title: Start Activity from notification and return to previous activity
body: <p>In my app, I have two Activites, A and B. A is the root/launcher Activity, and B is started from a push notification. If the user is in another app, and clicks a push notification for mine, Activity B will be started. When I call finish() on this Activity, I expect the user to be returned to the app they were in before clicking the notification. Instead, they are brought to Activity A, the root Activity.</p>
  
  <p>Is there a way to start an Activity from a notification, and then finish the Activity and return the user to the app they were in previously?</p>