我收到异常错误，无论我如何更改代码，我都会遇到同样的错误。
这是错误：
2014-10-26 18:29:16.522 UFMTest1[3494:2091624] -[UIView text]: unrecognized selector sent to instance 0x796bc4b0
2014-10-26 18:29:16.552 UFMTest1[3494:2091624] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIView text]: unrecognized selector sent to instance 0x796bc4b0'
*** First throw call stack:
(
0 CoreFoundation 0x002b4946 __exceptionPreprocess + 182
1 libobjc.A.dylib 0x01c90a97 objc_exception_throw + 44
2 CoreFoundation 0x002bc5c5 -[NSObject(NSObject) doesNotRecognizeSelector:] + 277
3 CoreFoundation 0x002053e7 ___forwarding___ + 1047
4 CoreFoundation 0x00204fae _CF_forwarding_prep_0 + 14
5 UFMTest1 0x000cc377 _TFC8UFMTest114ViewController14mySubmitButtonfS0_FPSs9AnyObject_T_ + 487
6 UFMTest1 0x000cd6aa _TToFC8UFMTest114ViewController14mySubmitButtonfS0_FPSs9AnyObject_T_ + 58
7 libobjc.A.dylib 0x01ca67cd -[NSObject performSelector:withObject:withObject:] + 84
8 UIKit 0x00ac923d -[UIApplication sendAction:to:from:forEvent:] + 99
9 UIKit 0x00ac91cf -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 64
10 UIKit 0x00bfce86 -[UIControl sendAction:to:forEvent:] + 69
11 UIKit 0x00bfd2a3 -[UIControl _sendActionsForEvents:withEvent:] + 598
12 UIKit 0x00bfc50d -[UIControl touchesEnded:withEvent:] + 660
13 UIKit 0x00b1960a -[UIWindow _sendTouchesForEvent:] + 874
14 UIKit 0x00b1a0e5 -[UIWindow sendEvent:] + 791
15 UIKit 0x00adf549 -[UIApplication sendEvent:] + 242
16 UIKit 0x00aef37e _UIApplicationHandleEventFromQueueEvent + 20690
17 UIKit 0x00ac3b19 _UIApplicationHandleEventQueue + 2206
18 CoreFoundation 0x001d81df __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
19 CoreFoundation 0x001cdced __CFRunLoopDoSources0 + 253
20 CoreFoundation 0x001cd248 __CFRunLoopRun + 952
21 CoreFoundation 0x001ccbcb CFRunLoopRunSpecific + 443
22 CoreFoundation 0x001cc9fb CFRunLoopRunInMode + 123
23 GraphicsServices 0x0404824f GSEventRunModal + 192
24 GraphicsServices 0x0404808c GSEventRun + 104
25 UIKit 0x00ac78b6 UIApplicationMain + 1526
26 UFMTest1 0x000ceefe top_level_code + 78
27 UFMTest1 0x000cef3b main + 43
28 libdyld.dylib 0x023fdac9 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
这是代码： 导入UIKit
class ViewController: UIViewController {
@IBOutlet var theTextfieldUsername: UITextField!
@IBOutlet var theTextfieldPassword: UITextField!
@IBOutlet var theLabel: UILabel!
@IBAction func mySubmitButton(sender : AnyObject)
{
var usr = "deb"
var pw = "doit"
if theTextfieldUsername.text == usr &&
theTextfieldPassword.text == pw
{
theLabel.text = "You Did It!"
}
else
{
theLabel.text = "You Didn't Do It!"
}
}
override func viewDidLoad()
{
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
似乎一旦我得到一个例外，无论我做什么，它都会恢复到最后一个例外。