iOS 8 Swift navigation bar title, buttons not showing in tab based application

Question

I am trying to follow this tutorial, this answer, and this answer to create navigation bars for each of my tabs in a tab-based application in iOS 8 / Swift, but no title or butt

Answer 1

I was unnecessarily creating two navigation bars. The navigation controller comes with a navigation bar, and I changed my ViewController to:

class ViewController: UIViewController, UINavigationBarDelegate {

    override func viewDidLoad() {
        super.viewDidLoad()

        self.navigationItem.title = "My Title"
        self.navigationItem.leftBarButtonItem = UIBarButtonItem(title: "Left Button", style:   UIBarButtonItemStyle.Plain, target: self, action: nil)
        self.navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Right Button", style: UIBarButtonItemStyle.Plain, target: self, action: nil)
    }

    func positionForBar(bar: UIBarPositioning) -> UIBarPosition {
        return UIBarPosition.TopAttached
    }

}