Perform a segue programmatically

Question

Hi I'm trying to perform a segue programmatically without the Storyboard. Currently I have this as my code:

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "popOutNoteExpanded" {
        let vc = segue.destination as! ExpandedCellViewController
        let cell = sender as! AnnotatedPhotoCell
        sourceCell = cell
        vc.picture = cell.imageView.image
        print("button pressed")
    }
}

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    performSegue(withIdentifier: "popOutNoteExpanded", sender: indexPath)
}

When I click on the collection view cell it's saying that:

has no segue with identifier 'popOutNoteExpanded'.

Not sure how to perform my custom animated transition.

You may find your solution [here](http://stackoverflow.com/a/39905378/3687801) — nayem, May 05 '17 at 06:05

Quang Nguyen · Answer 1 · 2017-05-05T07:34:43.927

To trigger a segue programmatically, you have to follow steps:
1. Set it up in Storyboard by dragging your desired segue between two view controllers and set its identifier (for example, in your case is "popOutNoteExpanded") in Attributes Inspector section.
2. Call it programmatically

performSegue(withIdentifier: "popOutNoteExpanded", sender: cell)

Please check if you set its identifier correctly or not.

Besides, in your above code, you put an incorrect sender. In your prepare() method, you use the sender as a UITableViewCell, but you call performSegue() with sender as a IndexPath.
You need a cell by calling:

let cell = tableView.cellForRow(at: indexPath)

And then you can perform a segue:

performSegue(withIdentifier: "popOutNoteExpanded", sender: cell)

No it really shouldn't the question is about performing segue WITHOUT a storyboard — dagi12, Dec 02 '18 at 13:05

score 30 · Accepted Answer · answered May 05 '17 at 07:02

30

Segues are components of storyboard. If you don't have a storyboard, you can't perform segues. But you can use present view controller like this:

let vc = ViewController() //your view controller
self.present(vc, animated: true, completion: nil)

answered May 05 '17 at 07:02

kkakkurt

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Thanks for this. I need to confirm that I can't use a segue identifier without storyboard. I know how to present view. Just need to fiddle with my code a bit. – ajayb May 05 '17 at 14:30

score 3 · Answer 3 · answered Apr 09 '18 at 08:33

Additional to the correct answer, please be aware that if you are in a navigation stack (say, you are in a Settings page and want to segue to an MyAccountVC) you should use:

let vc = MyAccountVC()
self.navigationController?.pushViewController(vc, animated: true)

If the navigated VC appears with a transparent background during the transition, just set the backgoundColor of it to .white.

score 1 · Answer 4 · answered Apr 15 '20 at 20:08

1

In my case I was presenting a TableViewController, without a segue defined, and found it was necessary to instantiate from the storyboard otherwise tableViewCells couldn't be dequeued in cellForRowAt.

let vc = (storyboard.instantiateViewController(withIdentifier: "YourTableViewController") as? YourTableViewController)!
self.navigationController!.pushViewController( vc, animated: true)

answered Apr 15 '20 at 20:08

eklektek

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It would be useful/interesting to understand what warranted this down vote? – eklektek Jul 30 '20 at 14:38
programmitically to me means no storyboard use. so the views are created, and iboutlets are all in the code. how do I add segue to controller without storyboard – CDM social medias in bio Jun 05 '22 at 16:02

Perform a segue programmatically

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