每当我点击以编程方式添加到视图中的UITextField
时,我的应用都会崩溃。这是堆栈跟踪(如果有帮助的话):
'NSInvalidArgumentException', reason: '-[Clifford_Bradford.OtherVehiclesViewController numOfOtherVehiclesUpdated:]: unrecognized selector sent to instance 0x7fd92a57f8d0' *** First throw call stack: ( 0 CoreFoundation 0x0000000107e5dc65 __exceptionPreprocess + 165 1 libobjc.A.dylib 0x00000001099c8bb7 objc_exception_throw + 45 2 CoreFoundation 0x0000000107e650ad -[NSObject(NSObject) doesNotRecognizeSelector:] + 205 3 CoreFoundation 0x0000000107dbb13c ___forwarding___ + 988 4 CoreFoundation 0x0000000107dbacd8 _CF_forwarding_prep_0 + 120 5 UIKit 0x00000001086fdd62 -[UIApplication sendAction:to:from:forEvent:] + 75 6 UIKit 0x000000010880f50a -[UIControl _sendActionsForEvents:withEvent:] + 467 7 UIKit 0x0000000108e26d39 -[UITextField _resignFirstResponder] + 256 8 UIKit 0x0000000108e26bab -[UITextField _finishResignFirstResponder] + 45 9 UIKit 0x000000010888078b -[UIResponder resignFirstResponder] + 114 10 UIKit 0x0000000108e26b04 -[UITextField resignFirstResponder] + 114 11 UIKit 0x0000000108880575 -[UIResponder becomeFirstResponder] + 284 12 UIKit 0x000000010876fb81 -[UIView(Hierarchy) becomeFirstResponder] + 99 13 UIKit 0x0000000108e26307 -[UITextField becomeFirstResponder] + 51 14 UIKit 0x0000000108ab5d4e -[UITextInteractionAssistant(UITextInteractionAssistant_Internal) setFirstResponderIfNecessary] + 177 15 UIKit 0x0000000108ab7dc0 -[UITextInteractionAssistant(UITextInteractionAssistant_Internal) oneFingerTap:] + 2263 16 UIKit 0x0000000108aad656 _UIGestureRecognizerSendActions + 262 17 UIKit 0x0000000108aac2f9 -[UIGestureRecognizer _updateGestureWithEvent:buttonEvent:] + 532 18 UIKit 0x0000000108ab0f16 ___UIGestureRecognizerUpdate_block_invoke662 + 51 19 UIKit 0x0000000108ab0e12 _UIGestureRecognizerRemoveObjectsFromArrayAndApplyBlocks + 254 20 UIKit 0x0000000108aa6e8d _UIGestureRecognizerUpdate + 2796 21 UIKit 0x000000010874a646 -[UIWindow _sendGesturesForEvent:] + 1041 22 UIKit 0x000000010874b272 -[UIWindow sendEvent:] + 666 23 UIKit 0x0000000108711541 -[UIApplication sendEvent:] + 246 24 UIKit 0x000000010871ecdc _UIApplicationHandleEventFromQueueEvent + 18265 25 UIKit 0x00000001086f959c _UIApplicationHandleEventQueue + 2066 26 CoreFoundation 0x0000000107d91431 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17 27 CoreFoundation 0x0000000107d872fd __CFRunLoopDoSources0 + 269 28 CoreFoundation 0x0000000107d86934 __CFRunLoopRun + 868 29 CoreFoundation 0x0000000107d86366 CFRunLoopRunSpecific + 470 30 GraphicsServices 0x000000010be31a3e GSEventRunModal + 161 31 UIKit 0x00000001086fc8c0 UIApplicationMain + 1282 32 Clifford Bradford 0x0000000107c33bb7 main + 135 33 libdyld.dylib 0x000000010a0fe145 start + 1 ) libc++abi.dylib: terminating with uncaught exception of type NSException`.
It just points me to the first line of the AppDelegate.swift
which doesn't really help me. Here is the corresponding code that adds the textField
to the view. I would like to add that the contView
is inside a scrollView
.
var otherVehiclePlateNum:UITextField = UITextField(frame: CGRectMake(carLabel.bounds.origin.x + 15, carLabel.frame.maxY + 10, self.contView.frame.width - 30, 25))
otherVehiclePlateNum.placeholder = "TEST"
self.contView.addSubview(otherVehiclePlateNum)
非常感谢您的帮助,我对此一无所知。
最佳答案
看第一行:numOfOtherVehiclesUpdated:
方法实际上是否存在于OtherVehiclesViewController
类中?确保在调用任何@selector
时使冒号与签名匹配(即,您可能具有numOfOtherVehiclesUpdated
方法,该方法与带有参数的numOfOtherVehiclesUpdated:
不同)。
先看看那里-您可能是无意中打来的
关于ios - UITextField触摸时崩溃,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/31799844/