title: Reading list of data from firebase in android studio
body: <p>I would like to request you to please tell me how to read the data :
  i)Order Details from every unique id node
  ii)Order Items from every unique id node.</p>
  <p>please someone tell me . I cannot figure out a way. please !!!</p>
  <p>please see the image that I have uploaded.<a href="https://i.stack.imgur.com/VY1Ys.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/VY1Ys.jpg" alt="enter image description here" /></a></p>