Getting a full screenshot of a UIScrollView in iOS 13 - ios

Question

I am using Swift 5 and iOS 13. I am trying to take a screenshot of the entire scrollview image and print it, but the bottom appears in white. How can i solve this problem? I showed and explained everything in the picture below.
I am also checked this topic
My extension code like this:
extension UIScrollView {
func screenshot() -> UIImage {
let savedContentOffset = contentOffset
let savedFrame = frame
UIGraphicsBeginImageContextWithOptions(contentSize, false, 0)
contentOffset = .zero
frame = CGRect(x: 0, y: 0, width: contentSize.width, height: contentSize.height)
layer.render(in: UIGraphicsGetCurrentContext()!)
let image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
contentOffset = savedContentOffset
frame = savedFrame
return image ?? UIImage()
}
}

Answer 1

Here is the code snippet that worked for me.
extension UIView {
func snapshot(scrollView: UIScrollView) -> UIImage? {
UIGraphicsBeginImageContextWithOptions(scrollView.contentSize, false, UIScreen.main.scale)
layer.render(in: UIGraphicsGetCurrentContext()!)
let savedContentOffset = scrollView.contentOffset
let savedFrame = frame
scrollView.contentOffset = CGPoint.zero
frame = CGRect(x: 0, y: 0, width: scrollView.contentSize.width, height: scrollView.contentSize.height)
layer.render(in: UIGraphicsGetCurrentContext()!)
let image = UIGraphicsGetImageFromCurrentImageContext()
scrollView.contentOffset = savedContentOffset
frame = savedFrame
UIGraphicsEndImageContext()
return image
}
}
And when you call it:
view.snapshot(scrollView: scrollView)

Answer 2

It's seems like iOS 13 bug but I found the solution in this answer.
The solution is I am removing scrollview from superview and then adding in with its old constraints after taking the screenshot. Yeah, it's stupid but it just works that way :(
scrollView.removeFromSuperview()
let print = scrollView.screenshot()
mainView.addSubview(scrollView)
scrollView.snp.makeConstraints { (make) in
make.top.equalTo(topView.snp.bottom)
make.left.bottom.right.equalToSuperview()
}