How to Load a viewController from a Xib file using segue? Swift 5

I'm trying to go to from one VC (with implemented Xib file inside) to another VC using a segue.

However, I'm getting an error of

Cannot find 'performSegue' in scope

This is the class of my xib file:

class PetNameInfoCollectionViewCell: UICollectionViewCell {
    @IBAction func takeAPhoto(_ sender: UIButton) {
        performSegue(withIdentifier: "UIImagePickerSegue", sender: nil)
    }
}

performSegue is one of UIViewController's methods, so it doesn't work on UICollectionViewCell. Instead, you'll need to call performSegue from the parent view controller that contains the collection view.

You can use delegates or closures for this, but I prefer closures. First, add one inside PetNameInfoCollectionViewCell:

class PetNameInfoCollectionViewCell: UICollectionViewCell {
    var photoTapped: (() -> Void)? /// here!

    @IBAction func takeAPhoto(_ sender: UIButton) {
        photoTapped?() /// call it
    }
}

Then, assign the closure inside the parent view controller's cellForItemAt.

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    if indexPath.item == 0 {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: userNameInfoCollectionViewCellId, for: indexPath) as! userNameInfoCollectionViewCell /// replace with the cell class
        cell.photoTapped = { [weak self] in
            self?.performSegue(withIdentifier: "UIImagePickerSegue", sender: nil)
        }
        return cell
        
    } else {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: PetNameInfoCollectionViewCell, for: indexPath) as! PetNameInfoCollectionViewCell /// replace with the cell class
        cell.photoTapped = { [weak self] in
            self?.performSegue(withIdentifier: "UIImagePickerSegue", sender: nil)
        }
        return cell
    }
}