@IBOutlet weak var imageView:UIImageView!

var i=Int()

override func viewDidLoad() {
    super.viewDidLoad()
    Timer.scheduledTimer(timeInterval: 3.0, target: self, selector: #selector(imageChange), userInfo: nil, repeats: true)
    // Do any additional setup after loading the view.
}

@objc func imageChange(){
    self.imageView.image=images[i]
    if i<images.count-1{
        i+=1
    }
    else{
        i=0
    }
}

我曾经尝试过用CollectionView来制作幻灯片，但是效果不太好，我不喜欢它在一行中显示图像的笨拙方式，也不喜欢它不能返回活动图像的事实（这里也有一些变通方法，但它们似乎不可靠）。因此，很自然，我最终为我的目的构建了一个自定义幻灯片旋转木马。我将在这里分享代码，所以希望它能帮助（或至少指导某人）解决类似的问题。
注：我的carousel是全宽的singleImagePerScreen carousel，带有滑动识别器，可滑动图像并委派图像处于活动状态时触发的功能（我使用它来显示活动图像-“1 of 5”）。
测试平台：SWIFT 5、XCode 12.2、iOS 14.2

// ImageCarouselView class

import UIKit

class ImageCarouselView: UIView {
    private let images: [UIImage?]
    private var index = 0
    private let screenWidth = UIScreen.main.bounds.width

    var delegate: ImageCarouselViewDelegate?

    lazy var previousImageView = imageView(image: nil, contentMode: .scaleAspectFit)
    lazy var currentImageView = imageView(image: nil, contentMode: .scaleAspectFit)
    lazy var nextImageView = imageView(image: nil, contentMode: .scaleAspectFit)

    lazy var previousImageLeadingConstraint: NSLayoutConstraint = {
        return previousImageView.leadingAnchor.constraint(equalTo: leadingAnchor, constant: -screenWidth)
    }()

    lazy var currentImageLeadingConstraint: NSLayoutConstraint = {
        return currentImageView.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 0)
    }()

    lazy var nextImageLeadingConstraint: NSLayoutConstraint = {
        return nextImageView.leadingAnchor.constraint(equalTo: leadingAnchor, constant: screenWidth)
    }()

    init(_ images: [UIImage?]) {
        self.images = images

        super.init(frame: .zero)

        self.translatesAutoresizingMaskIntoConstraints = false

        setupLayout()
        setupImages()
        setupSwipeRecognizer()
    }

    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    private func setupLayout() {
        self.subviews.forEach({ $0.removeFromSuperview() })

        addSubview(previousImageView)
        addSubview(currentImageView)
        addSubview(nextImageView)

        previousImageLeadingConstraint = previousImageView.leadingAnchor.constraint(equalTo: leadingAnchor, constant: -screenWidth)
        currentImageLeadingConstraint = currentImageView.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 0)
        nextImageLeadingConstraint = nextImageView.leadingAnchor.constraint(equalTo: leadingAnchor, constant: screenWidth)

        NSLayoutConstraint.activate([
            previousImageLeadingConstraint,
            previousImageView.centerYAnchor.constraint(equalTo: centerYAnchor),
            previousImageView.widthAnchor.constraint(equalToConstant: screenWidth),

            currentImageLeadingConstraint,
            currentImageView.centerYAnchor.constraint(equalTo: centerYAnchor),
            currentImageView.widthAnchor.constraint(equalToConstant: screenWidth),

            nextImageLeadingConstraint,
            nextImageView.centerYAnchor.constraint(equalTo: centerYAnchor),
            nextImageView.widthAnchor.constraint(equalToConstant: screenWidth),
        ])
    }

    private func setupImages() {
        currentImageView.image = images[self.index]

        guard images.count > 1 else { return }

        if (index == 0) {
            previousImageView.image = images[images.count - 1]
            nextImageView.image = images[index + 1]
        }

        if (index == (images.count - 1)) {
            previousImageView.image = images[index - 1]
            nextImageView.image = images[0]
        }
    }

    private func setupSwipeRecognizer() {
        guard images.count > 1 else { return }

        let leftSwipe = UISwipeGestureRecognizer(target: self, action: #selector(handleSwipes))
        let rightSwipe = UISwipeGestureRecognizer(target: self, action: #selector(handleSwipes))

        leftSwipe.direction = .left
        rightSwipe.direction = .right

        self.addGestureRecognizer(leftSwipe)
        self.addGestureRecognizer(rightSwipe)
    }

    @objc private func handleSwipes(_ sender: UISwipeGestureRecognizer) {
        if (sender.direction == .left) {
            showNextImage()
        }

        if (sender.direction == .right) {
            showPreviousImage()
        }
    }

    private func showPreviousImage() {
        previousImageLeadingConstraint.constant = 0
        currentImageLeadingConstraint.constant = screenWidth

        UIView.animate(withDuration: 0.2, delay: 0.0, options: .curveEaseIn, animations: {
            self.layoutIfNeeded()
        }, completion: { _ in
            self.nextImageView = self.currentImageView
            self.currentImageView = self.previousImageView
            self.previousImageView = self.imageView(image: nil, contentMode: .scaleAspectFit)

            self.index = self.index == 0 ? self.images.count - 1 : self.index - 1
            self.delegate?.imageCarouselView(self, didShowImageAt: self.index)
            self.previousImageView.image = self.index == 0 ? self.images[self.images.count - 1] : self.images[self.index - 1]

            self.setupLayout()
        })
    }

    private func showNextImage() {
        nextImageLeadingConstraint.constant = 0
        currentImageLeadingConstraint.constant = -screenWidth

        UIView.animate(withDuration: 0.2, delay: 0.0, options: .curveEaseIn, animations: {
            self.layoutIfNeeded()
        }, completion: { _ in
            self.previousImageView = self.currentImageView
            self.currentImageView = self.nextImageView
            self.nextImageView = self.imageView(image: nil, contentMode: .scaleAspectFit)

            self.index = self.index == (self.images.count - 1) ? 0 : self.index + 1
            self.delegate?.imageCarouselView(self, didShowImageAt: self.index)
            self.nextImageView.image = self.index == (self.images.count - 1) ? self.images[0] : self.images[self.index + 1]

            self.setupLayout()
        })
    }

    func imageView(image: UIImage? = nil, contentMode: UIImageView.ContentMode) -> UIImageView {
        let view = UIImageView()

        view.image = image
        view.contentMode = contentMode
        view.translatesAutoresizingMaskIntoConstraints = false

        return view
    }
}

// ImageCarouselViewDelegate

import UIKit

protocol ImageCarouselViewDelegate: NSObjectProtocol {
    func imageCarouselView(_ imageCarouselView: ImageCarouselView, didShowImageAt index: Int)
}

// Usage

let slideshowView = ImageCarouselView(images) // initialize

self.slideshowView.delegate = self // set delegate in viewDidLoad()

extension YourViewController: ImageCarouselViewDelegate {
    func imageCarouselView(_ imageCarouselView: ImageCarouselView, didShowImageAt index: Int) {
        // do something with index
    }
}

你可以添加收藏视图，在你自定义的收藏视图单元格中添加图片，然后在收藏视图的 prop 面板上做checkedPaging Enabled。