如何以编程方式将 UIPageController 和 UICollectionViewController 添加到 UIViewController

我已经有一个以编程方式制作的 UIViewController，并希望在底部有一个包含 4 个单元格的集合视图，但我希望能够在集合视图的不同页面中滑动以查看不同的单元格.我不确定从哪里开始在集合视图上启用分页以及如何设置单元格，或者创建页面控制器并将集合视图添加到其中?我已经在网上看到了几种方法，但这并不真正符合我的需求.

I already have a UIViewController made programmatically, and would like at the bottom to have a collection view with 4 cells, but I want to be able to swipe through different pages of the collection view to see different cells. I'm not sure where to begin with this wether to enable paging on the collection view and how that would work with setting up the cells, or to create a page controller and adding the collection view to that? There are a couple of ways that I have seen online already, but that don't really fit my needs.

我想要这样的东西:

如果我能为您提供更多信息，请告诉我.我刚刚创建了一个基本的页面控制器，但不确定如何实现我正在寻找的.

Let me know if I can provide you with more information. I just created a basic page controller but am not sure how to achieve what I'm looking for.

我创建了一个集合视图并添加了约束以获得我想要的布局；但是我不确定如何让它像页面一样滑动.

I created a collection view and added the constraints to get the layout I want; however I'm not sure how to make it swipe like a page.

这是集合视图的代码:

let friendsCollectionView: UICollectionView = {
    let layout = UICollectionViewFlowLayout()
    layout.scrollDirection = .horizontal
    let cv = UICollectionView(frame: .zero, collectionViewLayout: layout)
    cv.translatesAutoresizingMaskIntoConstraints = false
    cv.register(FriendsCell.self, forCellWithReuseIdentifier: "cell")
    cv.backgroundColor = UIColor.blue
    cv.layer.cornerRadius = 10
    return cv
}()

view.addSubview(friendsCollectionView)
friendsCollectionView.anchor(top: separatorView.bottomAnchor, left: nil, bottom: nil, right: nil, paddingTop: 50, paddingLeft: 0, paddingBottom: 0, paddingRight: 0, width: 250, height: 250)
 friendsCollectionView.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true

  func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
    return CGSize(width: 75, height: 75)
}

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets {
    if section == 0 {
        return UIEdgeInsets(top: 85, left: 10, bottom: 0, right: 0)
    }
    if section == 1 {
        return UIEdgeInsets(top: 10, left: 0, bottom: 10, right: 0)
    }
    if section == 2 {
        return UIEdgeInsets(top: 85, left: 5, bottom: 0, right: 0)
    }


    return UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
}

func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        if section == 0 { return 1 }
        if section == 1 { return 2 }
        if section == 2 { return 1 }


    return 0
}
func numberOfSections(in collectionView: UICollectionView) -> Int {
    return 3
}