Ios Swift3：类型为'的值；（任何）——>；（）'；没有成员'；setTitle'；

我正在尝试登录，我正在进行测试，当日志正确时我正在尝试更改按钮的标题，但我收到了此错误：类型为“（Any）->（）”的值没有成员“SetTitle”。然后我给你留下代码和截图

我需要帮助，因为我被阻止了，无法继续。一切帮助都将不胜感激。多谢各位

这是我的密码

import UIKit

class LogViewController: UIViewController {

    @IBOutlet weak var _username: UITextField!
    @IBOutlet weak var _password: UITextField!

    @IBAction func _login_button(_ sender: Any) {
        let username = _username.text
        let password = _password.text

        if(username == "" || password == "")
        {
            return
        }

        DoLogin(username!, password!)
    }



    func DoLogin(_ user:String, _ psw:String)
    {

        let url = URL(string: "http://localhost/bill/userLogin.php")
        let session = URLSession.shared

        let request = NSMutableURLRequest(url: url!)
        request.httpMethod = "POST"

        let paramToSend = "username=" + user + "&password=" + psw
        request.httpBody = paramToSend.data(using: String.Encoding.utf8)

        let task = session.dataTask(with: request as URLRequest, completionHandler: {
                (data, response, error) in
            guard let _:Data = data else
            {
                return
            }

            let json:Any?
            do
            {
                json = try JSONSerialization.jsonObject(with: data!, options: [])
            }
            catch
            {
                return
            }

            guard let server_response = json as? NSDictionary else
            {
            return
            }

            if let data_block = server_response["data"] as? NSDictionary
            {
                if let session_data = data_block["session"] as? String
                {
                    let preferences = UserDefaults.standard
                    preferences.set(session_data, forKey: "session")

                    DispatchQueue.main.async {
                        execute:self.LoginDone()
                    }
                }
            }
        })
        task.resume()
    }

    func LoginDone()
    {
        _username.isEnabled = false
        _password.isEnabled = false
        _login_button.setTitle("Logout", for: .normal)
    }


    override func viewDidLoad() {
        super.viewDidLoad()


    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


}

---

您的问题与_login_按钮有关，因为它是@IBAction而不是@IBOutlet

要解决此问题，请从情节提要中拖动outlet并将其与适当的文件连接

然后设置按钮的属性

例如

@IBOutlet weak var _login_button_outlet: UIButton!

func LoginDone()
{
    _username.isEnabled = false
    _password.isEnabled = false
    _login_button_outlet.setTitle("Logout", for: .normal)
}

---

您好，您正在尝试将标题设置为_login_按钮，而不是按钮是@iAction方法，因此要设置标题，您必须创建@IBOutlet弱var _login_按钮：UIButton

_login_按钮是iAction而非iButton按钮的出口

_login_按钮的功能不是按钮出口，如果您已声明出口具有相同名称，则更改按钮名称或功能将解决您的错误OK谢谢，我将更改功能，它将正常工作。谢谢guys@amr07接受答案。如果有帮助，请考虑遵守Swift（camelCased）命名约定。这不是javascript或PHP。@amr07您总是很受欢迎