title: Communication between fragments that belong to two different activities
body: <p>I'm very new to Android development. </p>
  
  <p>I've made some researches to achieve passing data from Fragment A in Activity A to Fragment B in Activity B. 
  Is that possible? </p>
  
  <p>All I could get from the tutorials on the internet is that we have to create an Interface that will be implemented by the parent Activity of two sibling fragments. How to achieve it when the fragments belong to two different activities? I'm stuck. </p>
  
  <p>Thanks</p>