Ios 如何使用具有方面匹配的图像拍摄UIImageView的屏幕快照？

我想从imageview中拍摄屏幕截图，图像方面适合。我尝试使用此代码，但不会得到实际结果。我想得到实际图像大小的屏幕截图

func captureScreen() -> UIImage
    {
        let layer =  self.layer
        let scale = UIScreen.main.scale
        UIGraphicsBeginImageContextWithOptions(layer.frame.size, false, scale);
        guard let context = UIGraphicsGetCurrentContext() else {return UIImage.init(named: "")!}
        layer.render(in:context)
        let screenshotImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
                
        return screenshotImage!
    }

这就是我得到的 我想用实际的屏幕截图与完整的实际图像大小 请帮助我

//标记：-使用图像大小计算ImageView
    //MARK:- Calculate ImageviewWith image size
    func convertImageViewToImagebounds(image:UIImage, imageView:UIImageView) {
            if image.size.height > image.size.width {
                let ratio = image.size.height / image.size.width
                let newWidth = imageView.frame.size.height / ratio
                imageView.frame.size = CGSize(width: newWidth, height: imageView.frame.size.height)
                imageView.center = CGPoint(x: viewImgViewContainer.frame.width / 2.0, y: viewImgViewContainer.frame.height / 2.0)
            }else if image.size.height < image.size.width {
                let ratio = image.size.width / image.size.height
                let newHeight = imageView.frame.size.width / ratio
                imageView.frame.size = CGSize(width: imageView.frame.size.width, height: newHeight)
                imageView.center = CGPoint(x: viewImgViewContainer.frame.width / 2.0, y: viewImgViewContainer.frame.height / 2.0)
            }else {
                let ratio = image.size.width / image.size.height
                let newHeight = image.size.width / ratio
                imageView.frame.size = CGSize(width: image.size.width, height: newHeight)
                imageView.center = CGPoint(x: viewImgViewContainer.frame.width / 2.0, y: viewImgViewContainer.frame.height / 2.0)
            }
    }

func convertImageViewToImagebounds（图像：UIImage，图像视图：UIImageView）{
如果image.size.height>image.size.width{
let ratio=image.size.height/image.size.width
设newWidth=imageView.frame.size.height/ratio
imageView.frame.size=CGSize（宽度：newWidth，高度：imageView.frame.size.height）
imageView.center=CGPoint（x:viewmgviewcontainer.frame.width/2.0，y:viewmgviewcontainer.frame.height/2.0）
}否则，如果image.size.height

请看这里：

---

此函数将返回您的

imageview

大小作为

image

have，并且viewImgViewContainer是imageview的父视图，用于将imageview设置在中间。

您的图像大小是layer.frame.size？什么是self.layer？是的，那是我的imageview层@eltomato您可以使用

imagview.contentMode=.aspectfill

实现它，我问题中的屏幕截图已经从set.aspectfill@RB's@KamleshShingarakhiya但在这里，您在问题中提到了

方面适合性

。谢谢。它会变大