title: refresh state on going to previous scene in react native from native (android) activity after pressing back button
body: <p>I am new to react native and I want to know what is the ideal way handle such situations. Here is the situation:
  I have say 4 screens </p>
  
  <pre><code>(Native)A, (React-Native)B, (React-Native)C, (Native)D
  </code></pre>
  
  <p>my app has login options for the user from all 4 screens. </p>
  
  <p>now the user navigates from <strong>A to B to C to D</strong>. Now he decides to login and then he goes back to <strong>scree C</strong> (which is react native), Now the problem is how to show new state of <strong>screen C</strong> ( user logged in state) and similarly of <strong>B</strong> .</p>