I\'m trying to utilize the Review API (Play Core library 1.8.0) from Google which was just released yesterday. See https://developer.android.com/guide/playcore/in-app-review
I have raised a issue on google issue tracker regarding this. I also have the same issue.
For more info check this my issue tracking url: https://issuetracker.google.com/issues/167352813
Please test using FakeReviewManager :)
ReviewManager manager = new FakeReviewManager(context);
https://developer.android.com/guide/playcore/in-app-review/test
I had exactly the same problem, the dialog never appeared to me ...
But even so, I left it implemented in the application and posted it on the Play store.
Then I downloaded and tested the version and everything works perfectly.