I am working with Unity 4.5 and X-Code 6.1. The Instructions I found in the docs here, https://docs.gamesparks.net/howtos/push-notifications/how-to-configure-ios-push-notifications , don't seem to apply to the latest Unity3d build for X-Code.

Sure Shane,

First of all the instructions ask you to edit AppDelegate.mm, but that does not exist in my project. Instead the functions that we are asked to modify exist in UnityAppController.mm.

After making the modifications in UnityAppController.mm  I get the error the GSApi is undefined. Since I don't know Objective C or Xcode very well. I do not know how to include that library or file and correct that error.

Looks like the SDK for GameSparks was not included when Unity built the project. So I have included it and other required libraries . I no longer receive compilation or linkage errors however my app still does not receive push notifications. In fact I don't even get the pop-up asking me if  I would like to allow it when I run the app.

I don't know which version of Unity you're using, but in our project we're using 4.6 b21 and I had to follow the instructions here to make it work:

https://chsxf.wordpress.com/2014/09/24/unity-pro-tip-2-ios-8-push-notifications/

Then in our main scene Start() function (or wherever you want the popup to show up) I coded this:

        private bool registrationErrorDone;
        private bool pushRegistrationRequestDone;
        
        
        voir Start()
        {
#if UNITY_IPHONE && !UNITY_EDITOR
            CBGNotificationServices.RegisterForRemoteNotificationTypes(RemoteNotificationType.Alert | RemoteNotificationType.Badge | RemoteNotificationType.Sound);
#endif
        }
        
        void Update()
        {
            ...
            ManagePushNotifications ()
            ...
        }
        
        private void ManagePushNotifications ()
        {
#if UNITY_IPHONE             
            if (!registrationErrorDone && NotificationServices.registrationError != null) {
                registrationErrorDone = true;
                Debug.Log ("NotificationServices.registrationError: " + NotificationServices.registrationError);
            }
            if (!pushRegistrationRequestDone && NotificationServices.deviceToken != null) {
                pushRegistrationRequestDone = true;
                string deviceToken = System.BitConverter.ToString (NotificationServices.deviceToken).Replace ("-", "").ToLower ();
                GameSparksSender sender = GameSparks.GameSparksApi.pushRegistrationRequest (deviceToken);
                sender.sendAsync ((response) => {});                
            }
#endif
        }