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)

    }

}

这应该可以工作:

override func viewDidLoad() {
    super.viewDidLoad()

    var button = UIBarButtonItem(title: "YourTitle", style: UIBarButtonItemStyle.Bordered, target: self, action: "goBack")
    self.navigationItem.backBarButtonItem = button

}

func goBack()
{
    self.navigationController?.popViewControllerAnimated(true)
}

虽然不建议这样做，因为这实际上取代了backButton，它也删除了后退箭头和滑动手势。

解决方案检查和工作在Swift 5

下面是针对不同情况的一些解决方案:

1. 从后退按钮中删除文本

从后退按钮中删除文本的最佳解决方案是在viewDidLoad()中添加:

navigationItem.backBarButtonItem = UIBarButtonItem()

2. 在返回按钮上设置自己的文本

如果你想设置你自己的标题，可以通过设置backButton的title:

let backButton = UIBarButtonItem()
backButton.title = "My Title"
navigationItem.backBarButtonItem = backItem

3.清空所有VC上的返回按钮

如果你想在整个应用程序中创建通用样式-只有箭头返回而没有文本，为所有的视图控制器创建基础VC:

class BaseViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()

        navigationItem.backBarButtonItem = UIBarButtonItem()
    }
}

上面给出的解决方案可以让你在将来自定义返回按钮，如果你以后想要做一些例外，通过添加额外的变量并在特定的ViewController中重写它，f.x:

class BaseViewController: UIViewController {

    var customBackButtonTitle: String?

    override func viewDidLoad() {
        super.viewDidLoad()

        var backButton = UIBarButtonItem()
        if let text = customBackButtonTitle {
            backButton.title = text
        }
        navigationItem.backBarButtonItem = backButton
    }
}

自我。标题= "" 之前self.navigationController ?。pushViewController(vc, animated: true)。

Swift 4 -在按任何视图控制器之前配置后退按钮

// if you want to remove the text
navigationItem.backBarButtonItem = UIBarButtonItem()

// if you want to modify the text to "back"
navigationItem.backBarButtonItem = UIBarButtonItem(title: "back", style: .plain, target: nil, action: nil)

斯威夫特4

在我的案例中，解决方案是在移动到子视图控制器之前清除主视图控制器的导航项。如果再次显示，请重新设置

MasterController

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    navigationItem.title = "Master Title"
}

override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)
    navigationItem.title = ""
}

这就是我如何推送一个UIViewController并清除子控制器中的后栏按钮项:

MasterController

let childController = ChildController(collectionViewLayout: UICollectionViewFlowLayout())
childController.navigationItem.backBarButtonItem?.title = ""
navigationController?.pushViewController(childController, animated: true)