viewController.swift

func setupImages(_ images: [UIImage]){

    for i in 0..<images.count {

        let imageView = UIImageView()
        imageView.image = images[i]
        let xPosition = UIScreen.main.bounds.width * CGFloat(i)
        imageView.frame = CGRect(x: xPosition, y: 0, width: scrollView.frame.width, height: scrollView.frame.height)
        imageView.contentMode = .scaleAspectFit

        scrollView.contentSize.width = scrollView.frame.width * CGFloat(i + 1)
        scrollView.addSubview(imageView)
        scrollView.delegate = self


    }

}