Black screen after presenting modal view controller in current context from UITabBarController

Question

My root view controller is a UITabBarController. I\'m trying to present a modal view controller over one of the tab bar controller\'s view controllers, but still allow the

Answer 1

I have same problem in currently live swift project. I have did workaround on that.

Then finally i have used NSNotificationCenter and dismiss that view controller when tab is changed to solve this problem.

I have referenced tabbar controller in AppDelegate and set delegate there.

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

let tabbarcontroller = storyboard.instantiateViewControllerWithIdentifier("MyTabBarController") as! UITabBarController

tabbarcontroller.delegate = self

And it's delegate as

//MARK: - Tabbar controller delegate

extension AppDelegate : UITabBarControllerDelegate {

    func tabBarController(tabBarController: UITabBarController, didSelectViewController viewController: UIViewController) {

        NSNotificationCenter.defaultCenter().postNotificationName("TabBarTabChanged", object: nil)
    }
}

Then I have add observer in my presented view controller as

override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
        NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(PreviewPlaceVC.BackClickAction(_:)), name: "TabBarTabChanged", object: nil)
}

// MARK: - Button Click Actions

@IBAction func BackClickAction(sender: AnyObject) {
     self.dismissViewControllerAnimated(true, completion: nil)
}

And it's work fine for me. Not a proper solution I think to dismiss view controller on tab change event, but it is ok to dismiss rather than black screen which also breaks navigation that time.