从xCode上的swift/编码开始，在什么时候我可以使用segue将我带到我的homeVC？

当我无法切换到一个新的VC时，我正在跟随一个教程

所讨论的序列：

self.performsgue（带有标识符：“goHomeVC”，发送者：self）

我试图在

@IBAction didTapButton

函数中使用它，但它不起作用，我想不出还能把它放在哪里。点击该按钮后，当用户登录时，屏幕上的所有内容都会隐藏，但我想让它转到homeVC

import UIKit
import FirebaseAuth

class LoginVC: UIViewController, UITextFieldDelegate {


    private let companyLogo = UIImageView(image: UIImage(named: "Company Logo White.png")!);
    private let signInLogo = UIImageView(image: UIImage(named: "SignInText.png")!);


    private let emailField: UITextField = {
        let emailField = UITextField()
        emailField.placeholder = "Email Address"
        emailField.layer.borderWidth = 1
        emailField.autocapitalizationType = .none
        emailField.layer.borderColor = UIColor.white.cgColor
        emailField.backgroundColor = .white
        emailField.leftViewMode = .always
        emailField.leftView = UIView(frame: CGRect(x: 0, y: 0, width: 5, height: 0))
        return emailField
    }()

    private let passwordField: UITextField = {
        let passwordField = UITextField()
        passwordField.placeholder = "Password"
        passwordField.layer.borderWidth = 1
        passwordField.isSecureTextEntry = true
        passwordField.layer.borderColor = UIColor.white.cgColor
        passwordField.backgroundColor = .white
        passwordField.leftViewMode = .always
        passwordField.leftView = UIView(frame: CGRect(x: 0, y: 0, width: 5, height: 0))
        return passwordField
    }()

    @IBOutlet weak var button: UIButton!


    private let signOutButton: UIButton = {
        let button = UIButton()
        button.backgroundColor = .systemBlue
        button.setTitleColor(.white, for: .normal)
        button.setTitle("Log Out", for: .normal)

        return button
    }()

    override func viewDidLoad() {
        super.viewDidLoad()


        emailField.delegate = self
        passwordField.delegate = self


        NotificationCenter.default.addObserver(self, selector:
            #selector(keyboardWillChange), name: UIResponder.keyboardWillShowNotification, object: nil)
        NotificationCenter.default.addObserver(self, selector:
            #selector(keyboardWillChange), name: UIResponder.keyboardWillHideNotification, object: nil)
        NotificationCenter.default.addObserver(self, selector:
            #selector(keyboardWillChange), name:UIResponder.keyboardWillChangeFrameNotification, object: nil)



        view.addSubview(companyLogo)
        view.addSubview(signInLogo)
        view.addSubview(emailField)
        view.addSubview(passwordField)
        view.addSubview(button)
        button.addTarget(self, action: #selector(didTapButton), for: .touchUpInside)

        if FirebaseAuth.Auth.auth().currentUser != nil {


            companyLogo.isHidden = true
            signInLogo.isHidden = true
            emailField.isHidden = true
            passwordField.isHidden = true
            button.isHidden = true

            view.addSubview(signOutButton)
            signOutButton.frame = CGRect(x: 20, y: 150, width: view.frame.size.width-40, height: 52)
            signOutButton.addTarget(self, action: #selector(logOutTapped), for: .touchUpInside)
        }
    }

    @objc private func logOutTapped(){
        do {
            try FirebaseAuth.Auth.auth().signOut()

            companyLogo.isHidden = false
            signInLogo.isHidden = false
            emailField.isHidden = false
            passwordField.isHidden = false
            button.isHidden = false

            signOutButton.removeFromSuperview()
        }
        catch {
            print("An error occurred")
        }
    }

