Closing down a service that has active Threads
<p>When I load my application I also load and Android Service that helps me download files from the internet.</p>

<p>The user may have 1 or more downloads at any given time, all in their own Thread which is managed by the service.  </p>

<p>If the user presses the home button I do not destroy the service but instead let it run, however, if the user presses the back button I do stop() the service as I felt this was the right thing to do (the user would not want stray services running). </p>

<p>This works OK unless there are stray Threads that have not completed yet (this could happen if the internet connection is not active etc.).  </p>

<p>How could I manage this?  How could I stop all Threads as I have no reference to them...or somehow command android to stop my service once all Threads are complete and my app has closed?</p>
