How to correctly dismiss a UINavigationController that's presented as a modal?

Question

In my TabBarViewController, I create a UINavigationController and present it as a modal.

var navController =  UINavigationController()
let messageVC         


        

Answer 1

No need to have member for navController. Use following code to present your MessagesViewController.

let messageVC = self.storyboard?.instantiateViewControllerWithIdentifier("MessagesViewController") as! MessagesViewController
let pesentingNavigationController = UINavigationController(rootViewController: messageVC)
self.presentViewController(pesentingNavigationController, animated: true, completion: nil)

Your dismiss view controller code will be

func swipedRightAndUserWantsToDismiss() {
  self.navigationController.dismiss(animated: true, completion: nil)
}