Xcode 11: cannot instantiate view controller from storyboard with identifier

Question

I'm using Xcode 11.1 and my deployment target is iOS 10.0

I can't instantiate a view controller like before. Here is the code in

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]?) -> Bool

let storyboard = UIStoryboard(name: "Main", bundle: nil)
let viewController = storyboard.instantiateViewController(identifier: "TabBarController")

I get the error saying:

'instantiateViewController(identifier:creator:)' is only available in iOS 13.0 or newer

How possibly can one instantiate view controllers from storyboard programmatically on Xcode 11.1. Any other way?

Please check your `Deployment target`. I think it is lower than 13.0 so you can not use this methods. — Mahendra, Oct 09 '19 at 06:54
thanks @Mahendra. I solved it by changing `identifier:` to `withIdentifier` for iOS versions below 13 — Suh Fangmbeng, Oct 09 '19 at 07:13

score 40 · Accepted Answer · answered Oct 09 '19 at 06:53

40

You need to use

storyboard.instantiateViewController(withIdentifier: "TabBarController")

the new instantiateViewController(identifier: "TabBarController") is only available on iOS 13 and returns ViewController instead of UIViewController as you can see here

answered Oct 09 '19 at 06:53

Reinier Melian

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thanks man, that was great catch with `withIdentifier:` and `identifier:` – Suh Fangmbeng Oct 09 '19 at 07:09
Thanks Melian.. reason ?? – iMRahib May 21 '20 at 05:08
How then, are you supposed to call instantiateInitialViewController og iOS < 13? They are identical in that list! – Jesper Schläger Sep 04 '20 at 08:16
@JesperSchläger is matter of what that method returns, if you are using SwiftUI is `ViewController` and if you are using UIKit then is `UIViewController` – Reinier Melian Sep 04 '20 at 08:21
Thanks a lot. It saved the time. @Reinier, nice catch... – Rakshitha Muranga Rodrigo Oct 26 '20 at 13:15

score 6 · Answer 2 · answered Oct 09 '19 at 06:53

6

You should do following:

let viewController = storyboard.instantiateViewController(withIdentifier: "TabBarController")

parameter should be -withIdentifier- not -identifier-

answered Oct 09 '19 at 06:53

memtarhan

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Davender Verma · Answer 3 · 2020-08-20T04:20:58.670

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//use instantiateViewController(withIdentifier:"") method to resolve notinstantiateViewController(Identifier:"") 


 let objRef : RatindAndReviewVC = self.storyboard?.instantiateViewController(withIdentifier: "RatindAndReviewVC") as! RatindAndReviewVC

       self.navigationController?.pushViewController(objRef, animated: true)

edited Aug 20 '20 at 04:20

answered Aug 13 '20 at 09:52

Davender Verma

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Please don't post only code as answer, but also provide an explanation what your code does and how it solves the problem of the question. Answers with an explanation are usually more helpful and of better quality, and are more likely to attract upvotes. – Mark Rotteveel Aug 14 '20 at 10:39

Xcode 11: cannot instantiate view controller from storyboard with identifier

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