How to data in segue using Swift

Question

I'd like to pass my array from my first to my second ViewController. In the end of my first VC I tried to pass it like this:

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {

    let secondVC = ViewController2()
    secondVC.passengers2 = passengers
    print(secondVC.passengers2)

    print(passengers)
    }

"passengers" is my first array in "ViewController.swift" and "passengers2" my sewcond array in "ViewController2.swift".

When I go over to my second VC, the console tells me, that "passengers" and "passengers2" have the same value, but as soon as I am in "ViewController2.swift", "passengers2" is emtpy for some reason.

Does anyone know why?

" let secondVC = ViewController2()" That's because you are creating a whole new object and not using the one that is at the end of the segue. let secondVC = segue.destination as ViewController2 instead. — Larme
– Larme, Commented Nov 17, 2017 at 10:24

Damien · Accepted Answer · 2017-11-17 10:25:02Z

3

The problem in your code is that you instantiate a new ViewController2 object, which is never used.

You want to use the destination view controller that is inside your segue object, like that :

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if let destinationVC = segue.destinationViewController as? ViewController2 {
        destinationVC.passengers2 = passengers
    }
}

answered Nov 17, 2017 at 10:25

Damien

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