AndroidFirebase

Example of using Android RecyclerView with Firebase Geofire

Example of different ways to save user location to geofire:

• using Android Firebase SDK + RxJava (worst one)
• using Firebase Cloud Functions API (with Retrofit, highest abstraction)
• using Firebase Cloud Function Database Trigger (shortest one)

Example of Push Notifications using Firebase Cloud Messaging

P.S. Check Firebase Cloud Functions backend code here