    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()



        companyLogo.frame = CGRect(x: 0,
                                y: 125,
                                width: 179,
                                height: 141)


        companyLogo.center.x = self.view.center.x // for horizontal
        //myButton.center.y = self.view.center.y // for vertical


        signInLogo.frame = CGRect(x: 0,
                            y: companyLogo.frame.origin.y+signInLogo.frame.size.height+150,
                            width: 110,
                            height: 36)
        signInLogo.center.x = self.view.center.x



        emailField.frame = CGRect(x: 20,
                                y: signInLogo.frame.origin.y+signInLogo.frame.size.height+50,
                                width: view.frame.size.width-40,
                                height: 50)
        emailField.addLayerEffects(cornerRadius: 5)



        passwordField.frame = CGRect(x: 20,
                                    y: emailField.frame.origin.y+emailField.frame.size.height+10,
                                    width: view.frame.size.width-40,
                                    height: 50)
        passwordField.addLayerEffects(cornerRadius: 5)



        button.frame = CGRect(x: 20,
                            y: passwordField.frame.origin.y+passwordField.frame.size.height+30,
                            width: view.frame.size.width-40,
                            height: 52)
        button.addLayerEffects(cornerRadius: 4)

    }

    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        if FirebaseAuth.Auth.auth().currentUser == nil {
            //emailField.becomeFirstResponder()
        }
    }



    @IBAction func didTapButton(_ sender: Any) {
        print("Continue button tapped")
        guard let email = emailField.text, !email.isEmpty,
            let password = passwordField.text, !password.isEmpty else {
                print("missing field data")
                //self.performSegue(withIdentifier: "goHomeVC", sender: self)
                return
    }




        FirebaseAuth.Auth.auth().signIn(withEmail: email, password: password, completion: { [weak self] result, error in
            guard let strongSelf = self else {
                return
            }

            guard error == nil else {
                // show account creation
                strongSelf.showCreateAccount(email: email, password: password)
                return
            }

            print("You have signed in")

            strongSelf.signInLogo.isHidden = true
            strongSelf.emailField.isHidden = true
            strongSelf.passwordField.isHidden = true
            strongSelf.button.isHidden = true

            strongSelf.emailField.resignFirstResponder()
            strongSelf.passwordField.resignFirstResponder()

        })

    }

    func showCreateAccount(email: String, password: String) {
        let alert = UIAlertController(title: "Create Account",
                                    message: "Would you like to create an account?",
                                    preferredStyle: .alert)
        alert.addAction(UIAlertAction(title: "Continue",
                        style: .default,
                        handler: {_ in

                            FirebaseAuth.Auth.auth().createUser(withEmail: email, password: password, completion: { [weak self] result, error in

                                guard let strongSelf = self else {
                                    return
                                }

                                guard error == nil else {
                                    // show account creation
                                    print("Account creation failed")
                                    return
                                }

                                print("You have signed in")

                                strongSelf.signInLogo.isHidden = true
                                strongSelf.emailField.isHidden = true
                                strongSelf.passwordField.isHidden = true
                                strongSelf.button.isHidden = true

                                strongSelf.emailField.resignFirstResponder()
                                strongSelf.passwordField.resignFirstResponder()

                            })

        }))
        alert.addAction(UIAlertAction(title: "Cancel",
                        style: .cancel,
                        handler: {_ in

        }))

        present(alert, animated: true)
    }



    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        emailField.resignFirstResponder()
        passwordField.resignFirstResponder()
        return true
    }


    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        self.view.endEditing(true)
    }


    @objc func keyboardWillChange(notification: Notification) {




        guard let keyboardRect = (notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue
                else {
                    return
                }

        if notification.name == UIResponder.keyboardWillShowNotification || notification.name == UIResponder.keyboardWillChangeFrameNotification {


