There are 1 repository under friendlychat topic.
Simple Firebase based Android Messaging Chat App.
Materi selengkapnya bisa dilihat disini https://classroom.udacity.com/courses/ud0351
Exercises for Firebase in a Weekend: Android by Google Udacity course
It is a codelab: https://codelabs.developers.google.com/codelabs/flutter/#0
Real time chat application using firebase
Udacity course Google Firebase in a Weekend (Android) sample project
FriendlyChat with firebase