Question

按下保存按钮后，我试图进入下一个屏幕，我尝试编写代码执行segue，但出现了很多错误。下面是我的当前代码，我还没有完成保存部分。我想回到那以后。

我是xcode编码的新手，因此任何建议将此代码放在何处都是不错的选择。

import UIKit
import CoreData

class SignupVC: UIViewController {
    @IBOutlet var txtfirstname: UITextField!
    @IBOutlet var txtlastname: UITextField!
    @IBOutlet var txtUsername: UITextField!
    @IBOutlet var txtPassword: UITextField!
    @IBOutlet var txtConfirmpassword: UITextField!
    @IBOutlet var txtEmail: UITextField!

var context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext


    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }

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

    @IBAction func signupTapped(_ sender: Any) {
        _ = txtUsername.text;
        _ = txtPassword.text;
        _ = txtConfirmpassword.text;
        _ = txtEmail.text;


        //check empty fields
        if((txtPassword.text?.isEmpty)! || (txtConfirmpassword.text?.isEmpty)! || (txtEmail.text?.isEmpty)!)
        {

         //Display alert
            displayMyAlertMessage(userMessage: "All fields are required")
            return;
        }
        //check if passwords match
        if (txtPassword.text != txtConfirmpassword.text)

        {
            //Display in alert message
            displayMyAlertMessage(userMessage: "Passwords don't match");
            return;
        }
        //store Data

        // Display alert message with Confirmation
    }
        func displayMyAlertMessage(userMessage:String)
        {
            let myAlert = UIAlertController(title:"Alert", message: userMessage, preferredStyle: UIAlertControllerStyle.alert);

            let okAction = UIAlertAction(title:"ok", style: UIAlertActionStyle.default, handler:nil);

            myAlert.addAction(okAction);

            self.present(myAlert, animated:true, completion:nil);

}
    /*

Answer 1

只需进入情节提要并按住按钮上的控制键，然后将其放到要转到的ViewController上即可。然后选择种类。例如“显示”

然后它应该工作。如果您有任何疑问，请问。

保存数据xcode后转到下一个屏幕？

1 个答案: