title: Android hide NavigationView header
body: <p>I am working on an android app and it requires <strong>DrawerLayout</strong> below the <strong>ToolBar</strong>. I've achieved that but NavigationView's header i.e <code>Status Bar 24dp</code> is visible even after removing the header. 
  Is there a way to remove that?</p>
  
  <p><img src="https://i.stack.imgur.com/8YI9e.png" alt="Problem"></p>
  
  <p><strong>XML file:</strong> </p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;RelativeLayout
      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:layout_width="match_parent"
      android:layout_height="match_parent"
      android:orientation="vertical"
      &gt;
  
      &lt;include
          layout="@layout/app_bar_home"
          android:layout_width="match_parent"
          android:layout_height="match_parent"/&gt;
  
      &lt;android.support.v4.widget.DrawerLayout
          android:layout_marginTop="?android:attr/actionBarSize"
          android:id="@+id/drawer_layout"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
         &gt;
  
          &lt;android.support.design.widget.NavigationView
              android:paddingBottom="0dp"
              android:id="@+id/nav_view"
              android:layout_width="wrap_content"
              android:layout_height="match_parent"
              android:layout_gravity="start"
              app:headerLayout="@null"
              app:menu="@menu/activity_home_drawer"/&gt;
  
      &lt;/android.support.v4.widget.DrawerLayout&gt;
  &lt;/RelativeLayout&gt;
  </code></pre>