I tried what ever was suggested but the output was a white,blank screenshot. Which leads me to assume that I haven't added anything to the view. Here's how I'm adding graphics to my view. The addChild method comes with the SpriteKit and it takes in SKSpriteNodes:
let screenshot = UIGraphicsGetImageFromCurrentImageContext()
UIImageWriteToSavedPhotosAlbum(screenshot, nil, nil, nil)
I think this question could be merged with this one Screenshotting on Iphone in swift only has a white background
which seems the same
I think I found a solution. First read this post: How Do I Take a Screen Shot of a UIView?
I create an Extensions.swift file in which I 'extended' the methods of a UIView using that link.
After that I simply connect the following to my sprite-kit button
let screenshot = self.view?.pb_takeSnapshot() UIImageWriteToSavedPhotosAlbum(screenshot, nil, nil, nil)
Voilà, the image is in the camera roll!