How to programmatically navigate to ViewController and pass data

Question

I'm trying to pass data to the second view controller without success,
This is my code:

let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: “secondVC")
self.present(vc, animated: true, completion: nil)

//The following solution as I checked in the previous questions doesn't work:

vc.Var1InSecondViewController = self.var1
vc.Var2InSecondViewController = self.var2

It claims that 'vc' which is related to the second view controller has no member of 'Var1InSecondViewController' even though I did created it in the second view controller.

Your help would be appreciated, thank you.

Add code for second view controller, with deceleration of vc.Var1InSecondViewController — Krunal, Oct 04 '17 at 17:51
@Krunal I mention in my question that I already did that: "even though I did created it in the second view controller" — Shlomi, Oct 04 '17 at 17:59
an answer to this question need class name for second view controller and parameters access level for your variables in second view controller. Look at Bharath's answer, It may be correct but View controller class name is missing there only. — Krunal, Oct 04 '17 at 18:01

score 3 · Accepted Answer · edited Oct 04 '17 at 17:53

3

You have to specify the class name of the secondVC as follows in order to access its properties,

Instead of,

let vc = storyboard.instantiateViewController(withIdentifier: “secondVC")

Use

let vc = storyboard.instantiateViewController(withIdentifier: “secondVC") as? YOUR_SECOND_VIEW_CONTROLLER_CLASS_NAME

And do the assignment steps before presenting the view controller as follows,

vc?.Var1InSecondViewController = self.var1
vc?.Var2InSecondViewController = self.var2
self.present(vc!, animated: true, completion: nil)

edited Oct 04 '17 at 17:53

Krunal

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answered Oct 04 '17 at 17:52

Bharath

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It's working ! thank you very much ! – Shlomi Oct 04 '17 at 18:01
@Shlomi: Welcome, Happy to help :-) – Bharath Oct 04 '17 at 18:01

score 0 · Answer 2 · answered Oct 04 '17 at 17:58

You can use this:

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "yourSegue" {
        if let firstViewController = segue.destination as? FirstViewController {
          firstViewController.var1 = var1
        }
    }
}
}

How to programmatically navigate to ViewController and pass data

2 Answers2