title: Start activity without showing it
body: <p>I have an activity A, which starts activity B and activity B starts activity C. Is there a way not to show activity B.
  I want this behavour because if there is no content (eg for ListView) for activity B, show activity C on which I select some data, and then press back button to go back to activity B.
  The point is that I would like to have activity B on activity stack, but not to show it in certain cases.</p>