Question

我正在尝试在用户输入的密码与输入的密码确认不匹配时显示警报。但是，当它们不匹配时，依旧会发生。谢谢

@IBAction func signUpAction(_ sender: Any) {
    if password.text != passwordConfirm.text {
        let alertController = UIAlertController(title: "Password Incorrect", message: "Please re-type password", preferredStyle: .alert)
        let defaultAction = UIAlertAction(title: "OK", style: .cancel, handler: nil)

        alertController.addAction(defaultAction)
        self.present(alertController, animated: true, completion: nil)
    }
    else{
        Auth.auth().createUser(withEmail: email.text!, password: password.text!){ (user, error) in
            if error == nil {
                self.performSegue(withIdentifier: "signupToHome", sender: self)
            }
            else{
                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)
            }
        }
    }

Answer 1

您似乎将segue钩到了按钮上，将其删除并使其成为vc本身的源代码（将其从IB中vc的黄色圆形图标顶部拖出），因为将segue附加到按钮上可以执行任何操作动作的内部逻辑

为什么if语句失败后，警报不会显示为？

1 个答案: