Swift firebase google登录后如何关闭视图

我有swift 4 firebase谷歌登录的代码。问题是在登录后，它只是将我放回到用于登录的视图上。在哪里执行代码以在登录后自动关闭视图？

我假设您的代码如下所示

FIRAuth.auth()?.signIn(withEmail: self.emailTextField.text!, password: self.passwordTextField.text!) { (user, error) in

            if error == nil {

                //Print into the console if successfully logged in
                print("You have successfully logged in")

                //Go to the HomeViewController if the login is sucessful
                let vc = self.storyboard?.instantiateViewController(withIdentifier: "Home")
                self.present(vc!, animated: true, completion: nil)

                //If you want to go back to the previous view then call
                //For view embedded in navigation controller use,
                self.navigationController?.popViewController(animated: true)

                //For view that was presented use,
                self.dismiss(animated: true, completion: nil)

            } else {

                //Tells the user that there is an error and then gets firebase to tell them the error
                let alertController = UIAlertController(title: "Error", message: error?.localizedDescription, preferredStyle: .alert)

                let defaultAction = UIAlertAction(title: "OK", style: .cancel, handler: nil)
                alertController.addAction(defaultAction)

                self.present(alertController, animated: true, completion: nil)
            }
        }

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如果您可以发布您在何处执行登录的代码，这将更有帮助。请查看以下两个有关提问的指南：和。没有看到您正在做什么，我们只是猜测，因为答案将取决于您的视图是如何创建的。密码？赛格？IB？还有别的吗？