title: Fragment not showing up with recycleView
body: <p>I have a general question.
  After dynamically defining a fragment that contains an EditText and a <code>RecyclerView</code>, by <code>onClicking()</code> a button we are supposed to see that fragment but it doesn't appear.
  Only after I delete the RecyclerView the fragment shows up.</p>
  
  <p>moreover its there any rules for defining a frame layout in <code>XML</code> file to the container of my fragment?
  Thank You :)</p>