将WKWebView转换为CIImage

Question

I want to convert WKWebView or UIWebView to CIImage . How can I do it?

UIGraphicsBeginImageContext(image.extent.size)
self.webview.layer.render(in:UIGraphicsGetCurrentContext()!)
let result: CIImage = CIImage(image: 
UIGraphicsGetImageFromCurrentImageContext()!, options: nil)!
    UIGraphicsEndImageContext()

I did it like this, but it does not work.I expect that the contents of UIWebView will be displayed in CIImage . Background color has been displayed.

Answer 1

This can be achieved in 2 steps :

1. Convert WKWebView (having base class as UIView ) to UIImageView

    extension UIImage { convenience init(view: UIView) { UIGraphicsBeginImageContext(view.frame.size) view.layer.render(in:UIGraphicsGetCurrentContext()!) let image = UIGraphicsGetImageFromCurrentImageContext() UIGraphicsEndImageContext() self.init(cgImage: image!.cgImage!) } } 

2. Convert the UIImage received from step 1 to CIImage

    let ciimage = CIImage(image: image)