How to pass data from view controller to a navigation controller and then to another view controller?

Question

I have data from a view controller I want to pass another view controller, but I have it set to present modally, so I have a navigation controller between them. How do I pass data from the first view controller through the navigation controller to the second view controller?

I have this code in the first view controller:

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "presentPopup"
    {
        let destViewController = segue.destination as! NavigationViewController
        destViewController.myData2 = myData
    }
    // Get the new view controller using segue.destinationViewController.
    // Pass the selected object to the new view controller.
}

Then this code in the navigation controller:

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    let destViewController = segue.destination as! SecondViewController
    destViewController.myData3 = myData2
}

But it doesn't work.

Possible duplicate of [Swift pass data through navigation controller](http://stackoverflow.com/questions/25369412/swift-pass-data-through-navigation-controller) — Bista, Apr 07 '17 at 04:38
check the link https://code.tutsplus.com/tutorials/ios-sdk-passing-data-between-controllers-in-swift--cms-27151 — Nandkishor mewara, Apr 07 '17 at 04:39

Sour LeangChhean · Accepted Answer · 2017-04-07T04:36:56.887

5

You can use this in First ViewController:

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "presentPopup"
    {
        let destViewController = segue.destination as! NavigationViewController
        let secondViewcontroller = destViewController.viewcontrollers.first as! SecondViewcontroller
        secondViewcontroller.myData2 = myData
    }
    // Get the new view controller using segue.destinationViewController.
    // Pass the selected object to the new view controller.
}

edited Apr 07 '17 at 04:36

answered Apr 07 '17 at 03:56

Sour LeangChhean

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It says value of NavigationViewController has no member 'first' – Ethan Zhao Apr 07 '17 at 04:31
1

oh sorry forgot viewcontrollers. Please my code again. i just updated. – Sour LeangChhean Apr 07 '17 at 04:37

score 0 · Answer 2 · edited Apr 12 '17 at 05:48

0

If you have 2 viewControllers, firstViewController and secondViewController in storyBoard, you make segue between them.

In firstViewController:

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "presentPopup" {
        let destViewController = segue.destination as! secondViewController
        destViewController.myData2 = myData
    }     
}

In secondViewController declare:

var myData2: [same type with myData]? // now you can use myData2

After perfomeSegue(), the myData2 will have value.

edited Apr 12 '17 at 05:48

Bista

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answered Apr 07 '17 at 03:59

Ronald Vo

64
3

1

I tried this, and it didn't work, since the segue is connected to the navigation view controller between the two view controllers. – Ethan Zhao Apr 07 '17 at 04:32

How to pass data from view controller to a navigation controller and then to another view controller?

2 Answers2