title: Flutter Android Platform EventChannel not stopping when back button press destroy application
body: <p>I am trying to create a flutter application which uses the background service from native android plugin I am creating: a simple counter application which sends count value after every 5 seconds through EventChannel.</p>
  
  <p>When I press the back button and the application is destroyed, the service is still running (that's what I want to do). But when I open the application again, the event sink is no longer sending data to new flutter view.
  I think the event channel plugin is not stopping.</p>