how to create back button in navigation bar

Question

I have 2 page. first is tableView and second is view when I to click on any cell go on to next page (view) in way modal segue. I want add back button in next page of navigat

Answer 1

Swift 3

let backButton: UIBarButtonItem = UIBarButtonItem(title: "Back", style: .plain, target: self, action: #selector(back))
    self.navigationItem.leftBarButtonItem = backButton

func back() {
    self.dismiss(animated: true, completion: nil) }