navigating to another controller using segue

Question

I have a button when clicked it will go to another controller using segue and its called "gosegue" and i'm sending some value with it ..

here is the error i get when i click on the button:

and i have doubled checked the segue..

i tried to remove performsegue and just print something and it worked fine!

can someone please tell me what i am doing wrong?

this what i got:

2018-05-08 09:33:26.776671+0300[4128:1912882] *** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<.LongtermorderViewController 0x11dc20e80> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key familybtn.'

search for `familybtn` in your project, you will find it. It's given in storyboard, but no corresponding IBOutlet / IBAction is declared in swift class — Ratul Sharker, May 08 '18 at 06:36
Check your `familybtn` i think you change its name it will have ! in StoryBord — Abdelahad Darwish, May 08 '18 at 06:36
Possible duplicate of [What does this mean? "'NSUnknownKeyException', reason: … this class is not key value coding-compliant for the key X"](https://stackoverflow.com/questions/3088059/what-does-this-mean-nsunknownkeyexception-reason-this-class-is-not-key-v) — Ratul Sharker, May 08 '18 at 06:37
@mrs.bassim Can you provide some information about your `LongtermorderViewController` class. I mean code — Mannopson, May 08 '18 at 06:39
try with sender:nil `self.performSegue(withIdentifier:"gosegue", sender:nil)` if this is not working then check my answer — Vivek, May 08 '18 at 07:01

score 1 · Accepted Answer · answered May 08 '18 at 06:49

There is no problem with the segue. You might have created an IBOutlet(familybtn) from LongtermorderViewController from the storyboard, then either removed it or modified it, but still the connection remains in the storyboard. That is why the app is crashing. Revisit all the connections of LongtermorderViewController in your storyboard. You will find '!' besides familybtn connection remove it and then build your application. It should work fine.

score 0 · Answer 2 · answered May 08 '18 at 06:55

0

Please open your "LongtermorderViewController" from storyboard and check IBOutlet of "familybtn".

answered May 08 '18 at 06:55

Vivek

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score 0 · Answer 3 · edited May 08 '18 at 14:01

You can follow this steps for an error free segue.If you are in same a storyBoard then you can simply do this - Take a button in your firstVC and ctrl + drag a segue upto your secondVC. Then click on the segue. (the round thing on between two view controller). -

And set a identifier for that (here about is the identifier, you can give any name for this)-

Here is the code -

@IBAction func UserDetailVC(sender: AnyObject) {
        self.performSegue(withIdentifier: "segueIdentifierName", sender: sender)
    }

navigating to another controller using segue

3 Answers3