ios - 如何在添加为更多导航 Controller 的导航 Controller 上设置标题

Question

我有 6 个 View Controller ，并且正在使用 UiTabbar View 。因此，在主屏幕上，选项卡中显示了 4 个 View Controller 的数量，操作系统创建了另一个 View Controller 并将其命名为 more。

单击“更多”后，它向我显示了 UiTableView 内的 2 个 View Controller 。当我单击它们时，它会打开我的 View Controller ，其顶部有导航 Controller ，后退按钮标记为“更多”

完整理解见下图

What I Want: Here you can see that More is just visible with the Back button, I want to only show the Back button and I want center title with the label of "Offers" in white text

更新1:

Calling this method in ViewWillDisplay()

    func setUpNavBar(title: String,backBtn : String) -> Void {


    let backButton = UIBarButtonItem(title: " ", style: .plain, target: nil, action: nil)
    navigationItem.backBarButtonItem = backButton

    navigationController?.navigationBar.tintColor = UIColor.white

    let titleStr = title

    self.navigationItem.title = titleStr
    self.navigationItem.titleView?.backgroundColor = UIColor.red


    let titleLabel = UILabel()
    titleLabel.textColor = .white
    titleLabel.text = titleStr
    self.navigationItem.titleView = titleLabel



    self.navigationController?.navigationBar.barTintColor = CommonUtils.hexStringToUIColor(hex: AppColor.colorTwentyScaleDarkerOfColorPrimaryDark)

    if var textAttributes = navigationController?.navigationBar.titleTextAttributes {
        textAttributes[NSAttributedString.Key.foregroundColor] = UIColor.white
        navigationController?.navigationBar.titleTextAttributes = textAttributes
    }
}

Answer 1

在 OffersViewController 中:

override func viewWillAppear(_ animated: Bool) {
        self.title = "Offers"
    }

在之前的ViewController中

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

您也可以尝试这个:

override func viewWillAppear(_ animated: Bool) {
        let titleLabel = UILabel()
        titleLabel.textColor = .white
        titleLabel.text = self.title
        self.navigationItem.titleView = titleLabel
}