当我点击一个按钮时，应用程序崩溃了，我得到了这个错误:
2015-06-12 19:33:16.150 scroll view[79136:11092579] -[scroll_view.ViewController Action:]: unrecognized selector sent to instance 0x7f834148bdd0
2015-06-12 19:33:16.153 scroll view[79136:11092579] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[scroll_view.ViewController Action:]: unrecognized selector sent to instance 0x7f834148bdd0'
*** First throw call stack:
(
0 CoreFoundation 0x0000000103766c65 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x00000001052d1bb7 objc_exception_throw + 45
2 CoreFoundation 0x000000010376e0ad -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
3 CoreFoundation 0x00000001036c413c ___forwarding___ + 988
4 CoreFoundation 0x00000001036c3cd8 _CF_forwarding_prep_0 + 120
5 UIKit 0x0000000104006da2 -[UIApplication sendAction:to:from:forEvent:] + 75
6 UIKit 0x000000010411854a -[UIControl _sendActionsForEvents:withEvent:] + 467
7 UIKit 0x0000000104117919 -[UIControl touchesEnded:withEvent:] + 522
8 UIKit 0x00000001043b1a10 _UIGestureRecognizerUpdate + 9487
9 UIKit 0x0000000104053686 -[UIWindow _sendGesturesForEvent:] + 1041
10 UIKit 0x00000001040542b2 -[UIWindow sendEvent:] + 666
11 UIKit 0x000000010401a581 -[UIApplication sendEvent:] + 246
12 UIKit 0x0000000104027d1c _UIApplicationHandleEventFromQueueEvent + 18265
13 UIKit 0x00000001040025dc _UIApplicationHandleEventQueue + 2066
14 CoreFoundation 0x000000010369a431 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
15 CoreFoundation 0x00000001036902fd __CFRunLoopDoSources0 + 269
16 CoreFoundation 0x000000010368f934 __CFRunLoopRun + 868
17 CoreFoundation 0x000000010368f366 CFRunLoopRunSpecific + 470
18 GraphicsServices 0x000000010774da3e GSEventRunModal + 161
19 UIKit 0x0000000104005900 UIApplicationMain + 1282
20 scroll view 0x000000010356ac67 main + 135
21 libdyld.dylib 0x0000000105a29145 start + 1
22 ??? 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
这是我的代码:
var imageView: UIImageView!
var scrollView: UIScrollView!
var containerView = UIView()
var buttonScroll: UIScrollView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
// 1
imageView = UIImageView(image: UIImage(named: "Map 1.png"))
// 2
scrollView = UIScrollView(frame: view.bounds)
scrollView.backgroundColor = UIColor.blackColor()
// 3
scrollView.contentSize = imageView.bounds.size
// 4
scrollView.addSubview(imageView)
view.addSubview(scrollView)
scrollView.contentSize.height = scrollView.frame.size.height
var lvl1button = UIButton.buttonWithType(UIButtonType.Custom) as! UIButton
lvl1button.frame = CGRectMake(250, 140, 100, 50)
let level1 = UIImage(named: "Lvl 1 Button.png") as UIImage!
lvl1button.setImage(level1, forState: .Normal)
lvl1button.addTarget(self, action: "Action:", forControlEvents: UIControlEvents.TouchUpInside)
scrollView.addSubview(lvl1button)
最佳答案
您正在使用名为 "Action:" 的操作选择器设置您的按钮。
lvl1button.addTarget(self, action: "Action:", forControlEvents: UIControlEvents.TouchUpInside)
但是 self，您的 View Controller ，没有这样的方法，所以当 Cocoa 试图在按下按钮时调用它时，您会崩溃。不幸的是，您没有显示那部分代码，因此只能猜测，但造成这种不匹配的原因可能有很多:冒号可能错误，拼写或大写可能错误，等等。或者，也许您只是忘了编写方法!
关于ios - swift 中的 "terminating with uncaught exception of type NSException"，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30814576/