如何使用具有宽高比的图像截取 UIImageiew 的屏幕截图？

Question

I want to take screen shot from imageview with image aspect fit. I tried with this code but it will not get actual result. And I want get screen shot of actual image size

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!
    }

This is what I get I want to screen shot with actual with full actual image size Please help me

Answer 1

    //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)
            }
    }

take a look here:

this function will return your imageview size as image have and viewImgViewContainer is parent view of imageview to set imageview in center.