ios - UIScrollView 中缩放图像数组

Question

如何缩放图像数组？现在我可以将图像缩放为 .gif

我的代码:

class ScrollImageViewController: UIViewController, UIScrollViewDelegate {

    @IBOutlet weak var scrollImage: UIScrollView!

    private var imageView: UIImageView!

    var imagesArray = [String]()

    override func viewDidLoad() {
        super.viewDidLoad()

        self.scrollImage.minimumZoomScale = 1.0
        self.scrollImage.maximumZoomScale = 5.0

        for i in 0..<imagesArray.count {

            imageView = UIImageView()
            imageView.sd_setImage(with: URL(string: imagesArray[i]))
            imageView.contentMode = .scaleAspectFit
            let xPosition = self.view.frame.width * CGFloat(i)
            imageView.frame = CGRect(x: xPosition, y: 0, width: self.scrollImage.frame.width, height: self.scrollImage.frame.height)

            scrollImage.contentSize.width = scrollImage.frame.width * CGFloat(i + 1)
            scrollImage.addSubview(imageView)
        }
    }

    func viewForZooming(in scrollView: UIScrollView) -> UIView? {
        return imageView
    }
}

我尝试了 raywenderlich 的类(class)，但他们没有帮助我:(

我想要获得像 AirBnB 或示例这样的结果:

滚动一次并放大、缩小，滚动两次 - 放大、缩小等

Answer 1

您可以检查下面的框架

https://github.com/zvonicek/ImageSlideshow

它有一个 FullScreenSlideshowViewController 类，可用于您的目的，也可以自定义。