Firebase database getInstance crashes app

Question

When running the sample after creating google-service.json, the app crashes when trying to get database reference in SignInActivity

mDatabase = FirebaseDatab         


        

Answer 1

mFirebaseDatabaseReference = database.getInstance().getReference("root-element in firebase");

When you call getReference you need to provide a URL. If your project is bound already in Firebase with the database you have created, use the root element of the data in Firebase as the parameter to getReference().