Perform a segue programmatically

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.

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)

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`.

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)

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)