How to call an alarm on iOS, which will resume my radio stream? (e.g. tuneIn Radio)

I am wondering how I can program an alarm clock on iOS, which will resume my radio stream. An example of this behavior is the implementation of an alarm in the TuneIn Radio application.

I tried to use UILocalNotification and resume playing in the didReceiveLocalNotification message, but this is only called after we cancel the notification from the notification. I would like this to trigger without warning.

thank