How do I create a UIImage from a CGImage in Swift?
If you look at the docs in Xcode6 you will see that posterImage() returns a Unmanaged<CGImage>! (in Swift, in ObjC it returns a CGImageRef). After some investigation from the docs I found this:
When you receive an unmanaged object from an unannotated API, you should immediately convert it to a memory managed object before you work with it.
So your solution would be:
UIImage(CGImage: group.posterImage().takeUnretainedValue())
Are you sure group.posterImage is not an optional?
have you tried
var img = UIImage(CGImage: group.posterImage!)
Here's an example that should work for you with Xcode 8.3:
let frame = CGRect(origin: CGPoint(x: 0, y: 0), size: CGSize(width: 1920, height: 1080)) let cgImage = CIContext().createCGImage(CIImage(color: .black()), from: frame)! let uiImage = UIImage(cgImage: cgImage)