title: ConstraintLayout RecyclerView displays under BottomNavigationView
body: <p>How to get the RecyclerView not displaying under BottomNavigationView with ConstraintLayout.</p>
  
  <p>Here is the result (the recycler is supposed to display 20 elements)</p>
  
  <p><a href="https://i.stack.imgur.com/nyVb5.gif" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/nyVb5.gif" alt="enter image description here"></a></p>
  
  <p>And here is the xml </p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;android.support.constraint.ConstraintLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto"
      xmlns:tools="http://schemas.android.com/tools"
      android:id="@+id/container"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      tools:context=".MainActivity"&gt;
  
      &lt;android.support.v7.widget.RecyclerView
          android:id="@+id/myListSimple"
          android:scrollbars="vertical"
          android:layout_width="match_parent"
          android:layout_height="match_parent"/&gt;
  
      &lt;android.support.design.widget.BottomNavigationView
          android:id="@+id/navigation"
          android:layout_width="0dp"
          android:layout_height="wrap_content"
          android:layout_marginEnd="0dp"
          android:layout_marginStart="0dp"
          android:background="?android:attr/windowBackground"
          app:layout_constraintBottom_toBottomOf="parent"
          app:layout_constraintLeft_toLeftOf="parent"
          app:layout_constraintRight_toRightOf="parent"
          app:menu="@menu/navigation"/&gt;
  
  &lt;/android.support.constraint.ConstraintLayout&gt;
  </code></pre>