UICollectionViewCompositionalLayout - center items in sections or groups

问题

I set up a collection view and its layout with the new compositional stuff and it has been pretty cool, it seems to be very expandable but I can't find a way to make items centered in the collection, which is IMO a basic feature that one would imagine being supported..

What I have is:

Accomplished with this code:

UICollectionViewCompositionalLayout { section, env in
    let tagDefaultSize = CGSize(width: 100, height: 40)
    
    let item = NSCollectionLayoutItem(
        layoutSize: NSCollectionLayoutSize(widthDimension: .estimated(tagDefaultSize.width), heightDimension: .absolute(tagDefaultSize.height))
    )
    
    item.edgeSpacing = NSCollectionLayoutEdgeSpacing(
        leading: .fixed(0),
        top: .fixed(0),
        trailing: .fixed(8),
        bottom: .fixed(0)
    )
    
    let group = NSCollectionLayoutGroup.horizontal(
        layoutSize: NSCollectionLayoutSize(widthDimension: .fractionalWidth(1.0), heightDimension: .absolute(tagDefaultSize.height)),
        subitems: [item]
    )
    
    group.edgeSpacing = NSCollectionLayoutEdgeSpacing(
        leading: .flexible(8),
        top: .fixed(0),
        trailing: .fixed(8),
        bottom: .fixed(8)
    )
    
    let section = NSCollectionLayoutSection(group: group)
    
    section.contentInsets = NSDirectionalEdgeInsets(
        top: 30,
        leading: 20,
        bottom: 40,
        trailing: 20
    )
    
    return section
}

But what I need is this:

Has anyone had any luck with this? Thanks

来源：https://stackoverflow.com/questions/64965485/uicollectionviewcompositionallayout-center-items-in-sections-or-groups

标签

ios

swift

uicollectionview

uikit

uicollectionviewcompositionallayout