How is user_engagement event generated in firebase analytics?

Question

I have seen a param named firebase_screen_class (along with engagement_time_msec, firebase_event_origin and firebase_screen_id) in the user_engagement event in bigQuery, it contains the name of activity classes in my app. Please, can you explain these params and how is the user_engagement event generated?

I also wonder whether this can be useful to get the quantity of impressions or screen views of the activities in my app.

Answer 1

The user_engagement event is triggered when a user interacts with the app for a minimum duration.

This can be controlled using the setMinimumSessionDuration() method call, also the timeout for a session can be controlled using the setSessionTimeoutDuration() call.

For tracking screen view it is recommended to integrate Firebase with GTM. Take a look at this tutorial for implementation details.