How to set Struct Variable data from one view controller And Getting same value from Another view controller

Question

Im new in swift. I have create a struct class with one variable. Im trying to set value of that struct variable from my first view controller which is working perfectly but when im trying to get that same value from second view controller its give me nil value.

below is my some codding

//Struct class

import Foundation
import UIKit

struct CompanyData {
    var companyName : String?


    mutating func setData(name : String)
    {
        companyName = name
    }

}

// FIRST VIEW CONTROLLER

import UIKit

class SelfCompanyNameView: UIViewController {

@IBOutlet weak var companyNameTxt: TextfieldDesign!
var company = CompanyData()
var comName = ""

override func viewDidLoad() {
    super.viewDidLoad()

}


@IBAction func compnyBtnPress(_ sender: Any)
{
    if companyNameTxt.text?.count == 0
    {
        Alert.showAlert(on: self, with: "Required", message: "Please enter your company name")
    }
    else
    {
        comName = companyNameTxt.text!
        company.setData(name: comName)
        print("\(comName)===\(company.companyName!)")


        let vc = storyboard?.instantiateViewController(withIdentifier: "SelfAddressView")  as! SelfAddressView
        navigationController?.pushViewController(vc, animated: true)
    }
   }
 }

//SECOND VIEW CONTROLLER

import UIKit

class SelfAddressView: UIViewController {

var company = CompanyData()
override func viewDidLoad() {
    super.viewDidLoad()

    print(company.companyName)
 }
}

Ashish · Accepted Answer · 2019-09-27 07:29:36Z

1

You need to pass your model to secondView Controller like following code

// FIRST VIEW CONTROLLER

let vc = storyboard?.instantiateViewController(withIdentifier: "SelfAddressView")  as! SelfAddressView
vc.company = company
navigationController?.pushViewController(vc, animated: true)

//SECOND VIEW CONTROLLER

import UIKit

class SelfAddressView: UIViewController {

var company: CompanyData!
override func viewDidLoad() {
    super.viewDidLoad()

    print(company.companyName)
 }
}

answered Sep 27, 2019 at 7:29

Ashish

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Comments

Er. Vihar · Accepted Answer · 2019-09-27 07:30:10Z

1

You need to declare a static variable as a shared instance of your struct. And use that while setting and getting your value. E.G.

struct CompanyData {
    static let shared = CompanyData()
    var companyName : String?

    mutating func setData(name : String)
    {
        companyName = name
    }

}

While setting the value, use as:

company.shared.setData(name: comName)

And while getting the value, use as:

print(company.shared.companyName)

answered Sep 27, 2019 at 7:30

Er. Vihar

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Comments

Mohammed Zaki · Accepted Answer · 2019-09-27 07:51:55Z

0

I would rather use Protocols and delegators. Here is a great tutorial will help you understand the concept Sean Allen Swift Delegate Protocol Pattern Tutorial - iOS Communication Patterns Part 1

answered Sep 27, 2019 at 7:51

Mohammed Zaki

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