class MyCollectionView: UICollectionView, UIGestureRecognizerDelegate {

    func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
        return true
    }
}

func setupCollection() {
        cellSize = CGSize(width: self.view.frame.width, height: self.view.frame.width)
        collectionView.delegate = self
        collectionView.dataSource = self
        if let layout = collectionView.collectionViewLayout as? UICollectionViewFlowLayout {
            layout.scrollDirection = .horizontal
        }
        //collectionView.isScrollEnabled = false
        collectionView.isPagingEnabled = true
        collectionView.alwaysBounceVertical = false
    }