显示内部ViewController时NavigationBar右侧项目隐藏

Question

我将导航栏与tabbarcontroller一起使用。当我按下其中一个标签时，我的导航栏右侧项目会自动隐藏。

我如何将物品移至儿童控制者？

Answer 1

您可以创建基本视图控制器并从基本视图控制器继承子类，然后调用super.viewDidLoad()

1-基本控制器

class BaseViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        let myButton = UIBarButtonItem(title: "LogOut", style: .done, target: self, action: #selector(self.logoutTapped(_:)))
        self.navigationItem.rightBarButtonItem = myButton
    }

    @objc func logoutTapped(_ sender: UIBarButtonItem) {

        print("Logout clicked :) ")
    }
}

2- VC一

class ViewController: BaseViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

}

3- VC两个

class ViewController2: BaseViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

}

结果