Use this inside a UICollectionView Controller?

[famictech2000]

Having a tough time trying to get the transition to work correctly when its in a UICollectionViewController .

I am calling the following perform segue within the collectionview "didSelectItemAt" method

 self.performSegue(withIdentifier: "SqrDetails", sender: self)

Just not able to to get the circle transformation to grow from the cell selected from the collection view!?

Hey! I'll take a look at this later today.

[famictech2000]

Also your calculation

    let centerX = UIScreen.main.bounds.width * 0.5
    let centerY = UIScreen.main.bounds.height * 0.5
    let centerOfScreen = CGPoint(x: centerX, y: centerY)

This doesn't take in account the navigation bar correct?

Hey @famictech2000 ! Sorry for the late reply. I think I might have a solution for you. The following worked for me, and I was able to start the transition from the tapped cell.

        // In viewDidLoad
        let tap = UITapGestureRecognizer(target: self, action: #selector(handleTap))
        self.collectionView?.addGestureRecognizer(tap)

    @objc func handleTap(recognizer: UITapGestureRecognizer) {
        
        if let cv = recognizer.view as? UICollectionView {
            
            let tapLocation = recognizer.location(in: cv)
            
            // To get a reference to the tapped cell, you can do this
            //let indexPath = cv.indexPathForItem(at: tapLocation)
            //let cell = cv.cellForItem(at: indexPath)
            
            self.performSegue(withIdentifier: "Segue", sender: tapLocation)
        }
    }

Note, I don't implement didSelectItem here at all, since it won't get called due to the gesture recognizer. That's why I also handle the cell inside the handleTap method.

Regarding your question about the navigation bar. Yeah, I think you are right. If you have a navigation bar in your project, you might need to offset the y-position with the height of it.