ios - 调用中参数 'sender' 缺少参数

Question

我总是收到此错误，而且我不知道还要输入什么。

你们知道这是怎么回事吗？

@IBAction func loginAction(sender: AnyObject)
{
    let email = self.emailTextField.text
    let password = self.passwordTextField.text

    if email != "" && password != ""
    {
        FIREBASE_REF.authUser(email, password: password, withCompletionBlock: { (error, authData) -> Void in

            if error == nil
            {
                NSUserDefaults.standardUserDefaults().setValue(authData.uid, forKey: "uid")

                print("Logged in")
                self.logoutButton.hidden = false
                self.performSegueWithIdentifier(String, sender: AnyObject?)
                self.presentViewController(HomeViewController, animated: true, completion: nil)
            }
            else
            {
              print(error)
            }


        })
    }
    else
    {
        let alert = UIAlertController(title: "Error", message: "Enter Email and Password", preferredStyle: .Alert)

        let action = UIAlertAction(title: "OK", style: .Default, handler: nil)

        alert.addAction(action)

        self.presentViewController(alert, animated: true, completion: nil)
    }
}

@IBAction func logoutAction(sender: AnyObject)
{
    CURRENT_USER?.unauth()

    NSUserDefaults.standardUserDefaults().setValue(nil, forKey: "uid")
    self.logoutButton.hidden = true
} 
}

错误出现在行

self.presentViewVontroller(HomeViewController...

我已经在 Storyboard中创建了一个 Segue。

Answer 1

如果您已经创建了 Segue。首先选择segue并设置Segue的标识符。

然后像这样执行segue

self.performSegueWithIdentifier(标识符，发件人:nil)

这一行不用写

self.presentViewController(HomeViewController，动画:true，完成:nil)