Ios 集合视图和具有多个单元的扩散截面

我正在尝试使用UICollectionViewLayout和UICollectionViewDiffableDataSource创建自定义布局。 我想要一个有单元格的区域，两个单元格需要同时水平滚动。 但现在我只能看到上面的单元格，见下图

以下是我迄今为止所尝试的：

创建布局

配置数据源

func configureDataSource（）{
//数据源
dataSource=UICollectionViewDiffableDataSource（collectionView:collectionView）{
（collectionView，indexPath，item）->UICollectionViewCell？在
guard let section=section（rawValue:indexPath.section）else{fatalError（“未知节”）}
开关段{
案例.图片：
return collectionView.dequeueConfiguredReusableCell（使用：self.configuredGridCell（），for:indepath，item:item）
案例信息：
return collectionView.dequeueConfiguredReusableCell（使用：self.configuredListCell（），for:indepath，item:item）
}
}
}

applyInitialSnapshots

func applyInitialSnapshots（）{

//为我们的部分设置顺序
设sections=Section.allCases
var snapshot=NSDiffableDataSourceSnapshot（）
快照.附加节（节）
dataSource.apply（快照、动画差异：false）
//最近（正交滚动条）
var imageSnapshot=nsDiffableDataSourcesectSnapshot

func createLayout() -> UICollectionViewLayout {
    
    let sectionProvider = { (sectionIndex: Int, layoutEnvironment: NSCollectionLayoutEnvironment) -> NSCollectionLayoutSection? in
        
        guard let sectionKind = Section(rawValue: sectionIndex) else { return nil }
        let section: NSCollectionLayoutSection
        
        // orthogonal scrolling section of images
        if sectionKind == .image {
            let itemSize = NSCollectionLayoutSize(widthDimension: .absolute(self.view.frame.width), heightDimension: .fractionalHeight(0.5))
            let item = NSCollectionLayoutItem(layoutSize: itemSize)
            item.contentInsets = NSDirectionalEdgeInsets(top: 0, leading: 0, bottom: 0, trailing: 0)
                            
            let groupSize = NSCollectionLayoutSize(widthDimension: .absolute(self.view.frame.width), heightDimension: .absolute(self.view.frame.height))
            
            let group = NSCollectionLayoutGroup.horizontal(layoutSize: groupSize, subitems: [item])
            
            section = NSCollectionLayoutSection(group: group)
            section.orthogonalScrollingBehavior = .paging
            section.contentInsets = NSDirectionalEdgeInsets(top: 0, leading: 0, bottom: 10, trailing: 0)
            // info
        } else if sectionKind == .info {
            section = NSCollectionLayoutSection.list(using: .init(appearance: .sidebar), layoutEnvironment: layoutEnvironment)
            section.contentInsets = NSDirectionalEdgeInsets(top: 0, leading: 0, bottom: 0, trailing: 0)
        } else {
            fatalError("Unknown section!")
        }
        
        return section
    }
    return  UICollectionViewCompositionalLayout(sectionProvider: sectionProvider)
}

func configureDataSource() {
    // data source
    
    dataSource = UICollectionViewDiffableDataSource<Section, Art>(collectionView: collectionView) {
        (collectionView, indexPath, item) -> UICollectionViewCell? in
        guard let section = Section(rawValue: indexPath.section) else { fatalError("Unknown section") }
        switch section {
        case .image:
            return collectionView.dequeueConfiguredReusableCell(using: self.configuredGridCell(), for: indexPath, item: item)
        case .info:
            return collectionView.dequeueConfiguredReusableCell(using: self.configuredListCell(), for: indexPath, item: item)
        }
    }
}

    // set the order for our sections
    
    let sections = Section.allCases
    var snapshot = NSDiffableDataSourceSnapshot<Section, Art>()
    snapshot.appendSections(sections)
    dataSource.apply(snapshot, animatingDifferences: false)
    
    // recents (orthogonal scroller)
    
    var imageSnapshot = NSDiffableDataSourceSectionSnapshot<Art>()
    imageSnapshot.append(self.arts)
    
    dataSource.apply(imageSnapshot, to: .image, animatingDifferences: false)

    var allSnapshot = NSDiffableDataSourceSectionSnapshot<Art>()
    allSnapshot.append(self.arts)
    dataSource.apply(allSnapshot, to: .info, animatingDifferences: false)
}