Left Bar Button Item - show name of previous View Controller

Question

If you have a Navigation Controller with no Bar Button Items, a navigation back button will be shown with the name of the last View Controller.

I want to keep that name, as in I don't want to have to hardcode it. I do know how to add it in but I don't want to have to do that because that leaves more room for bugs.

Is there a way that I can have a left Bar Button Item and for the default one to not go away?

Solution

Add this in viewController where you want to have default back button and custom bar button item. You can customise the bar button item.

override func viewDidLoad() {
    super.viewDidLoad()
    let newBtn = UIBarButtonItem(title: "new", style: .plain, target: self, action: #selector(anotherMethod))
    self.navigationItem.leftItemsSupplementBackButton = true
    self.navigationItem.leftBarButtonItem = newBtn//self.navigationItem.leftBarButtonItems = [newBtn,anotherBtn]
}