Delegate and Protocols

What do you mean by including sound ?

If you want to pass the reference of a sound, that's pretty easy

For a system sound, such as kSystemSoundID_Vibrate :

add to protocol

protocol GreetingsDelegate {
    func userTappedGreet(image: UIImage, name: String, sound: SystemSoundID)
}

you call as

    func userTappedGreet(image: UIImage, name: String, sound: SystemSoundID) {
        receivingImage.image = image
        receivingGreeting.text = name
        AudioServicesPlaySystemSound(SystemSoundID(sound))
    }

You can also pass your own registered sound : then pass 2 strings as parameters

protocol GreetingsDelegate {
    func userTappedGreet(image: UIImage, name: String, soundResource: String, soundType: String)
}

    func userTappedGreet(image: UIImage, name: String, soundResource: String, soundType: String) {
        receivingImage.image = image
        receivingGreeting.text = name
         let filePath = Bundle.main.path(forResource: "ButtonTap", ofType: "wav")
         let fileURL = URL(fileURLWithPath: filePath!)
         var soundID:SystemSoundID = 0
         AudioServicesCreateSystemSoundID(fileURL as CFURL, &soundID)
         AudioServicesPlaySystemSound(soundID)
    }

In IBAction :

    @IBAction func doIt(_ sender: Any) {
        delegate?.userTappedGreet(image: UIImage(named: "MyImage")!, name: "HelloMoon", soundResource: "ButtonTap", soundType: "wav")
        dismiss(animated: true, completion: nil)
    }

"ButtonTap.wav" is a file in your project

Hi Claude31,

The simulator crashes when passing data back to the delegate VC.

On the: let fileURL = URL(fileURLWithPath: filePath!) line is the Thread1 unexpectedly found nil while unwrapping...

Also, say there are more than one soundFile, shouldn't the constant in the function be:

let filePath = Bundle.main.path(forResource: "", ofType: "")

and only in the @IBOutlet do I call the particupar sound file object

i.e.

delegate?.userTappedGreet(image: UIImage(named: "MyImage")!, name: "HelloMoon", soundResource: "ButtonTapped", soundType: "wav")

dismiss(animated: true, completion: nil)

?

As I wrote, this assumes that you have included in your project the file ButtonTap.wav

So, a more secure coding is to test for nil (but normally, that should always be OK)

     if let filePath = Bundle.main.path(forResource: "ButtonTap", ofType: "wav") {
         let fileURL = URL(fileURLWithPath: filePath) 
         var soundID:SystemSoundID = 0 
         AudioServicesCreateSystemSoundID(fileURL as CFURL, &soundID) 
         AudioServicesPlaySystemSound(soundID) 
     }

No need for an IBOutlet for it.