Android: Firebase ChildEventListener() not working
<p>I am working in my app with Firebase and I tried to use onChildAdded() callback but I think I am doing something wrong because I get no response.</p>

<pre><code>/**
 * Constructor
 */
private FirebaseManager(Context context) {
    Firebase.setAndroidContext(context);
    Firebase.getDefaultConfig().setPersistenceEnabled(true);
    mFirebaseRef = new Firebase(FIREBASE_URL);
}
</code></pre>

<hr>

<pre><code>public void checkUsers() {
    Firebase checkRef = mFirebaseRef.child("/data/users/");
    // Also tried 
    // Firebase checkRef = mFirebaseRef.child("data").child("users");
    checkRef.addChildEventListener(new ChildEventListener() {
        @Override
        public void onChildAdded(DataSnapshot dataSnapshot, String s) {
            Log.d(TAG,"New child added");
        }

        @Override
        public void onChildChanged(DataSnapshot dataSnapshot, String s) {

        }

        @Override
        public void onChildRemoved(DataSnapshot dataSnapshot) {

        }

        @Override
        public void onChildMoved(DataSnapshot dataSnapshot, String s) {

        }

        @Override
        public void onCancelled(FirebaseError firebaseError) {

        }


    });
}
</code></pre>

<p>In onCreate() of my MainActivity I authenticate the user and the call checkUsers(). After that I manually add a new user in database. But I get nothing in log.
This is the json structure:</p>

<p><a href="https://i.stack.imgur.com/RIkQ4.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/RIkQ4.png" alt="enter image description here"></a></p>

<p><strong>What am I doing wrong?</strong></p>