Google, Facebook and AppleID authentication already exist, but why no email authentication? There are users who do not want to log in with their Google or Facebook account.
Start with this tutorial: https://www.b4x.com/android/forum/threads/firebase-integration.68623/ FirebaseAuth allows your app to identify the user based on their Google or Facebook accounts. We will start with Google integration. 1. Make sure that Google is enabled under Authentication -...
Not all API commands I have implemented and tested, if you have problems, then ask in the comments or in a new thread. With this class you can register and log in your users via email and password. And a lot more... Setup: put your API Key in the Class_Globals Private const API_KEY As String...