我正在练习如何在Swift中使用imageView .
我最近尝试在 UIScrollView 进行图像缩放，但我的问题是我不知道如何检查纵向和横向图像大小 . 我的 ImageView 中的人像会显得很奇怪 .
我做错了什么，如何在scrollView中设置不同的imageView大小？
当我在imageView中设置约束时，imageview将无法缩放 . 这是我的代码：
class imageViewController: UIViewController, UIScrollViewDelegate {
var url:String = ""
var id:String = ""
var scrollView:UIScrollView = UIScrollView()
var imageView:UIImageView = UIImageView()
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
}
override func viewDidLoad() {
super.viewDidLoad()
self.automaticallyAdjustsScrollViewInsets = false
imageView.contentMode = .scaleAspectFit
imageView = UIImageView(frame: CGRect(x: 0, y: UIScreen.main.bounds.height*0.2248, width: UIScreen.main.bounds.width, height:UIScreen.main.bounds.height*0.3748))
imageFromUrl(imageView: imageView, url: url, id: id,isResize: false)
scrollView = UIScrollView(frame: CGRect(x: 0, y: 0, width: view.frame.size.width, height: view.frame.size.height))
scrollView.contentSize.width = UIScreen.main.bounds.width
scrollView.contentSize.height = UIScreen.main.bounds.height*0.3748
scrollView.minimumZoomScale = 1
scrollView.maximumZoomScale = 5
scrollView.delegate = self
scrollView.addSubview(imageView)
view.addSubview(scrollView)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
// MARK: - UIScrollViewDelegate
func viewForZooming(in scrollView: UIScrollView) -> UIView? {
return imageView
}
}
