根据UIImage Ratio调整UIImageView的大小不起作用

问题描述

我有一个UIImageView容器，设置在这里：

    let moviePosterContainer = UIImageView()
    customView.addSubview(moviePosterContainer)
    moviePosterContainer.translatesAutoresizingMaskIntoConstraints = false
    moviePosterContainer.isUserInteractionEnabled = true
    moviePosterContainer.layer.cornerRadius = 10
    moviePosterContainer.clipsToBounds = true
    
    moviePosterContainer.centerXAnchor.constraint(equalTo: customView.centerXAnchor).isActive = true
    moviePosterContainer.centerYAnchor.constraint(equalTo: customView.centerYAnchor).isActive = true

我如何添加UImage：

    moviePosterContainer.sd_setImage(with: URL(string: moviePosterPath),placeholderImage: UIImage(),options: [],completed: { (image,error,cacheType,url) in
            // here image is the UIImage

                        print("image size height width")
                        
                        print(image.size.height)
                        print(image.size.width)
                        
                    print("image sizes")
                    
                    //let ratio = (image?.size.width)! / (image?.size.height)!
                    
                    if let image = image {
                        let ratio = image.size.width / image.size.height
                        print("image ratio w")
                        print(ratio)
                        
                        print("image ratio h")
                        print(image.size.height / image.size.width)

                        if customView.frame.width > customView.frame.height {
                            print("is first")
                            let newHeight = customView.frame.width / ratio
                            print("new height")
                            print(newHeight)
                            moviePosterContainer.frame.size = CGSize(width: customView.frame.width,height: newHeight)
                            print("container frame size first")
                            print(moviePosterContainer.frame.size)
                            
                            print("container ratio")
                            print(newHeight / customView.frame.height)
                        }
                        else{
                            print("is second")
                            let newWidth = customView.frame.height * ratio
                            print("new width")
                            print(newWidth)
                            moviePosterContainer.frame.size = CGSize(width: newWidth,height: self.kolodaView1.frame.height)
                            print("container frame size second")
                            print(moviePosterContainer.frame.size)
                            
                            print("container ratio w")
                            print(newWidth / customView.frame.height)
                            
                            print("container ratio h")
                            print(customView.frame.height / newWidth)
                        }
                    }
                    
                    moviePosterContainer.image = image
                    moviePosterContainer.contentMode = .scaleAspectFit

    })

控制台输出：

image size height width
750.0
500.0
image ratio w
0.6666666666666666
image ratio h
1.5
is second
new width
288.0
container frame size second
(288.0,440.0)
container ratio w
0.6666666666666666
container ratio h
1.5

您可以看到，我的UImageView与UImage的比率相同。

但是我在UImageView中的UIImage仍然无法正确显示。看起来UImage仍然比我的容器大。 ScaleToFit无效。

为什么UIImage无法正确显示？是因为原始图像尺寸大吗？

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。

小编邮箱:dio#foxmail.com (将#修改为@）