title: Android: Getting a variable from my running service
body: <p>My activity starts a Service, and when I close my app, the service continues to run.
  OK, that's right. But when I open my application again, in the activity, I need to know the value of a public variable defined on the running Service(class) that I've started previously.</p>
  
  <p>How can I do that?</p>
  
  <p>Thanks</p>