I'm using UICollectionViewFlowLayout to override the targetContentOffset and its work class HomeCVColumnFlowLayout: UICollectionViewFlowLayout {     var cellsPerRow: Int     let type : String?     override var itemSize: CGSize {         get {             guard let collectionView = collectionView else { return super.itemSize }             let marginsAndInsets = sectionInset.left + sectionInset.right + minimumInteritemSpacing * CGFloat(cellsPerRow - 1)             let itemWidth = ((collectionView.bounds.size.width - marginsAndInsets) / CGFloat(cellsPerRow)).rounded(.down)             let itemHeight = collectionView.bounds.size.height - sectionInset.top - sectionInset.bottom             return CGSize(width: itemWidth, height: itemHeight)         }         set {             super.itemSize = newValue         }     }     init(cellsPerRow: Int, minimumInteritemSpacing: CGFloat = 0, minimumLineSpacing: CGFloat = 0, sectionInset: UIEdgeInsets = .zero, type: String = "") {         self.cellsPerRow = cellsPerRow         self.type = type         super.init()         self.scrollDirection = UICollectionView.ScrollDirection.horizontal         self.minimumInteritemSpacing = minimumInteritemSpacing         self.minimumLineSpacing = minimumLineSpacing         self.sectionInset = sectionInset     }     required init?(coder aDecoder: NSCoder) {         fatalError("init(coder:) has not been implemented")     }     override func invalidationContext(forBoundsChange newBounds: CGRect) -> UICollectionViewLayoutInvalidationContext {         let context = super.invalidationContext(forBoundsChange: newBounds) as! UICollectionViewFlowLayoutInvalidationContext         context.invalidateFlowLayoutDelegateMetrics = newBounds != collectionView?.bounds         return context     }     override func targetContentOffset(         forProposedContentOffset proposedContentOffset: CGPoint, withScrollingVelocity velocity: CGPoint) -> CGPoint {         guard let collectionView = collectionView else { return proposedContentOffset }         let pageWidth = itemSize.width + minimumLineSpacing         let currentPage: CGFloat = collectionView.contentOffset.x / pageWidth         let nearestPage: CGFloat = round(currentPage)         let isNearPreviousPage = nearestPage < currentPage         var pageDiff: CGFloat = 0         let velocityThreshold: CGFloat = 0.5         if isNearPreviousPage {           if velocity.x > velocityThreshold {             pageDiff = 1           }         } else {           if velocity.x < -velocityThreshold {             pageDiff = -1           }         }         let x = (nearestPage + pageDiff) * pageWidth         let cappedX = max(0, x)         return CGPoint(x: cappedX, y: proposedContentOffset.y)       } }

Same here from Thailand!