在另一个ViewController中打开全尺寸图像，可以像Whatsapp一样进行缩放

Question

伙计们！我做一个像信使的应用程序，我可以发送/接收图像。点击图像后，应在另一个控制器（FullScreenImageVC）中打开它。在此控制器中，此图像必须具有实际尺寸，位于中心并且可以收缩以进行缩放。所有这些我以编程方式进行，没有任何库。

这是我的控制器，我从前一个VC接收图像，并在那里执行所有逻辑：

class FullScreenImageVC: UIViewController, UIScrollViewDelegate {

var startingFrame: CGRect?
var blackBackgroundView: UIView?
var startingImageView: UIImageView?
var imageToSave: UIImage?

var zoomingImageView: UIImageView = {
    let image = UIImageView()
    image.translatesAutoresizingMaskIntoConstraints = false
    return image
}()

var scrollView: UIScrollView = {
    let scroll = UIScrollView()
    scroll.minimumZoomScale = 1
    scroll.maximumZoomScale = 7
    scroll.translatesAutoresizingMaskIntoConstraints = false
    return scroll
}()

override func viewDidLoad() {
    super.viewDidLoad()
    scrollView.delegate = self

    let imageView = UIImageView()
    imageView.image = zoomingImageView.image
    imageView.contentMode = .scaleAspectFit
    imageView.isUserInteractionEnabled = true

    view.addSubview(scrollView)
    scrollView.addSubview(imageView)
    scrollView.fillSuperView()
    imageView.fillSuperView()

}

static func navigate(_ context: UIViewController, image: UIImageView) {
    let vc = FullScreenImageVC()
    vc.zoomingImageView = image

    vc.hidesBottomBarWhenPushed = false
    context.navigationController?.pushViewController(vc, animated: true)
}

func viewForZooming(in scrollView: UIScrollView) -> UIView? {
    return self.zoomingImageView
}

}

这就是我现在得到的：link to GIF

请，任何帮助将不胜感激。

Answer 1

请检查以下内容显示普通图像查看器控制器

https://github.com/wxxsw/GSImageViewerController

https://github.com/hyperoslo/Lightbox