title: Best way to communicate between 2 Fragments in different activities?
body: <p>I have a scenario with <strong>Activity A</strong> having tabs, <strong>Fragment 1,2,3,4</strong>. Here Fragment 2 opens <strong>Activity B</strong> which has multiple <strong>Fragments 1,2,3,4</strong>. Now from Activity B (Fragment 4), I want to send a result back to Activity A's Fragment 2 which was there in the background. What will be the best way to do that?</p>
  <p>Currently, I am thinking to use Result API to open Activity B, and from Fragment 4 of Activity B, set Result somehow(now sure how). Should I set the result in Activity B first, which will then set the result for Activity A's Fragment 2?</p>