Saving an image on top of another image in Swift

Question

I am learning Swift and I am creating an app that uses a personal photo and puts another on top of it. I now have a hacky solution, to create a screenshot of the area and sa

Answer 1

UPDATE FOR SWIFT 4

func saveImage() {
    let bottomImage = UIImage(named: "your bottom image name")!
    let topImage = UIImage(named: "your top image name")!            
    let newSize = CGSize(width: 100, height: 100)   // set this to what you need
    UIGraphicsBeginImageContextWithOptions(newSize, false, 0.0)
    bottomImage.draw(in: CGRect(origin: CGPoint.zero, size: newSize))
    topImage.draw(in: CGRect(origin: CGPoint.zero, size: newSize))
    let newImage = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()
}

To use the image just refer to newImage

EXAMPLE HOW TO USE THE IMAGE:

@IBOutlet weak var imageButton: UIButton!
imageButton.setBackgroundImage(newImage), for: .normal) 

This is an edit of cnoon's answer but optimized for Swift 4.