title: Android - share UI between applications
body: <p>I have an application "app_a" which contains a fragment ("fragment_a") with a RecyclerView to show content. The content is from database of "app_a". There may be some buttons on each RecyclerView item, click these buttons will modify some database value of "app_a".<br>
  I would like to show same content on another application "app_b" without duplicated code. Tap buttons on RecyclerView item in "app_b" will also modify database value of "app_a". Can anyone give me some suggestions to do this?</p>
  
  <p>Thanks.</p>