            view.frame.origin.y = -245
        } else {

            view.frame.origin.y = 0
        }

    }





}

导入UIKit
导入FirebaseAuth
类LoginVC:UIViewController、UITextFieldDelegate{
private let companyLogo=UIImageView（图像：UIImage（命名为：“Company Logo White.png”）；
private-let-signinglogo=UIImageView（图像：UIImage（名为：“SignInText.png”）；
私有let emailField:UITextField={
让emailField=UITextField（）
emailField.placeholder=“电子邮件地址”
emailField.layer.borderWidth=1
emailField.autocapitalizationType=.none
emailField.layer.borderColor=UIColor.white.cgColor
emailField.backgroundColor=.white
emailField.leftViewMode=.always
emailField.leftView=UIView（帧：CGRect（x:0，y:0，宽度：5，高度：0））
返回电子邮件字段
}()
私有let密码字段：UITextField={
设passwordField=UITextField（）
passwordField.placeholder=“密码”
passwordField.layer.borderWidth=1
passwordField.isSecureTextEntry=true
passwordField.layer.borderColor=UIColor.white.cgColor
passwordField.backgroundColor=.white
passwordField.leftViewMode=.always
passwordField.leftView=UIView（帧：CGRect（x:0，y:0，宽度：5，高度：0））
返回密码字段
}()
@IBVAR按钮：UIButton！
私人出租标志：UIButton={
let button=UIButton（）
button.backgroundColor=.systemBlue
button.setTitleColor（.white，表示：。正常）
setTitle（“注销”，用于：。正常）
返回按钮
}()
重写func viewDidLoad（）{
super.viewDidLoad（）
emailField.delegate=self
passwordField.delegate=self
NotificationCenter.default.addObserver（self，选择器：
#选择器（keyboardWillChange），名称：UIResponder.keyboardWillShowNotification，对象：nil）
NotificationCenter.default.addObserver（self，选择器：
#选择器（keyboardWillChange），名称：UIResponder.keyboardWillHideNotification，对象：nil）
NotificationCenter.default.addObserver（self，选择器：
#选择器（keyboardWillChange），名称：UIResponder.keyboardWillChangeFrameNotification，对象：nil）
view.addSubview（companyLogo）
view.addSubview（signInLogo）
view.addSubview（emailField）
view.addSubview（密码字段）
view.addSubview（按钮）
addTarget（self，action:#选择器（didTapButton），用于：.touchupinder）
如果FirebaseAuth.Auth.Auth（）.currentUser！=nil{
companyLogo.ishiden=true
SIGNNLOGO.isHidden=真
emailField.ishiden=true
passwordField.ishiden=true
button.ishiden=true
视图.添加子视图（SignBurtton）
signexputton.frame=CGRect（x:20，y:150，宽度：view.frame.size.width-40，高度：52）
signexputton.addTarget（self，action:#选择器（logoutttapped），用于：。touchUpInside）
}
}
@objc专用函数logOutTapped（）{
做{
请尝试FirebaseAuth.Auth.Auth（）.signOut（）
companyLogo.ishiden=false
signinglogo.ishiden=false
emailField.ishiden=false
passwordField.ishiden=false
button.ishiden=false
SignExputton.removeFromSuperview（）的
}
抓住{
打印（“发生错误”）
}
}
重写func viewdilayoutsubviews（）{
super.viewDidLayoutSubviews（）
companyLogo.frame=CGRect（x:0，
y:125，
宽度：179，
身高：141）
companyLogo.center.x=self.view.center.x//表示水平
//myButton.center.y=self.view.center.y//表示垂直
signInLogo.frame=CGRect（x:0，
y:companyLogo.frame.origin.y+signInLogo.frame.size.height+150，
宽度：110，
身高：36）
signinglogo.center.x=self.view.center.x
emailField.frame=CGRect（x:20，
y:signInLogo.frame.origin.y+signInLogo.frame.size.height+50，
宽度：view.frame.size.width-40，
身高：50）
emailField.AddLayerReffects（拐角半径：5）
passwordField.frame=CGRect（x:20，
y:emailField.frame.origin.y+emailField.frame.size.height+10，
宽度：view.frame.size.width-40，
身高：50）
passwordField.AddLayerFects（拐角半径：5）
button.frame=CGRect（x:20，
y:passwordField.frame.origin.y+passwordField.frame.size.height+30，
宽度：view.frame.size.width-40，
身高:52)
按钮。添加图层效果（拐角半径：4）
}
覆盖函数视图显示（u动画：Bool）{
super.viewdide显示（动画）
如果FirebaseAuth.Auth.Auth（）.currentUser==nil{
//emailField.becomeFirstResponder（）
}
}
@iAction func didTapButton（\发送方：任何）{
打印（“点击继续按钮”）
guard let email=emailField.text，！email.isEmpty，
让password=passwordField.text，！password.isEmpty else{
打印（“缺少字段数据”）