无法在选项卡栏控制器下的视图控制器内自定义导航栏-解网

问：

我的选项卡栏控制器下有三个视图控制器。它们扩展了 BaseViewController 以进行导航自定义。在选项卡栏控制器之外的其他视图控制器中，BaseViewController 可以正常工作。但是在tabbar控制器的视图控制器中，任何更改都会反映出来，并且只显示带有默认后退按钮的默认导航栏。

我

    func configureSettingBtn() {
        let settingImage = UIImage(named: "settingIcon")
        let settingBtn = UIButton()
        settingBtn.setImage(settingImage, for: .normal)
        settingBtn.addTarget(self, action: #selector(settingApp), for: .touchUpInside)
        let setting = UIBarButtonItem(customView: settingBtn)
        
        navigationItem.rightBarButtonItems = [setting]
    }
    
    @objc func settingApp(sender: UIBarButtonItem) {
        
    }
    
    func configureInfoBtn() {
        let infoImage = UIImage(named: "infoIcon")
        let infoBtn = UIButton()
        infoBtn.setImage(infoImage, for: .normal)
        infoBtn.addTarget(self, action: #selector(infoAction), for: .touchUpInside)
        let info = UIBarButtonItem(customView: infoBtn)
        let spacer = createSpacer()
        
        self.navigationItem.rightBarButtonItems?.append(contentsOf: [spacer, info])
    }
    
    @objc func infoAction() {
        
    }
    
    func configureAnnounceBtn() {
        let announceImage = UIImage(named: "messageIcon")
        let announceBtn = UIButton()
        announceBtn.setImage(announceImage, for: .normal)
        announceBtn.addTarget(self, action: #selector(announceAction), for: .touchUpInside)
        let announce = UIBarButtonItem(customView: announceBtn)
        let spacer = createSpacer()
        
        self.navigationItem.rightBarButtonItems?.append(contentsOf: [spacer, announce])
    }
    
    @objc func announceAction() {
        
    }

我在 BaseViewController 中编写了这些函数并尝试使用它们，但它在选项卡栏下的视图控制器中不起作用。我尝试了我编写的代码，也尝试了在故事板中自定义导航栏，但失败了。我更喜欢代码工作。

我该如何解决这个问题？任何想法将不胜感激。

在选项卡栏控制器内为每个视图控制器中的按钮添加不同功能的想法也将不胜感激。

iOS Swift UITabbarController UIAningBar UIBARBUTTONITEM

class CustomNavigationController: UINavigationController, UINavigationControllerDelegate {
    override func viewDidLoad() {
        super.viewDidLoad()
        self.delegate = self
    }

    func navigationController(_ navigationController: UINavigationController, willShow viewController: UIViewController, animated: Bool) {
        if let viewController = viewController as? BaseViewController {
            viewController.configureSettingBtn()
            viewController.configureInfoBtn()
            viewController.configureAnnounceBtn()
        }
    }
}

此外，如果您希望每个子控制器在按下按钮时表现不同，请确保覆盖以下功能：

class ChildViewController: BaseViewController {
    override func configureSettingBtn() {
        super.configureSettingBtn()
        // Customize the button further if needed
        // Or set a different target action specific to this view controller
    }
    
    @objc override func settingApp(sender: UIBarButtonItem) {
        // Implement custom action for this view controller
    }
}

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无法在选项卡栏控制器下的视图控制器内自定义导航栏

Unable to customize my navigation bar inside the viewcontroller that is under a tabbar controller

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