title: Android Navigation view: Scroll the menu items only issue
body: <p>I want to scroll only the menu items of the navigation view but it also scroll the header with it. Please any body tell me how to achieve this... Here is my code:</p>
  
  <p><strong>activity_main.xml</strong></p>
  
  <pre><code>&lt;android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
          .......    
          &lt;android.support.design.widget.NavigationView
              android:id="@+id/navigation_view"
              android:layout_width="wrap_content"
              android:layout_height="match_parent"
              android:layout_gravity="start"
              app:headerLayout="@layout/header"
              app:menu="@menu/drawer" /&gt;
      &lt;/android.support.v4.widget.DrawerLayout&gt;
  </code></pre>
  
  <p><strong>header.xml</strong></p>
  
  <pre><code>    &lt;?xml version="1.0" encoding="utf-8"?&gt;
      &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
          android:layout_width="match_parent"
          android:layout_height="190dp"
          android:background="@drawable/background_material"
          android:orientation="vertical"
          &gt;
  
          &lt;de.hdodenhof.circleimageview.CircleImageView xmlns:app="http://schemas.android.com/apk/res-auto"
              android:id="@+id/profile_image"
              android:layout_width="76dp"
              android:layout_height="76dp"
              android:layout_alignParentLeft="true"
              android:layout_alignParentStart="true"
              android:layout_centerVertical="true"
              android:layout_marginLeft="24dp"
              android:layout_marginStart="24dp"
              android:src="@mipmap/ic_launcher"
              app:border_color="#FF000000" /
      &lt;/RelativeLayout&gt;
  </code></pre>
  
  <p><strong>drawer_menu_items.xml</strong></p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;menu xmlns:android="http://schemas.android.com/apk/res/android"&gt;
  
      &lt;group android:checkableBehavior="single"&gt;
  
          &lt;item
              android:id="@+id/inbox"
              android:checked="false"
              android:icon="@drawable/ic_inbox_black"
              android:title="@string/inbox_string" /&gt;
  
          &lt;item
              android:id="@+id/starred"
              android:checked="false"
              android:icon="@drawable/ic_star_black"
              android:title="@string/starred_string" /&gt;
  
          &lt;item
              android:id="@+id/sent_mail"
              android:checked="false"
              android:icon="@drawable/ic_send_black"
              android:title="@string/sent_mail_string" /&gt;
  
          &lt;item
              android:id="@+id/drafts"
              android:checked="false"
              android:icon="@drawable/ic_drafts_black"
              android:title="@string/draft_string" /&gt;
  
  
          &lt;item
              android:id="@+id/allmail"
              android:checked="false"
              android:icon="@drawable/ic_email_black"
              android:title="@string/all_mail_string" /&gt;
          &lt;item
              android:id="@+id/trash"
              android:checked="false"
              android:icon="@drawable/ic_delete_black"
              android:title="@string/trash_string" /&gt;
          &lt;item
              android:id="@+id/spam"
              android:checked="false"
              android:icon="@drawable/ic_error_black"
              android:title="@string/spam_string" /&gt;
          &lt;item
              android:id="@+id/abc"
              android:checked="false"
              android:icon="@android:drawable/ic_menu_camera"
              android:title="Camera" /&gt;
          &lt;item
              android:id="@+id/abcd"
              android:checked="false"
              android:icon="@android:drawable/ic_menu_call"
              android:title="Call" /&gt;
          &lt;item
              android:id="@+id/abcde"
              android:checked="false"
              android:icon="@android:drawable/ic_menu_gallery"
              android:title="Gallery" /&gt;
  
          &lt;item
  
              android:checked="false"
              android:icon="@android:drawable/ic_menu_gallery"
              android:title="Gallery" /&gt;
          &lt;item
  
              android:checked="false"
              android:icon="@android:drawable/ic_menu_compass"
              android:title="Compass" /&gt;
          &lt;item
  
              android:checked="false"
              android:icon="@android:drawable/ic_menu_myplaces"
              android:title="My Places" /&gt;
  
      &lt;/group&gt;
  &lt;/menu&gt;
  </code></pre>
  
  <p>How can I only scroll the menu item not the header... I've attached some pictures too...<img src="https://i.stack.imgur.com/XazvC.png" alt="Before Scrolling"><img src="https://i.stack.imgur.com/xdae1.png" alt="After Scrolling"></p>