Firebase 身份验证出现多个错误（Swift 3）

Question

由于某种原因，我的这个功能不起作用。

@IBAction func signIn(_ sender: Any) {

    if emailTextField.text !="" && passwordTextField.text !="" {

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

        if error != nil {

        } else {
            print("Sucessfully logged in");
        }

    }

    performSegue(withIdentifier: CONTACTS_SEGUE, sender: nil);
}

这些是我得到的错误： http://prntscr.com/f2iuye

Answer 1

使用这个，完成处理程序的语法错误

FIRAuth.auth()?.signIn(withEmail: self.emailTextField.text!, password: self.passwordTextField.text!) { (user, error) in
    if error == nil {
        print("Sucessfully logged in")
    }
}