Swift & Navigation : How do I replace a ViewController and also send some parameters?

Question

How do I replace a ViewController and also send some parameters?

With the code below, I can only push another ViewController into my current Navigation Stack. Can we just pop and push another one immediately? Or is there an official to replace for good? Please kindly show me. Thank you.

Perform Segue

performSegue(withIdentifier: "ToNewViewController", sender: self)

Prepare Segue

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        let destinationVC = segue.destination as! NewViewController
        destinationVC.params = params
    }

Shehata Gamal · Accepted Answer · 2021-10-20T08:37:30.147

2

If you have a navigation controller as your app window root , then you can manage all viewControllers

var vcs = self.navigationController!.viewControllers // get all vcs
vcs = vcs.dropLast() // remove last vc
let vc = // create new VC
vcs.append(vc) // append it

Then alter that array and set it back like this

self.navigationController!.setViewControllers(vcs,animated:true)

OR

You can get the top presented vc with this , then add a method to that vc to do the data replacement and refresh of your UI

edited Oct 20 '21 at 08:37

answered Oct 20 '21 at 08:25

Shehata Gamal

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Then I can just use `Prepare Segue` to pass the `parameters`? Could you me a full code? – Punreach Rany Oct 20 '21 at 08:28
1

Above 2 ways is when you need to do the altering so it has no segue just a management of the presented vcs either pop/push or get the top and alter it , don't confuse this with showing the vc – Shehata Gamal Oct 20 '21 at 08:30
I'm new to iOS dev. Could you give me the full code? – Punreach Rany Oct 20 '21 at 08:31
@PunreachRany you may accept answer if helped – Shehata Gamal Oct 20 '21 at 13:50
it looks like I have replaced the screen. But the storyboard UI associated with the ViewController didn't show up. In other words, it showed a black screen – Punreach Rany Oct 21 '21 at 07:38

Swift & Navigation : How do I replace a ViewController and also send some parameters?

1 Answers1