Swift：终止types为NSException的未捕获exception
我正在开发一个简单的应用程序，当我点击注册用户，应用程序被终止。 请帮我弄清楚这一点。
它说：
终止应用程序由于未捕获的exception“NSUnknownKeyException”，原因：'[setValue：forUndefinedKey：]：此类不是密钥值CreditCardTextField的编码兼容。
这是更详细的错误：
015-06-04 22：42：57.661 ParseStarterProject [43853：4461316] Interface Builder文件中的未知类RegisterPageViewController。 2015-06-04 22：42：57.712 ParseStarterProject [43853：4461316] *由于未捕获的exception'NSUnknownKeyException'而终止应用程序，原因：'[setValue：forUndefinedKey：]：此类不是关键值CreditCardTextField “。 *第一次抛出调用堆栈：（0 CoreFoundation 0x00000001106ccf35 exceptionPreprocess + 165 1 libobjc.A.dylib
0x000000011233ebb7 objc_exception_throw + 45 2 CoreFoundation
0x00000001106ccb79 – [NSException raise] + 9 3 Foundation
0x0000000110b6b7b3 – [NSObject（NSKeyValueCoding）setValue：forKey：] + 259 4 CoreFoundation 0x0000000110616e80 – [NSArray makeObjectsPerformSelector：] + 224 5 UIKit 0x000000011134bc7d – [UINib instantiateWithOwner：options：] + 1506 6
UIKit 0x00000001111aaf98 – [UIViewController _loadViewFromNibNamed：bundle：] + 242 7 UIKit 0x00000001111ab588 – [UIViewController loadView] + 109 8 UIKit
0x00000001111ab7f9 – [UIViewController loadViewIfRequired] + 75 9
UIKit 0x00000001111abc8e – [UIViewController view] + 27 10 UIKit 0x000000011174d41e – [_ UIFullscreenPresentationController _setPresentedViewController：] + 65 11 UIKit 0x0000000111187429 – [UIPresentationController initWithPresentedViewController：presentsViewController：] + 105 12 UIKit 0x00000001111b7a41 – [UIViewController _presentViewController：withAnimationController：completion：] + 1746 13 UIKit 0x00000001111b9d81 __62- [UIViewController presentViewController：animated：completion：] _ block_invoke + 132 UIKit 0x00000001111b9ca5 – [UIViewController presentViewController：animated：completion：] + 229 15 UIKit 0x00000001110878be – [UIApplication sendAction：to：from：forEvent：] + 75 16 UIKit 0x000000011118e410 – [UIControl _sendActionsForEvents：withEvent：] + 467 17 UIKit 0x000000011118d7df – [UIControl touchesEnded：withEvent：] + 522 18 UIKit 0x00000001110cd308 – [UIWindow _sendTouchesForEvent：] + 735 19 UIKit 0x00000001110cdc33 – [UIWindow sendEvent：] + 683 20 UIKit
0x000000011109a9b1 – [UIApplication sendEvent：] + 246 21 UIKit
0x00000001110a7a7d _UIApplicationHandleEventFromQueueEvent + 17370 22的UIKit 0x0000000111083103 _UIApplicationHandleEventQueue + 1961 23的CoreFoundation 0x0000000110602551 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 17 24的CoreFoundation 0x00000001105f841d __CFRunLoopDoSources0 + 269 25的CoreFoundation 0x00000001105f7a54 __CFRunLoopRun + 868 26的CoreFoundation
0x00000001105f7486 CFRunLoopRunSpecific + 470 27graphics服务
0x0000000113de79f0 GSEventRunModal + 161 28 UIKit
0x0000000111086420 UIApplicationMain + 1282 29 ParseStarterProject
0x000000010fbbe9de top_level_code + 78 30 ParseStarterProject
0x000000010fbbeaba main + 42 31 libdyld.dylib
0x0000000112b54145 start + 1 32 ???
0x0000000000000001 0x0 + 1）libc ++ abi.dylib：以NSException（lldb）types的未捕获exception终止
看起来你有一个用于CreditCardTextField的bibutlet，请检查你的故事板，只要你重新连接sockets，它应该再次工作
setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key CreditCardTextField.'
这是你如何检查你的网点：
select字段，右侧的sockets应正确连接，并且代码中的圆圈内应有一个圆点，如果没有连接断开，则通过拖动来修复。