Ios 如何使此按钮以编程方式打开新的导航控制器？

如何使此按钮打开新的导航控制器？我想让它从右边强制打开一个新的控制器

我需要以编程方式完成这一切，而不是使用故事板

@objc func buttonAction(sender: UIButton!) {
    let loginDetailController = UIViewController()
    navigationController?.pushViewController(loginDetailController, animated: true)
    print("Button tapped")
}

下面是当用户未登录时，使我正在编辑的视图控制器弹出的代码。此代码位于rootview控制器中

func checkIfUserIsLoggedIn() {
    if Auth.auth().currentUser?.uid == nil {
        perform(#selector(handleLogout), with: nil,
                        afterDelay: 0)
    }else{
        let uid = Auth.auth().currentUser?.uid
        Database.database().reference().child("users").child(uid!).observeSingleEvent(of: .value, with: {(snapshot) in

            if let dictionary = snapshot.value as? [String: AnyObject] {
                self.navigationItem.title = dictionary["name"] as? String
                self.navigationController?.navigationBar.titleTextAttributes = [NSAttributedStringKey.foregroundColor: UIColor.white]
                self.navigationController?.navigationBar.prefersLargeTitles = true
                self.navigationController?.navigationBar.largeTitleTextAttributes = [NSAttributedStringKey.foregroundColor: UIColor.white]



            }

            },withCancel: nil)

    }

}
override func didMove(toParentViewController parent: UIViewController?) {
    checkIfUserIsLoggedIn()
}

@objc func handleLogout() {

    do {
        try Auth.auth().signOut()
    } catch let logoutError {
        print(logoutError)
    }
    let loginController  = TwoLoginController()
    present(loginController, animated: true, completion:
    nil)
}

func handleLogin() {
    guard let email = emailTextField.text, let password = passwordTextField.text else{
        print("invalid form")
        return
    }
    Auth.auth().signIn(withEmail: email, password: password) { (user, error) in

        if error != nil {
            print(error!)
            return
        }
        //logged in
        self.dismiss(animated: true, completion: nil)
        self.navigationController?.dismiss(animated: true, completion: nil)
    }

}

}

这里是我添加导航控制器的位置

func checkIfUserIsLoggedIn() {
    if Auth.auth().currentUser?.uid == nil {
        perform(#selector(handleLogout), with: nil,
                        afterDelay: 0)
    }else{
        let uid = Auth.auth().currentUser?.uid
        Database.database().reference().child("users").child(uid!).observeSingleEvent(of: .value, with: {(snapshot) in

            if let dictionary = snapshot.value as? [String: AnyObject] {
                self.navigationItem.title = dictionary["name"] as? String
                self.navigationController?.navigationBar.titleTextAttributes = [NSAttributedStringKey.foregroundColor: UIColor.white]
                self.navigationController?.navigationBar.prefersLargeTitles = true
                self.navigationController?.navigationBar.largeTitleTextAttributes = [NSAttributedStringKey.foregroundColor: UIColor.white]



            }

            },withCancel: nil)

    }

}
override func didMove(toParentViewController parent: UIViewController?) {
    checkIfUserIsLoggedIn()
}

@objc func handleLogout() {

    do {
        try Auth.auth().signOut()
    } catch let logoutError {
        print(logoutError)
    }
    let loginController  = TwoLoginController()
    present(loginController, animated: true, completion:
    nil)
}

func handleLogin() {
    guard let email = emailTextField.text, let password = passwordTextField.text else{
        print("invalid form")
        return
    }
    Auth.auth().signIn(withEmail: email, password: password) { (user, error) in

        if error != nil {
            print(error!)
            return
        }
        //logged in
        self.dismiss(animated: true, completion: nil)
        self.navigationController?.dismiss(animated: true, completion: nil)
    }

}

新方法

故事板

首先创建一个自定义viewController类的新文件。对于本例，我们将其称为YourCustomViewController。然后转到情节提要并向情节提要添加新的viewController。选择该ViewController并为其指定ID并设置其类。完成后，将以下代码放入函数中：

let controller = self.storyboard!.instantiateViewController(withIdentifier: "Your View's Identifier") as! YourCustomViewController
self.navigationController!.pushViewController(controller, animated: true)

没有故事板：

在AppDelegate中

在您的行动中呈现视图

---

经过讨论，了解更多情况。这就是在新NavigationController中以编程方式显示ViewController的方式

然后，要在最后销毁导航控制器，应该如下所示：

self.navigationController?.dismiss(animated: true) {
     // 
}

---

当登录完成时，当您需要转到下一个视图时，请执行此操作。

我实际上是以编程方式编写所有内容，因此我没有故事板。如何以编程方式获得相同的结果？我认为没有故事板很好。你应该确认这家伙是一个不可思议的资源。我真的很感谢你的帮助，但当我点击按钮时，什么都没有发生。有什么想法吗？在AppDelegate中将rootViewController设置为UINavigationController吗？好的，现在loginController在尝试登录后无法关闭。我认为这是因为您将其设置为根ViewControllert，这是您希望嵌入到NavigationController中的控件，对吗？是的，导航控制器需要是登录控制器的一部分，然后在登录控制器被解除后解除。不完全是这样。我编辑了这篇文章，所以你可以看到我在哪里添加了导航。它仍然不是解雇删除第一次解雇

@objc func handleLogout() {

    do {
        try Auth.auth().signOut()
    } catch let logoutError {
        print(logoutError)
    }
    let loginController  = TwoLoginController()
    let navVC = UINavigationController(rootViewController: loginController)
    present(navVC, animated: true, completion: nil)
}

self.navigationController?.dismiss(animated: true) {
     // 
}