Android Firebase Retrieve Data From All Nodes (nested) In Fragments

I want my app to retrieve firebase data in 2 ways: Retrieve data for currently logged in user, which I have done using .child(user.getUid()), user = firebaseAuth.getCurrentUser()

Solution 1:

Hello you can make something like this:

Databaseref.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            for (DataSnapshot shot : dataSnapshot.getChildren()) {
            }
        }
});

Where each element of dataSnapshot.getChildren() is a user on your node with the key of the uid.