Call functions of Activities Belonging to a Fragment
===

I am working with multiple fragments under Android and am confused on how to send and receive data from embedded apps.  For a simple explanation, I have a List Fragment and a Map Fragment using the method explained here (http://stackoverflow.com/questions/5109336/mapview-in-a-fragment-honeycomb).  This means that the List lives in the ListFragment class, however the MapActivity is an Activity that is called under the LocalActivityManagerFragment.  

Everything works on the individual Fragments: lists of waypoints, waypoints and current location implemented on the Map Fragment.  I also understand how to use getFragmentManager() to get individual fragments and use their events.  However, I cannot use this method to access a function under MapActivity.  How can I use a command such as goToLocation (created under MapActivity) if I click on an item on the ListView, if I can't simply use getFragmentManager??