognized selector sent to instance 0x7fbf924828a0'
*** First throw call stack:
(
    0   CoreFoundation                      0x000000010664ac65 __exceptionPreprocess + 165
    1   libobjc.A.dylib                     0x0000000105f27bb7 objc_exception_throw + 45
    2   CoreFoundation                      0x00000001066520ad -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
    3   CoreFoundation                      0x00000001065a813c ___forwarding___ + 988
    4   CoreFoundation                      0x00000001065a7cd8 _CF_forwarding_prep_0 + 120
    5   libswiftCore.dylib                  0x0000000107ddf728 _TTSf4g_d___TFSSCfMSSFT12_cocoaStringPSs9AnyObject__SS + 120
    6   libswiftCore.dylib                  0x0000000107dc01a3 _TFSSCfMSSFT12_cocoaStringPSs9AnyObject__SS + 19
    7   Project1                            0x00000001054ec3bd _TToFC8ASA_Rank22SettingsViewControllers9ASANumberSS + 61
    8   Foundation                          0x0000000105abdb53 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 259
    9   CoreFoundation                      0x0000000106592d50 -[NSArray makeObjectsPerformSelector:] + 224
    10  UIKit                               0x0000000106d1b4eb -[UINib instantiateWithOwner:options:] + 1506
    11  UIKit                               0x0000000106b736d8 -[UIViewController _loadViewFromNibNamed:bundle:] + 242
    12  UIKit                               0x0000000106b73cc8 -[UIViewController loadView] + 109
    13  UIKit                               0x0000000106b73f39 -[UIViewController loadViewIfRequired] + 75
    14  UIKit                               0x0000000106b743ce -[UIViewController view] + 27
    15  UIKit                               0x000000010710132d -[_UIFullscreenPresentationController _setPresentedViewController:] + 65
    16  UIKit                               0x0000000106b4ed69 -[UIPresentationController initWithPresentedViewController:presentingViewController:] + 105
    17  UIKit                               0x0000000106b80248 -[UIViewController _presentViewController:withAnimationController:completion:] + 1761
    18  UIKit                               0x0000000106b826c1 __62-[UIViewController presentViewController:animated:completion:]_block_invoke + 132
    19  UIKit                               0x0000000106b825e5 -[UIViewController presentViewController:animated:completion:] + 229
    20  UIKit                               0x0000000106a44d62 -[UIApplication sendAction:to:from:forEvent:] + 75
    21  UIKit                               0x0000000106b5650a -[UIControl _sendActionsForEvents:withEvent:] + 467
    22  UIKit                               0x0000000106b558d9 -[UIControl touchesEnded:withEvent:] + 522
    23  UIKit                               0x0000000106a91958 -[UIWindow _sendTouchesForEvent:] + 735
    24  UIKit                               0x0000000106a92282 -[UIWindow sendEvent:] + 682
    25  UIKit                               0x0000000106a58541 -[UIApplication sendEvent:] + 246
    26  UIKit                               0x0000000106a65cdc _UIApplicationHandleEventFromQueueEvent + 18265
    27  UIKit                               0x0000000106a4059c _UIApplicationHandleEventQueue + 2066
    28  CoreFoundation                      0x000000010657e431 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
    29  CoreFoundation                      0x00000001065742fd __CFRunLoopDoSources0 + 269
    30  CoreFoundation                      0x0000000106573934 __CFRunLoopRun + 868
    31  CoreFoundation                      0x0000000106573366 CFRunLoopRunSpecific + 470
    32  GraphicsServices                    0x000000010a1e0a3e GSEventRunModal + 161
    33  UIKit                               0x0000000106a438c0 UIApplicationMain + 1282
    34  Project1                            0x00000001054f70c7 main + 135
    35  libdyld.dylib                       0x0000000108530145 start + 1
    36  ???                                 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException

请询问任何其他有用的信息

由于

Answer 1

您很可能将Outlet分配给您正在转换到的视图控制器上的元素，该元素不再连接到您的代码。此youtube视频详细说明了这一点。

要解决此问题，请尝试右键单击所有元素（UILabels，UIViews，UIButton ...）并打开助理编辑器并交叉检查以查看视图控制器中是否引用了插座名称。

Example

SIGABRT错误迅速

1 个答案: