java - retrieving data from firebase android

Question

I am studying in France and I have trouble finding French tutorials to solve my problem. I am therefore obliged to ask my question, hoping to have a satisfactory solution.

My problem is that I have trouble reading my data on firebase and I have spent three days on it.

I have a structure like this:

I had started to code something, I was able to recover the key but I could not recuperate these values "nom" "argent" etc .

private Firebase mRef ;
mRef = new Firebase("https://authent-50e6b.firebaseio.com/users");
mRef.addChildEventListener(new ChildEventListener() { 
    @Override
   public void onChildAdded(DataSnapshot dataSnapshot, String s) {
        String cle = dataSnapshot.getKey();
        Toast.makeText(ListeActivity.this,"la cle est : "+cle ,Toast.LENGTH_SHORT).show();

Answer 1

Waitting for answers