In the guide, you can see that these steps are necessary:
// Obtain the FirebaseAnalytics instance.
mFirebaseAnalytics = FirebaseAnalytics.getInstance(this);
Bundle bundle = new Bundle();
bundle.putString(FirebaseAnalytics.Param.ITEM_ID, id);
bundle.putString(FirebaseAnalytics.Param.ITEM_NAME, name);
bundle.putString(FirebaseAnalytics.Param.CONTENT_TYPE, "image");
mFirebaseAnalytics.logEvent(FirebaseAnalytics.Event.SELECT_CONTENT, bundle);
But are those lines of code necessary? or will it log my activity opens without writting one line of code? (just the apply plugin on the gradle file)
I'm asking this because I'm not seeing anything in the dashboard when I'm testing it without writting that code (only the import, the json and the gradle lines) but my app can receive correctly push notifications.