title: How to get string from firebase realtime db that contain in unique key
body: <p>I want to get a string from this: </p>
  
  <p><a href="https://i.stack.imgur.com/MMZtm.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/MMZtm.jpg" alt="firebase DB"></a></p>
  
  <p>, but it has a unique key parent. How do I get string from db? I tried: </p>
  
  <pre><code>    firebaseAuth = FirebaseAuth.getInstance();
      fUID =firebaseAuth.getCurrentUser().getUid();
      itemsUrl ="https://nextweaverproject.firebaseio.com/users/" + fUID  ;
      mDatabase = FirebaseDatabase.getInstance();
      final DatabaseReference myRef = mDatabase.getReferenceFromUrl(itemsUrl);
      myRef.addChildEventListener(new ChildEventListener() {
              @Override
              public void onChildAdded(DataSnapshot dataSnapshot, String s) {
                  Map&lt;String, Object&gt; td = (HashMap&lt;String,Object&gt;)    dataSnapshot.getValue();
                  List&lt;Object&gt; values = new ArrayList&lt;Object&gt;(td.values());
  
                      strFb = new ArrayList&lt;String&gt;();
                      strFb.add(values.get(0).toString());
  
  
                 // strFb.add(urlLong);
                  Log.v("test","   "  +  strFb.get(strFb.size()-1));
  
          }
  </code></pre>
  
  <p>But It returns all objects in db.</p>