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I have authorization window. When app is starting it is okey. I tap sign in and go to the next window. But when I tap sign out and want to back at authorization window - I get nil. In the method signinView controller is nil.

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Simon McLoughlin
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Kirill Baranov
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    Please post your [mcve] as text marked up as code and not a picture. Making it a picture prevents us from copying and pasting the code and diminishes our ability to help you. – NathanOliver Jul 11 '16 at 13:09
  • you provide huge amount of information , we can't just assume that how you showing your view controller . please post code – Prashant Tukadiya Jul 11 '16 at 13:09
  • The most important thing is that you shouldn't access storyboard like this: `self.window?.rootViewController!.storyboard?`. This is the worst approach i have ever seen. if anything is nil, either application will crash (to unwrap) – Asif Bilal Jul 12 '16 at 08:05

2 Answers2

8

you need to take instance from Storyboard. 

 let storyboard = UIStoryboard(name: "Main", bundle: nil)

let controller = storyboard.instantiateViewControllerWithIdentifier(“MyController”)

In this way you will get your controller instance.

Make sure you already set storyboard ID for this controller.

enter image description here

Bilawal Liaqat
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  • I met this when I'm mixed to use IB and coding programmatically. In some pure code VC, I need to declare the storyboard then to instantiate another VC, otherwize that vc will not be opened. – Zhou Haibo Jun 24 '21 at 08:52
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Just replace below code in function's second line and hope it will solved your problem.

let storyboard = UIStoryboard(name: "Main", bundle: nil)//Make it global
let controller = storyboard!.instantiateViewControllerWithIdentifier("your identifer")
Amit Jagesha シ
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