display a ContextMenu when a user long-presses on a CollectionView cell

collectionview-contextmenu-long-press.swift

func collectionView(_ collectionView: UICollectionView, contextMenuConfigurationForItemAt indexPath: IndexPath, point: CGPoint) -> UIContextMenuConfiguration? {
        
        let configuration = UIContextMenuConfiguration(identifier: nil, previewProvider: nil){ action in
            let viewMenu = UIAction(title: "View", image: UIImage(systemName: "eye.fill"), identifier: UIAction.Identifier(rawValue: "view")) {_ in
                print("button clicked..")
            }
            let rotate = UIAction(title: "Rotate", image: UIImage(systemName: "arrow.counterclockwise"), identifier: nil, state: .on, handler: {action in
                print("rotate clicked.")
            })
            let delete = UIAction(title: "Delete", image: UIImage(systemName: "trash.fill"), identifier: nil, discoverabilityTitle: nil, attributes: .destructive, state: .on, handler: {action in
                
                print("delete clicked.")
            })
            let editMenu = UIMenu(title: "Edit...", children: [rotate, delete])
            
            
            return UIMenu(title: "Options", image: nil, identifier: nil, children: [viewMenu, editMenu])
        }
        
        return configuration
}