presentViewController and displaying navigation bar

Question

I have a view controller hierarchy and the top-most controller is displayed as a modal and would like to know how to display the navigation bar when using

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Answer 1

If you use NavigationController in Swift 2.x

let storyboard = UIStoryboard(name: "Main", bundle: nil)
let targetViewController = storyboard.instantiateViewControllerWithIdentifier("targetViewControllerID") as? TargetViewController
self.navigationController?.pushViewController(targetViewController!, animated: true)