Instantiate ViewController when using Storyboard

Question

I am using Storyboard and want to push a view controller for display in UITabBarController at the click of tab bar item.

For this, I am using an existing ViewController linked to TabBarController created on Storyboard and using below code. However, I get exception, Storyboard doesn't contain a view controller with identifier 'SwitchViewController'

func tabBarController(tabBarController: UITabBarController, shouldSelectViewController viewController: UIViewController) -> Bool {

        let switchViewController = self.storyboard?.instantiateViewControllerWithIdentifier("SwitchViewController")
        self.presentViewController(switchViewController, animated: true, completion: nil)
        return false
    }

UPDATE: I added Storyboard ID for SwitchViewController in Main.storyboard and commented the above code. App Failed with same error when I moved to this tab

I am using iOS 8 and Xcode 7. Kindly help

I was using correct code, but my first ViewController was missing the rootViewController relationship from NavigationController that caused this issue. — Sategroup
– Sategroup, Commented Sep 5, 2015 at 9:35

score 3 · Accepted Answer · 2015-09-05 08:44:24Z

3

Check your Storyboard ID,

Try this one,

func tabBarController(tabBarController: UITabBarController, shouldSelectViewController viewController: UIViewController) -> Bool {

    if viewController is SwitchViewController {
        let switchViewController = self.storyboard?.instantiateViewControllerWithIdentifier("SwitchViewController") as! SwitchViewController
        self.presentViewController(switchViewController, animated: true, completion: nil)
        return false
    }

    return true
}

edited Sep 5, 2015 at 8:44

answered Sep 5, 2015 at 8:20

user2461812

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5 Comments

Sategroup Over a year ago

I guess you meant to write viewController is SwitchViewController. Anyway, even this code fails. Still same error. Problem is no matter what I do, it always complain, "Unable to find Identifier in the view". I have a UITabBarController and SwitchViewController is attached to tab bar

Sategroup Over a year ago

Could you please list out your steps? Because, for me it fails even if I just add Storyboard ID in the storyboard. What is your version of Xcode?

Sategroup Over a year ago

I tried with a new project and it worked too. But, then what is wrong with my existing project? Before I started the app, I had deleted the default view controller provided by Xcode and instead, used new view controller. Could that be the problem?

user2461812 Over a year ago

That's good to hear. May be, yes. I don't know exactly. I think it is better not to spend your time to trivial and not important things.

Sategroup Over a year ago

It worked. Mistakenly, I had deleted Main.storyboard a week before and after restoring it, I guess the rootViewController info was lost. I did notice some screens breaking, but thought I might lost some connections. 'After re-initiating the rootViewController connection, it finally worked.`

Yannik · Accepted Answer · 2015-09-05 07:53:09Z

0

Try the following code: let storyboard = UIStoryboard(name: "Main", bundle: nil) let VC = storyboard.instantiateViewControllerWithIdentifier("SwitchViewController")

answered Sep 5, 2015 at 7:53

Yannik

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1 Comment

Sategroup Over a year ago

Tried. Doesn't work. I get the storyboard object, but inside it, it's not able to find the ViewController

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