title: How to get all nested child's data in Firebase database?
body: <p>I have a Firebase database structure below. How do I get the value of <code>room_name_public</code>? I want to retrieve all those values and show it in a list view. Here, <code>55aqdTkLPrMwB6H0KX4Z0RUe6s52</code> is a Firebase userID and <code>-KcqR5Db5BidD0XpQ1z1</code> is created by the <code>push()</code> function.</p>
  
  <p><a href="https://i.stack.imgur.com/v2dHF.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/v2dHF.png" alt="enter image description here"></a></p>