这是我尝试运行应用程序时读到的消息。应用程序内部没有可能阻止它的断点。我真的不知道该怎么办。请帮帮我!!
2015-12-21 21:31:51.920 Secondo B[11523:709635] Unknown class _TtC9Secondo_B14ViewController in Interface Builder file.
2015-12-21 21:31:51.934 Secondo B[11523:709635] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UIViewController 0x7a672ed0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key passwordLabel.'
*** First throw call stack:
(
0 CoreFoundation 0x013fca84 __exceptionPreprocess + 180
1 libobjc.A.dylib 0x0322de02 objc_exception_throw + 50
2 CoreFoundation 0x013fc6a1 -[NSException raise] + 17
3 Foundation 0x0184e31c -[NSObject(NSKeyValueCoding) setValue:forUndefinedKey:] + 282
4 Foundation 0x017a88da _NSSetUsingKeyValueSetter + 115
5 Foundation 0x017a885f -[NSObject(NSKeyValueCoding) setValue:forKey:] + 295
6 UIKit 0x01f37845 -[UIViewController setValue:forKey:] + 85
7 Foundation 0x017dd0bd -[NSObject(NSKeyValueCoding) setValue:forKeyPath:] + 384
8 UIKit 0x021aa05c -[UIRuntimeOutletConnection connect] + 132
9 libobjc.A.dylib 0x0324200c -[NSObject performSelector:] + 62
10 CoreFoundation 0x0132d571 -[NSArray makeObjectsPerformSelector:] + 273
11 UIKit 0x021a86f6 -[UINib instantiateWithOwner:options:] + 2102
12 UIKit 0x01f3f294 -[UIViewController _loadViewFromNibNamed:bundle:] + 429
13 UIKit 0x01f3fccc -[UIViewController loadView] + 189
14 UIKit 0x01f400d8 -[UIViewController loadViewIfRequired] + 154
15 UIKit 0x01f409c5 -[UIViewController view] + 35
16 UIKit 0x027d7bbc -[_UIFullscreenPresentationController _setPresentedViewController:] + 89
17 UIKit 0x01f0a3e7 -[UIPresentationController initWithPresentedViewController:presentingViewController:] + 140
18 UIKit 0x01f54e4d -[UIViewController _presentViewController:withAnimationController:completion:] + 4539
19 UIKit 0x01f5834b __62-[UIViewController presentViewController:animated:completion:]_block_invoke + 397
20 UIKit 0x01f58690 -[UIViewController _performCoordinatedPresentOrDismiss:animated:] + 493
21 UIKit 0x01f58177 -[UIViewController presentViewController:animated:completion:] + 182
22 UIKit 0x0257787f __74-[UIStoryboardPresentationSegueTemplate newDefaultPerformHandlerForSegue:]_block_invoke + 173
23 UIKit 0x02592c62 -[UIStoryboardSegue perform] + 37
24 UIKit 0x0257f1e7 -[UIStoryboardSegueTemplate _performWithDestinationViewController:sender:] + 508
25 UIKit 0x0257efbf -[UIStoryboardSegueTemplate _perform:] + 92
26 UIKit 0x01f4356b -[UIViewController performSegueWithIdentifier:sender:] + 105
27 Secondo B 0x000c4d49 _TFC9Secondo_B18ViewControllerHome13viewDidAppearfS0_FSbT_ + 409
28 Secondo B 0x000c4dbf _TToFC9Secondo_B18ViewControllerHome13viewDidAppearfS0_FSbT_ + 63
29 UIKit 0x01f46582 -[UIViewController _setViewAppearState:isAnimating:] + 774
30 UIKit 0x01f46d01 -[UIViewController __viewDidAppear:] + 166
31 UIKit 0x01f85d77 -[UINavigationController viewDidAppear:] + 227
32 UIKit 0x01f46582 -[UIViewController _setViewAppearState:isAnimating:] + 774
33 UIKit 0x01f46d01 -[UIViewController __viewDidAppear:] + 166
34 UIKit 0x01f497c9 __64-[UIViewController viewDidMoveToWindow:shouldAppearOrDisappear:]_block_invoke + 57
35 UIKit 0x01f4778b -[UIViewController _executeAfterAppearanceBlock] + 92
36 UIKit 0x01d83a6e _runAfterCACommitDeferredBlocks + 704
37 UIKit 0x01d98d81 _cleanUpAfterCAFlushAndRunDeferredBlocks + 103
38 UIKit 0x01d98b6d __84-[UIApplication _handleApplicationActivationWithScene:transitionContext:completion:]_block_invoke_2 + 124
39 CoreFoundation 0x01316d00 __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 16
40 CoreFoundation 0x0130c683 __CFRunLoopDoBlocks + 195
41 CoreFoundation 0x0130bdb8 __CFRunLoopRun + 1016
42 CoreFoundation 0x0130b706 CFRunLoopRunSpecific + 470
43 CoreFoundation 0x0130b51b CFRunLoopRunInMode + 123
44 GraphicsServices 0x05979664 GSEventRunModal + 192
45 GraphicsServices 0x059794a1 GSEventRun + 104
46 UIKit 0x01d761eb UIApplicationMain + 160
47 Secondo B 0x000c5eec main + 140
48 libdyld.dylib 0x03c9ba21 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
答案 0 :(得分：1)
修复passwordLabel的出口。您可以通过ctr +从标签拖动到IBOutlet来完成此操作。希望这可以帮助。