Swift - Passing a string from VC1 to VC2 - Crash - ios

Question

I have a app in swift where I'm just trying to pass a string from one ViewController to another. After the segue, I see the second viewController on top of the first, the data is passed, and I get the following exception:
2014-07-11 10:58:17.078 Flipper[8967:377257] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[_TtC7Flipper19FirstViewController textField:]: unrecognized selector sent to instance 0x7fba2351eda0'
*** First throw call stack:
(
0 CoreFoundation 0x000000010c805055 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x000000010e528a1c objc_exception_throw + 45
2 CoreFoundation 0x000000010c80bf1d -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
3 CoreFoundation 0x000000010c764dbc ___forwarding___ + 988
4 CoreFoundation 0x000000010c764958 _CF_forwarding_prep_0 + 120
5 UIKit 0x000000010d2ed196 -[UIApplication sendAction:to:from:forEvent:] + 75
6 UIKit 0x000000010d3f1c80 -[UIControl _sendActionsForEvents:withEvent:] + 467
7 UIKit 0x000000010d9fbb86 -[UITextField _resignFirstResponder] + 256
8 UIKit 0x000000010d45cbff -[UIResponder resignFirstResponder] + 117
9 UIKit 0x000000010d9fb98f -[UITextField resignFirstResponder] + 114
10 UIKit 0x000000010d355722 -[UIView(Hierarchy) _removeFirstResponderFromSubtree] + 161
11 UIKit 0x000000010d355bdd __UIViewWillBeRemovedFromSuperview + 76
12 UIKit 0x000000010d35594c -[UIView(Hierarchy) removeFromSuperview] + 91
13 UIKit 0x000000010d3ef12c __71-[UIPresentationController _initViewHierarchyForPresentationSuperview:]_block_invoke478 + 785
14 UIKit 0x000000010d3eb7bd -[UIPresentationController transitionDidFinish:] + 87
15 UIKit 0x000000010d3edd8e __56-[UIPresentationController runTransitionForCurrentState]_block_invoke_2 + 133
16 UIKit 0x000000010da1d123 -[_UIViewControllerTransitionContext completeTransition:] + 110
17 UIKit 0x000000010d3e8ea3 -[UITransitionView _didCompleteTransition:] + 1120
18 UIKit 0x000000010d34542a -[UIViewAnimationState sendDelegateAnimationDidStop:finished:] + 209
19 UIKit 0x000000010d345760 -[UIViewAnimationState animationDidStop:finished:] + 76
20 QuartzCore 0x000000010d176f9e _ZN2CA5Layer23run_animation_callbacksEPv + 308
21 libdispatch.dylib 0x000000010ea64d64 _dispatch_client_callout + 8
22 libdispatch.dylib 0x000000010ea50f82 _dispatch_main_queue_callback_4CF + 941
23 CoreFoundation 0x000000010c76dae9 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9
24 CoreFoundation 0x000000010c73046b __CFRunLoopRun + 2043
25 CoreFoundation 0x000000010c72fa06 CFRunLoopRunSpecific + 470
26 GraphicsServices 0x00000001103b9abf GSEventRunModal + 161
27 UIKit 0x000000010d2ebcf8 UIApplicationMain + 1282
28 Flipper 0x000000010c37737d top_level_code + 77
29 Flipper 0x000000010c3773ba main + 42
30 libdyld.dylib 0x000000010ea99145 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
My VC1 code is:
class FirstViewController: UIViewController {
#IBOutlet var textField: UITextField
var myVariable:String!
override func prepareForSegue(segue: UIStoryboardSegue!, sender: AnyObject!) {
if (segue.identifier == "P1ToP2") {
var svc = segue!.destinationViewController as SecondViewController;
myVariable = textField.text
svc.myVariable = myVariable
}
}
}
My VC2 code is:
class SecondViewController: UIViewController {
#IBOutlet var labelTwo: UILabel
var myVariable:String!
override func viewDidLoad() {
super.viewDidLoad()
labelTwo.text = myVariable
}
I'm using a Storyboard where VC1 has a Button that invokes a Show (push) segue called P1ToP2
Any ideas what I'm doing wrong? Thanks

Answer 1

As your crash says:
reason: '-[_TtC7Flipper19FirstViewController textField:]: unrecognized selector sent to instance
and you have not mentioned that the crash occurs on clicking the button.
My guess is try remove the space between textField: and UITextField.
I guess the problem is there, not in passing the string.