当用户按下按钮时，我很容易尝试从一个视图控制器触发一个segue，但是当我尝试时，我得到以下错误代码。
2014-12-09 15:38:32.559 Hokulia[2697:172401] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<selectCombos 0x7ffb11e5f030> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key tableView.'
*** First throw call stack:
(
0 CoreFoundation 0x0000000104f48f35 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x0000000104be1bb7 objc_exception_throw + 45
2 CoreFoundation 0x0000000104f48b79 -[NSException raise] + 9
3 Foundation 0x000000010477e7b3 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 259
4 CoreFoundation 0x0000000104e92e80 -[NSArray makeObjectsPerformSelector:] + 224
5 UIKit 0x000000010374fc7d -[UINib instantiateWithOwner:options:] + 1506
6 UIKit 0x00000001035aef98 -[UIViewController _loadViewFromNibNamed:bundle:] + 242
7 UIKit 0x00000001035af588 -[UIViewController loadView] + 109
8 UIKit 0x00000001035af7f9 -[UIViewController loadViewIfRequired] + 75
9 UIKit 0x00000001035afc8e -[UIViewController view] + 27
10 UIKit 0x00000001035d3507 -[UINavigationController _startCustomTransition:] + 633
11 UIKit 0x00000001035df3fe -[UINavigationController _startDeferredTransitionIfNeeded:] + 386
12 UIKit 0x00000001035dff47 -[UINavigationController __viewWillLayoutSubviews] + 43
13 UIKit 0x0000000103725509 -[UILayoutContainerView layoutSubviews] + 202
14 UIKit 0x0000000103503973 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 521
15 QuartzCore 0x0000000105daade8 -[CALayer layoutSublayers] + 150
16 QuartzCore 0x0000000105d9fa0e _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 380
17 QuartzCore 0x0000000105d9f87e _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 24
18 QuartzCore 0x0000000105d0d63e _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 242
19 QuartzCore 0x0000000105d0e74a _ZN2CA11Transaction6commitEv + 390
20 QuartzCore 0x0000000105d0edb5 _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 89
21 CoreFoundation 0x0000000104e7ddc7 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
22 CoreFoundation 0x0000000104e7dd20 __CFRunLoopDoObservers + 368
23 CoreFoundation 0x0000000104e73b53 __CFRunLoopRun + 1123
24 CoreFoundation 0x0000000104e73486 CFRunLoopRunSpecific + 470
25 GraphicsServices 0x00000001058e19f0 GSEventRunModal + 161
26 UIKit 0x000000010348a420 UIApplicationMain + 1282
27 Hokulia 0x0000000102b25ca3 main + 115
28 libdyld.dylib 0x0000000107c4a145 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)