Passing data from one view controller to another

Question

I\'m parsing data with json, and i want to pass model_id to ActiveSubViewController / id_model. What am i doing wrong?

//  ViewController.swift
//
//  Copyright          


        

Answer 1

Do make a separate property var model_id : String = "" in the starting of your class and then use the prepare function outside your LoginBtnTapped function :

Here it is :

      //  ViewController.swift
    //
    //  Copyright © 2017 smokzz. All rights reserved.
    //

    import UIKit
    import SwiftMessages
    import Alamofire



    class ViewController: UIViewController,UIAlertViewDelegate {

        @IBOutlet var myTableView: UIView!
        @IBOutlet weak var EmailField: UITextField!
        @IBOutlet weak var PasswordField: UITextField!

         var model_id : String = ""

        @IBAction func LoginBtnTapped(_ sender: Any) {

            let userEmail = EmailField.text!
            let userPassword = PasswordField.text!



            if((userEmail.isEmpty) || (userPassword.isEmpty)){

    //            createAlert(title: "Oops! ", message: "Email or Password field is empty")

                let view = MessageView.viewFromNib(layout: .CardView)
                view.configureTheme(.error)
                view.configureDropShadow()
                let iconText = ["                                                                    

                                                        
            

Answer 2

Make string variable in your AppDelegate Like

var Model_id = String()

and where you are getting value of username and userid sends its value to AppDelegate. make AppDelgate object like below and same in destinationViewController

let appDelegate = UIApplication.shared.delegate as! AppDelegate

to pass value to app delegate variable

self.appDelegate. Model_id = "your Value"

and get your values wherever you want to fetch like below

let appDelegate = UIApplication.shared.delegate as! AppDelegate
let  string = appDelegate. Model_id as! String

Answer 3

Please Use This Updated Code.

    import UIKit
    import SwiftMessages
    import Alamofire



    class ViewController: UIViewController,UIAlertViewDelegate {

        @IBOutlet var myTableView: UIView!
        @IBOutlet weak var EmailField: UITextField!
        @IBOutlet weak var PasswordField: UITextField!

        var model_id = ""

        @IBAction func LoginBtnTapped(_ sender: Any) {

            let userEmail = EmailField.text!
            let userPassword = PasswordField.text!



            if((userEmail.isEmpty) || (userPassword.isEmpty)){

                //            createAlert(title: "Oops! ", message: "Email or Password field is empty")

                let view = MessageView.viewFromNib(layout: .CardView)
                view.configureTheme(.error)
                view.configureDropShadow()
                let iconText = ["