UICollectionView Cell Scroll to centre

Question

I am using UICollectionView in my UIViewController.

My collectionview properties are set as below.

Answer 1

I have found a lot of information and solutions.

now, I use this.

on UICollectionViewFlowLayout override:

override public func targetContentOffset(forProposedContentOffset proposedContentOffset: CGPoint, withScrollingVelocity velocity: CGPoint) -> CGPoint {

    if display != .inline {
        return super.targetContentOffset(forProposedContentOffset: proposedContentOffset, withScrollingVelocity: velocity)
    }

    guard let collectionView = collectionView else {
        return super.targetContentOffset(forProposedContentOffset: proposedContentOffset, withScrollingVelocity: velocity)
    }

    let willtoNextX: CGFloat

    if proposedContentOffset.x <= 0 || collectionView.contentOffset == proposedContentOffset {
        willtoNextX = proposedContentOffset.x
    } else {

        let width = collectionView.bounds.size.width
        willtoNextX = collectionView.contentOffset.x + (velocity.x > 0 ?  width : -width)
    }

    let targetRect = CGRect(x: willtoNextX, y: 0, width: collectionView.bounds.size.width, height: collectionView.bounds.size.height)

    var offsetAdjustCoefficient = CGFloat.greatestFiniteMagnitude

    let horizontalOffset = proposedContentOffset.x + collectionView.contentInset.left

    let layoutAttributesArray = super.layoutAttributesForElements(in: targetRect)

    layoutAttributesArray?.forEach({ (layoutAttributes) in
        let itemOffset = layoutAttributes.frame.origin.x
        if fabsf(Float(itemOffset - horizontalOffset)) < fabsf(Float(offsetAdjustCoefficient)) {
            offsetAdjustCoefficient = itemOffset - horizontalOffset
        }
    })

    return CGPoint(x: proposedContentOffset.x + offsetAdjustCoefficient, y: proposedContentOffset.y)
}

and on UICollectionViewController:

collectionView.decelerationRate = .fast
collectionView.isPagingEnabled = false
collectionView.contentInset = UIEdgeInsets.init(top: 0, left: 16, bottom: 0, right: 16)

now, cell is in center!!

preview