UIViewController setValue:forUndefinedKey: with deleted xib

Question

I recently deleted the xib for a particular UIViewController subclass. However, since then I have been getting the following error on device only, and not simulator:

*** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<CustomWebViewController 0x192494d0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key btnBack.'

I had set btnBack as an IBOutlet before in the XIB, and have since removed that property.

The XIB is deleted and I have cleaned the project countless times, but this issue still persists.

How can I go about finding where in my code this property is being set, or cleaning up this issue in XCode?

EDIT: To make this clear:

The xib used to exist, but has since been deleted.
All IBOutlet properties have been deleted as well.
The instantiation of the viewController happens using only code.
If I had not deleted the properties then this would not have happened.
This is probably an XCode bug, and I am hoping someone has faced this issue as well and solved it.

Yesterday I answered for this question for someone. http://stackoverflow.com/questions/33893344/nsunknownkeyexception-error-in-app-delegate/33894205#33894205 refer this link. — user3182143, Nov 25 '15 at 07:16
I know about this fix. But my situation is different. The point is that the XIB has been deleted altogether and is not being referenced anywhere in the code — ZeMoon, Nov 25 '15 at 07:17
Check whether you are instantiating the view controller from the nib even after deleting the nib. — iamyogish, Nov 25 '15 at 07:19
Yes, I have checked the same... the xib does not exist at all, and no reference to it either — ZeMoon, Nov 25 '15 at 07:22
Have u deleted just xib or its UIViewController class also.. ?? — luckyShubhra, Nov 25 '15 at 07:25
I have deleted the XIB only (the viewcontroller now is instantiated only using code), this is an XCode bug, and I am hoping someone has faced this issue beforehand, — ZeMoon, Nov 25 '15 at 07:26
Is this your FirstViewController(Home or RootViewController)? — user3182143, Nov 25 '15 at 07:29
Where does this happen? I mean does it happen when you navigating from one view to another view? — user3182143, Nov 25 '15 at 07:35
This happens when instantiating the CustomWebViewController using `[[CustomWebViewController alloc] init]` — ZeMoon, Nov 25 '15 at 07:36
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/96115/discussion-between-user3182143-and-zemoon). — user3182143, Nov 25 '15 at 07:37

score 0 · Answer 1 · answered Nov 25 '15 at 07:20

0

Please have a look at connection inspector. Is View properly connected to File's owner and btnBack connection removed properly?

answered Nov 25 '15 at 07:20

Vinu David Jose

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The XIB has been deleted, and now everything is being set in code. But I am still getting this issue. – ZeMoon Nov 25 '15 at 07:21
Am confused! Is there an IBOutlet before your declaration? – Vinu David Jose Nov 25 '15 at 07:25
The property used to exist when the xib was being used, now the xib as well as the property have been deleted – ZeMoon Nov 25 '15 at 07:26
This is an XCode bug, but I am hoping someone has encountered the same – ZeMoon Nov 25 '15 at 07:26

score 0 · Accepted Answer · answered Nov 26 '15 at 08:56

I don't know what really happened, but I hadn't yet overridden the -init method int the class.

After overriding all the init methods like so:

-(instancetype)init
{
    if (self = [super init])
    {

    }

    return self;
}

-(instancetype)initWithCoder:(NSCoder *)aDecoder
{
    if (self = [super initWithCoder:aDecoder])
    {

    }

    return self;
}

-(instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil])
    {

    }

    return self;
}

Everything worked fine.

UIViewController setValue:forUndefinedKey: with deleted xib

2 Answers2