我在我的应用中添加了UITabBarController，但在一段时间后删除了。在添加UITabBarController之前，应用程序工作正常，但是当我从应用程序中删除它时，我开始面临以下异常。
Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<XpensesAppDelegate 0x4daaa40> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key tabBarController.'
*** Call stack at first throw:
(
0 CoreFoundation 0x00fa45a9 __exceptionPreprocess + 185
1 libobjc.A.dylib 0x010f8313 objc_exception_throw + 44
2 CoreFoundation 0x00fa44e1 -[NSException raise] + 17
3 Foundation 0x00035677 _NSSetUsingKeyValueSetter + 135
4 Foundation 0x000355e5 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 285
5 UIKit 0x004b930c -[UIRuntimeOutletConnection connect] + 112
6 CoreFoundation 0x00f1a8cf -[NSArray makeObjectsPerformSelector:] + 239
7 UIKit 0x004b7d23 -[UINib instantiateWithOwner:options:] + 1041
8 UIKit 0x004b9ab7 -[NSBundle(UINSBundleAdditions) loadNibNamed:owner:options:] + 168
9 UIKit 0x002bf17a -[UIApplication _loadMainNibFile] + 172
10 UIKit 0x002bfcf4 -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 291
11 UIKit 0x002ca617 -[UIApplication handleEvent:withNewEvent:] + 1533
12 UIKit 0x002c2abf -[UIApplication sendEvent:] + 71
13 UIKit 0x002c7f2e _UIApplicationHandleEvent + 7576
14 GraphicsServices 0x018fc992 PurpleEventCallback + 1550
15 CoreFoundation 0x00f85944 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 52
16 CoreFoundation 0x00ee5cf7 __CFRunLoopDoSource1 + 215
17 CoreFoundation 0x00ee2f83 __CFRunLoopRun + 979
18 CoreFoundation 0x00ee2840 CFRunLoopRunSpecific + 208
19 CoreFoundation 0x00ee2761 CFRunLoopRunInMode + 97
20 UIKit 0x002bf7d2 -[UIApplication _run] + 623
21 UIKit 0x002cbc93 UIApplicationMain + 1160
22 Xpenses 0x00001ad9 main + 121
23 Xpenses 0x00001a55 start + 53
24 ??? 0x00000001 0x0 + 1
)
terminate called throwing an exceptionsharedlibrary apply-load-rules all
解决此异常的任何解决方案？
答案 0 :(得分：1)
您在Interface Builder中的应用代理的tabBarController插座上已连接了某些内容。然而，插座不再存在，所以你得到这个错误。您应该找到并删除该连接。