How to show the tittle in navigation bar programmatically in swift3 - swift3

Question

I just try to extend my height of navigation bar...I tried that code below, Its working fine....but it can't able to show the title? I tried self.title ="" and self.navigationitem.title ="" also......
self.navBar.tintColor = UIColor.blue
// self.navigationItem.title = "Instrumental"
self.title = "Instrumental"
navBar.titleTextAttributes = [NSForegroundColorAttributeName:UIColor.white]
let backButton = UIButton(type: .custom)
backButton.frame = CGRect(x: 380, y: 15, width: 30, height: 30)
backButton.setImage(UIImage(named:"vertical-dots (1)"), for: .normal)
// backButton.addTarget(self, action: #selector(ViewController.backButton(_:)), for: .TouchUpInside)
navBar.addSubview(backButton)
func setNavBarToTheView() {
self.navBar.frame = CGRect(x:0, y:0, width:420, height:60) // Here you can set you Width and Height for your navBar
self.navBar.backgroundColor = (UIColor.blue)
self.view.addSubview(navBar)
}

Answer 1

You can add title programmatically for navigation bar like this : -
Swift 3
override func viewDidLoad() {
super.viewDidLoad()
self.title = "First View"
}

Answer 2

It appears that you are manually adding a UINavBar to the view. When you do that you lose all of the automatic features when you put your view controller into a navigation controller.
To set the title of your nav bar you need to also create a UINavigationItem and set it to the nav bar's items property.
Things really would be a lot simpler if you put your view controller in a navigation controller. Then you get all of the default behavior including a standard nav bar without the need to do all the work of adding your own.