title: Notification to restore a task rather than a specific activity?
body: <p>I have a foreground service that keeps a connection open with the server as long as the user is logged into the application. This is so that the connection is kept alive and can receive messages directly from the server even when the application has been sent into the background by the user pressing Home.</p>
  
  <p>The application has a number of Activities, any of which could be the active one when it is sent into the background.</p>
  
  <p>I would like to allow the user to click on the notification to restore the current Activity. I understand how to restore a particular activity, but wondered if there is a way to restore the last Activity that the user was on? Of course I could keep track of the the last one, and then call that from the Notification callback, but thought there might be a way at a task level?</p>
  
  <p>Thanks for any advice you can offer.</p>