How can I present VC and set as new Root viewController in Swift?

Question

I have this warning: Presenting view controllers on detached view controllers is discouraged

I need to know how can set my rootViewController in another VC and avoid this warning

I have this code in my VC:

@IBAction func dissmissInfo(_ sender: UIButton) {

    let storyboard = UIStoryboard(name: "Main", bundle: nil)
    let vc = storyboard.instantiateViewController(withIdentifier: "firstVC")
     present(vc, animated: true, completion: nil)
    })

And in the firstVC I have this:

    override func viewDidLoad() {
        super.viewDidLoad()

        UIApplication.shared.keyWindow?.rootViewController = self
}

but when I try to move to another VC I have the same warning: Presenting view controllers on detached view controllers is discouraged

Answer 1

You mean you want to set firstVC

let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "firstVC")

as the new RootViewController?

If YES:

@IBAction func dissmissInfo(_ sender: UIButton) {
     let storyboard = UIStoryboard(name: "Main", bundle: nil)
     let vc = storyboard.instantiateViewController(withIdentifier: "firstVC")
     UIApplication.shared.keyWindow?.rootViewController = vc 
})

Then in firstVC, remove

UIApplication.shared.keyWindow?.rootViewController = self