CODEWITHSUNDEEP
iosswift
Hayden Bowden
Hayden Bowden

Reputation: 11

Variables not sharing between view controllers

In my first view controller I have a function that is caller by the press of a button. 

    func BuyButton(sender:UIButton) {
    print("clicked cell is at row \(sender.tag)")
    let indexPath = NSIndexPath(row: sender.tag, section: 0)
    let currentCell = tableView.cellForRow(at: indexPath as IndexPath) as! CustomCell
    let Storyboard = UIStoryboard(name: "Main", bundle: nil)
    let PaymentController = Storyboard.instantiateViewController(withIdentifier: "PaymentViewController") as! PaymentViewController
    print(currentCell.Test.text!) //prints fine here
    PaymentController.RecordTitle = currentCell.Test.text!
    performSegue(withIdentifier: "Buy", sender: self)
}

In my payment view controller I define the variable as 

    var RecordTitle = String()

In my view did load of my Payment View Controller I try to print the RecordTitle and nothing prints

    print(RecordTitle)//Nothing prints in payment view controller

What am I doing wrong? I have tried multiple methods and none seem to work.

Upvotes: 1

Views: 55

Answers (2)

Nikita Ermolenko
Nikita Ermolenko

Reputation: 2259

You need to override prepare(segue, sender) method and in that method get needed view controller and set title

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "Buy" {
        let vc = segue.destination as! PaymentViewController
        vc.RecordTitle = sender as? String
    }
}

Also don't forget to call performSegue with that title

performSegue(withIdentifier: "Buy", sender: currentCell.Test.text!)

Upvotes: 1

Hamish
Hamish

Reputation: 1745

You can change viewController by 2 method: 1: instantiateViewController 2: performSegue but you are combining them if you want to use first method just do like this:

func BuyButton(sender:UIButton) {
    print("clicked cell is at row \(sender.tag)")
    let indexPath = NSIndexPath(row: sender.tag, section: 0)
    let currentCell = tableView.cellForRow(at: indexPath as IndexPath) as! CustomCell
    let Storyboard = UIStoryboard(name: "Main", bundle: nil)
    let PaymentController = Storyboard.instantiateViewController(withIdentifier: "PaymentViewController") as! PaymentViewController
    print(currentCell.Test.text!) //prints fine here
    PaymentController.RecordTitle = currentCell.Test.text!
    self.presentViewController(PaymentController, animated: false, completion: nil)
}

if you are interested in second method, there is a good example in this link: http://www.codingexplorer.com/segue-swift-view-controllers/

Upvotes: 2

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