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I have two view controllers in my application. Root view controller has some components and one of them is a button. That button provides to open another view controller using with present function. Second view controller(SelectTimeViewController) that opens when the button is tapped, was opened successfully. I am trying to set navigation title and items but I can not see them.

I did not use storyboard so root view controller is setting from AppDelegate.

let viewController = ViewController()
window = UIWindow(frame: UIScreen.main.bounds)
window?.rootViewController = UINavigationController(rootViewController: viewController)
window?.makeKeyAndVisible()

When tapped the button, "openVC" function is invoked.

@IBAction func openVC(_ sender: Any) {
    self.navigationController?.present(SelectTimeViewController(), animated: true, completion: nil)
}

I am trying to set title and rightBarButtonItem in SelectTimeViewController's viewDidLoad function but I can not see both of them.

override func viewDidLoad() {
        super.viewDidLoad()
        self.navigationItem.rightBarButtonItem = UIBarButtonItem(image: UIImage(named: "close"), style: .plain, target: self, action: #selector(closeIt))
        self.navigationItem.title = "Select Time"
}

In additional to this, I can see both title and right bar button item when change the "openVC" function like as bellow.

@IBAction func openVC(_ sender: Any) {
    self.navigationController?.pushViewController(vc, animated: true)
}
Nilay Keven
  • 13
  • 4

1 Answers1

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You have to push the SelectTimeViewController instead of present

Or if you really want to present it, you should present another UINavigationController that has the rootViewController as SelectTimeViewController()

Nour Sandid
  • 78
  • 6
  • This solution worked but there are some things I was wondering. Why we need to use 2 UINavigationController? Is it the right way to present a view? – Nilay Keven Oct 16 '19 at 16:27
  • Think of it as flows or stories. Every navigation controller contains a full flow, and whenever you want to start a new flow you present a new navigationController where you push all the pages in it and then you dismiss everything from this flow – Nour Sandid Oct 16 '19 at 20:41