UINavigationController “back button” custom text?

Question

The \"back button\" of a UINavigationController by default shows the title of the last view in the stack. Is there a way to have custom text in the back button

Answer 1

if You want to set title in ARRIVING controller (sometimes more logic..) in swift 3 do:

func setBackButtonNavBar(title: String, delay: Double){

    let when = DispatchTime.now() + delay
    DispatchQueue.main.asyncAfter(deadline: when, execute: { () -> Void in

        if let navBar = self.navigationController?.navigationBar{
            navBar.backItem?.title = title
        }
    })

}

in upcoming controller:

override func viewDidLoad() {
    super.viewDidLoad()
    self.setBackButtonNavBar(title: "back", delay: 0.3)
}

usually I put self.setBackButtonNavBar in a controller extension.