I’m trying to add a badge count to push notifications to Android that I’m sending using Firebase Cloud Messaging and kreait/firebase-php.

My app is an appointment app and I want each notification to show the number of upcoming appointments in the badge.

With iOS, I can set the badge count using

  $message->withApnsConfig(ApnsConfig::new()->withBadge($badge_count));

How do I do the same thing for Android?

The Android API docs mention setNumber(), but I can’t find where to call this in firebase-php.