在VC1中，按钮具有对VC2的触发segue动作。当我点击VC1中的按钮时，当我尝试调用super时，app会在sendEvent的覆盖时崩溃。
public class UIApplicationSub: UIApplication {
// properties here
override public func sendEvent(event: UIEvent) {
super.sendEvent(event)
// reset idle timer here
我不确定，但是从下面的崩溃报告中看起来我在加载VC2时遇到了keyValueCoding错误，但是新视图只是一些按钮并且没有设置出口
关于可能导致此次崩溃的任何想法？
Incident Identifier: 35C240D4-60EF-41E9-B2F4-9A288806EFEF
CrashReporter Key: 81571a82664994674b5d12cbd33bb0c911f5c23f
Hardware Model: iPhone6,1
Version: 2.14 (8.00)
Code Type: ARM-64 (Native)
Parent Process: launchd [1]
Date/Time: 2016-01-20 08:53:57.57 -0500
Launch Time: 2016-01-20 08:53:41.41 -0500
OS Version: iOS 9.2 (13C75)
Report Version: 105
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Triggered by Thread: 0
Filtered syslog:
None found
Last Exception Backtrace:
0 CoreFoundation 0x18186d900 __exceptionPreprocess + 124
1 libobjc.A.dylib 0x180edbf80 objc_exception_throw + 56
2 CoreFoundation 0x18186d5c0 -[NSException raise] + 12
3 Foundation 0x182167f74 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 268
4 UIKit 0x1868cff1c -[UIViewController setValue:forKey:] + 104
5 UIKit 0x186c187cc -[UIRuntimeOutletCollectionConnection performConnect] + 908
6 CoreFoundation 0x1817973ac -[NSArray makeObjectsPerformSelector:] + 232
7 UIKit 0x186a296a0 -[UINib instantiateWithOwner:options:] + 1748
8 UIKit 0x1868d333c -[UIViewController _loadViewFromNibNamed:bundle:] + 376
9 UIKit 0x18669c250 -[UIViewController loadView] + 176
10 UIKit 0x18655fd6c -[UIViewController loadViewIfRequired] + 144
11 UIKit 0x18655fcc4 -[UIViewController view] + 28
12 UIKit 0x186e2aca0 -[_UIFullscreenPresentationController _setPresentedViewController:] + 92
13 UIKit 0x1868b70dc -[UIPresentationController initWithPresentedViewController:presentingViewController:] + 136
14 UIKit 0x1868dcc24 -[UIViewController _presentViewController:withAnimationController:completion:] + 3780
15 UIKit 0x1868df9c0 -[UIViewController _performCoordinatedPresentOrDismiss:animated:] + 472
16 UIKit 0x186659cec -[UIViewController presentViewController:animated:completion:] + 184
17 UIKit 0x186c847e4 __74-[UIStoryboardPresentationSegueTemplate newDefaultPerformHandlerForSegue:]_block_invoke + 144
18 UIKit 0x186c8b63c -[UIStoryboardSegueTemplate _performWithDestinationViewController:sender:] + 456
19 UIKit 0x186c8b440 -[UIStoryboardSegueTemplate _perform:] + 92
20 UIKit 0x186c8b708 -[UIStoryboardSegueTemplate perform:] + 160
21 UIKit 0x186597e50 -[UIApplication sendAction:to:from:forEvent:] + 100
22 UIKit 0x186597dcc -[UIControl sendAction:to:forEvent:] + 80
23 UIKit 0x18657fa88 -[UIControl _sendActionsForEvents:withEvent:] + 416
24 UIKit 0x1865976e4 -[UIControl touchesEnded:withEvent:] + 572
25 UIKit 0x186597314 -[UIWindow _sendTouchesForEvent:] + 804
26 UIKit 0x18658fe30 -[UIWindow sendEvent:] + 784
27 UIKit 0x1865604cc -[UIApplication sendEvent:] + 248
28 DigitalLife 0x100899420 UIApplicationSub.sendEvent(UIEvent) -> () (UIApplicationSub.swift:50)
29 DigitalLife 0x10089999c @objc UIApplicationSub.sendEvent(UIEvent) -> () (UIApplicationSub.swift:0)
30 UIKit 0x18655e794 _UIApplicationHandleEventQueue + 5528
31 CoreFoundation 0x181824efc __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24
32 CoreFoundation 0x181824990 __CFRunLoopDoSources0 + 540
33 CoreFoundation 0x181822690 __CFRunLoopRun + 724
34 CoreFoundation 0x181751680 CFRunLoopRunSpecific + 384
35 GraphicsServices 0x182c60088 GSEventRunModal + 180
36 UIKit 0x1865c8d90 UIApplicationMain + 204
37 DigitalLife 0x10031f334 main (main.swift:11)
38 libdyld.dylib 0x1812f28b8 start + 4
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libsystem_kernel.dylib 0x0000000181410140 __pthread_kill + 8
1 libsystem_pthread.dylib 0x00000001814d8ef8 pthread_kill + 112
2 libsystem_c.dylib 0x0000000181381dac abort + 140
3 DigitalLife 0x000000010095fce8 -[PLCrashReporter generateLiveReportWithThread:] + 0
4 CoreFoundation 0x000000018186dc88 __handleUncaughtException + 652
5 libobjc.A.dylib 0x0000000180edc23c _objc_terminate() + 112
6 libc++abi.dylib 0x0000000180ecef44 std::__terminate(void (*)()) + 16
7 libc++abi.dylib 0x0000000180eceb10 __cxa_rethrow + 144
8 libobjc.A.dylib 0x0000000180edc120 objc_exception_rethrow + 44
9 CoreFoundation 0x0000000181751728 CFRunLoopRunSpecific + 552
10 GraphicsServices 0x0000000182c60088 GSEventRunModal + 180
11 UIKit 0x00000001865c8d90 UIApplicationMain + 204
12 DigitalLife 0x000000010031f334 main (main.swift:11)
13 libdyld.dylib 0x00000001812f28b8 start + 4
答案 0 :(得分：0)
我建议您单击导致问题的按钮，在Xcode中，单击“连接”检查器。查看按钮的连接位置。
复制视图控制器并在故事板中重复使用可能会导致类似问题。有时，与其他插座的连接也会被复制，并且在运行时会导致问题。
如果想法正确，请务必删除IBAction并写一个新的并将其连接到按钮。