backBarButtonItem in iOS (Swift)

Question

var backButton: UIBarButtonItem = UIBarButtonItem(title: "CUSTOM", style: UIBarButtonItemStyle.Bordered, target: self, action: nil)
    newNavigationItem.backBarButtonItem = backButton

Where is newNavigationItem: UINavigationItem

I want custom back title. It shows "Back" text or "Title of last view". So it does not work. Why?

Answer 1

The method that Yogesh Suthar said will replace the whole back button, so you will not have the default left arrow sign! I suggest to use this code:

navigationController?.navigationBar.topItem?.backBarButtonItem = backButton

Answer 2

Use leftBarButtomItem

newNavigationItem.backBarButtonItem = backButton

should be

newNavigationItem.leftBarButtonItem = backButton