title: In-App Review : How to correctly implement it
body: <p>I have been trying to implement the In-App Review launched recently by Google.
  I am not able to see the review dialog even though I get a response stating that the flow was successful.</p>
  <pre><code>    ReviewManager manager = ReviewManagerFactory.create(this);
      Task&lt;ReviewInfo&gt; request = manager.requestReviewFlow();
      request.addOnCompleteListener(task -&gt; {
          if (task.isSuccessful()) {
              ReviewInfo reviewInfo = task.getResult();
      Task&lt;Void&gt; flow = manager.launchReviewFlow(activity, reviewInfo);
      flow.addOnCompleteListener(task -&gt; {
  
             //** I reach here with the status of task as successful.
  
      });
          } else {
              // There was some problem, continue regardless of the result.
          }
      });
  </code></pre>
  <p>Should I publish my app update directly on play store? Or am I doing something wrong?</p>