如果你正在为视图控制器使用xib文件，那么在你的视图控制器类中这样做。

class AboutUsViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()
    edgesForExtendedLayout = []
    setUpNavBar()
}

func setUpNavBar(){
    //For title in navigation bar
    self.navigationController?.view.backgroundColor = UIColor.white
    self.navigationController?.view.tintColor = UIColor.orange
    self.navigationItem.title = "About Us"

    //For back button in navigation bar
    let backButton = UIBarButtonItem()
    backButton.title = "Back"
    self.navigationController?.navigationBar.topItem?.backBarButtonItem = backButton
}

}

结果将是:

你可以在故事板中修改NavigationItem

在后退按钮中添加一个空格并按Enter。

注意:在之前的VC中这样做。

override func viewWillAppear(_ animated: Bool) {

    self.tabBarController?.navigationItem.title = "Notes"

    let sendButton = UIBarButtonItem(title: "New", style: .plain, target: self, action: #selector(goToNoteEditorViewController))

    self.tabBarController?.navigationItem.rightBarButtonItem = sendButton
}

func goToNoteEditorViewController(){
   // action what you want
}

希望能有所帮助!!3 #迅速

如果你正在为视图控制器使用xib文件，那么在你的视图控制器类中这样做。

class AboutUsViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()
    edgesForExtendedLayout = []
    setUpNavBar()
}

func setUpNavBar(){
    //For title in navigation bar
    self.navigationController?.view.backgroundColor = UIColor.white
    self.navigationController?.view.tintColor = UIColor.orange
    self.navigationItem.title = "About Us"

    //For back button in navigation bar
    let backButton = UIBarButtonItem()
    backButton.title = "Back"
    self.navigationController?.navigationBar.topItem?.backBarButtonItem = backButton
}

}

结果将是:

你可以从接口生成器这样做:

单击上一个视图控制器的导航项

在属性检查器中，将后退按钮文本设置为您想要的任何文本。这就是它! !

虽然这些答案解决了问题，但这可能是一些有用的

class MainNavigatioController: UINavigationController {

    override func pushViewController(_ viewController: UIViewController, animated: Bool) {
        // first
        let backItem = UIBarButtonItem()
        backItem.title = "رجوع"
        self.viewControllers.last?.navigationItem.backBarButtonItem = backItem
        // then
        super.pushViewController(viewController, animated: animated)

    }

}