XCode 6.4: Error when add textField object

Question

Created Aug ’15

Replies 3

Boosts 0

Participants 3

Following tutorials from https://developer.apple.com/library/prerelease/ios/referencelibrary/GettingStarted/DevelopiOSAppsSwift/index.html

At step "Connect the UI to Code".

Following error seen in console when I try to run in simulator.

2015-08-25 03:03:50.162 MealApp[7855:6029867] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<MealApp.ViewController 0x7fc91bf39a60> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key someTextField.'

*** First throw call stack:

(

0 CoreFoundation 0x0000000107344c65 __exceptionPreprocess + 165

1 libobjc.A.dylib 0x0000000108eafbb7 objc_exception_throw + 45

2 CoreFoundation 0x00000001073448a9 -[NSException raise] + 9

3 Foundation 0x0000000107762b53 -[NSObject(NSKeyValueCoding) setValue:forKey:] + 259

4 UIKit 0x00000001080ca606 -[UIRuntimeOutletCollectionConnection performConnect] + 537

5 CoreFoundation 0x000000010728cd50 -[NSArray makeObjectsPerformSelector:] + 224

6 UIKit 0x0000000107ebb4eb -[UINib instantiateWithOwner:options:] + 1506

7 UIKit 0x0000000107d136d8 -[UIViewController _loadViewFromNibNamed:bundle:] + 242

8 UIKit 0x0000000107d13cc8 -[UIViewController loadView] + 109

9 UIKit 0x0000000107d13f39 -[UIViewController loadViewIfRequired] + 75

10 UIKit 0x0000000107d143ce -[UIViewController view] + 27

11 UIKit 0x0000000107c2f289 -[UIWindow addRootViewControllerViewIfPossible] + 58

12 UIKit 0x0000000107c2f64f -[UIWindow _setHidden:forced:] + 247

13 UIKit 0x0000000107c3bde1 -[UIWindow makeKeyAndVisible] + 42

14 UIKit 0x0000000107bdf417 -[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 2732

15 UIKit 0x0000000107be219e -[UIApplication _runWithMainScene:transitionContext:completion:] + 1349

16 UIKit 0x0000000107be1095 -[UIApplication workspaceDidEndTransaction:] + 179

17 FrontBoardServices 0x000000010a9ac5e5 __31-[FBSSerialQueue performAsync:]_block_invoke_2 + 21

18 CoreFoundation 0x000000010727841c __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 12

19 CoreFoundation 0x000000010726e165 __CFRunLoopDoBlocks + 341

20 CoreFoundation 0x000000010726d923 __CFRunLoopRun + 851

21 CoreFoundation 0x000000010726d366 CFRunLoopRunSpecific + 470

22 UIKit 0x0000000107be0b02 -[UIApplication _run] + 413

23 UIKit 0x0000000107be38c0 UIApplicationMain + 1282

24 MealApp 0x0000000107144d67 main + 135

25 libdyld.dylib 0x00000001095e5145 start + 1

26 ??? 0x0000000000000001 0x0 + 1

)

libc++abi.dylib: terminating with uncaught exception of type NSException

(lldb)

Seems to fail once I add in a textField. And I have added the delegation stuff.

Any clue? I'm a newbie.

-----------------------------

XCode 6.4

OSX Yosemite 10.10.5 on MacBook (Retina, 12-inch, Early 2015)

Boost

Answer 1

jsslai OP

Aug ’15

Check what outlets are defined in Interface Builder. I would guess there is an outlet without a connection in IB.

0

Answer 2

DTS Engineer OP

Apple

Aug ’15

Actually it’s the opposite: there’s a connection without a valid outlet.

UIKit is trying to load the nib (frames 4 through 6) and, as part of that, is trying to wire up the connection from

ViewController

’s

someTextField

property to some object (presumably a text field) within the nib. The problem is that

ViewController

has no

someTextField

property, or its not correctly flagged as an outlet.

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—
Quinn "The Eskimo!"
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

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0

Answer 3

nclman OP

Aug ’15

Thanks! You are exactly right. There were outlets pointing to invalid objects.

I removed them and things work now.

-----------------------------

XCode 6.4

OSX Yosemite 10.10.5 on MacBook (Retina, 12-inch, Early 2015)

0