title: fitSystemWindows not working in a coordinated layout
body: <p>I have implemented a ViewPager Activity (see layout below). The problem is navigationTabBar is always hidden. </p>
  
  <p>With no luck, I have tried tinkering with fitSystemWindows.</p>
  
  <h2>Layout:</h2>
  
  <pre><code>&lt;android.support.design.widget.CoordinatorLayout 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:id="@+id/tabbed_main"
  android:background="#FFFFFF"
  android:screenOrientation="portrait"
  xmlns:fab="http://schemas.android.com/apk/res-auto"&gt;
  &lt;RelativeLayout
      android:layout_width="match_parent"
      android:layout_height="match_parent"&gt;
      &lt;LinearLayout
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:isScrollContainer="true"
          android:scrollbars="none"&gt;
          &lt;android.support.v4.view.ViewPager
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:id="@+id/vp_horizontal_ntb"
              android:gravity="center"
              android:paddingLeft="0dp"
              android:paddingRight="0dp"
              app:layout_behavior="@string/appbar_scrolling_view_behavior" /&gt;
      &lt;/LinearLayout&gt;
  &lt;/RelativeLayout&gt;
  
  &lt;LinearLayout
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_gravity="bottom"
      android:fitsSystemWindows="true"&gt;
  &lt;com.gigamole.navigationtabbar.ntb.NavigationTabBar
      android:layout_width="match_parent"
      android:layout_height="60dp"
      android:id="@+id/ntb_horizontal"
      app:ntb_badge_size="12sp"
      app:ntb_badge_bg_color="#ffff0000"
      app:ntb_badge_gravity="top"
      app:ntb_badge_position="right"
      app:ntb_badge_title_color="#ffffffff"
      app:ntb_badge_use_typeface="true"
      app:ntb_badged="true"
      app:ntb_animation_duration="400" /&gt;
  &lt;/LinearLayout&gt;
  
  
  &lt;com.getbase.floatingactionbutton.FloatingActionsMenu
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_gravity="bottom|end"
      android:id="@+id/create_new_button"
      android:layout_marginBottom="60dp"
      android:layout_marginRight="16dp"
      android:layout_marginEnd="16dp"
      fab:fab_addButtonColorNormal="@color/white_add"
      fab:fab_addButtonColorPressed="@color/white_pressed"
      fab:fab_addButtonPlusIconColor="@color/half_black"
      fab:fab_labelStyle="@style/menu_labels_style"&gt;
      &lt;com.getbase.floatingactionbutton.FloatingActionButton
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:id="@+id/action_create_post"
          fab:fab_colorNormal="@color/white_add"
          fab:fab_title="Create New Post"
          fab:fab_icon="@drawable/ic_create_black_24dp"
          fab:fab_colorPressed="@color/white_pressed"/&gt;
      &lt;com.getbase.floatingactionbutton.FloatingActionButton
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:id="@+id/action_create_new_message"
          fab:fab_colorNormal="@color/white_add"
          fab:fab_title="Write New Message"
          fab:fab_icon="@drawable/ic_insert_comment_black_24dp"
          fab:fab_colorPressed="@color/white_pressed"/&gt;
      &lt;com.getbase.floatingactionbutton.FloatingActionButton
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:id="@+id/action_upload_new_album"
          fab:fab_colorNormal="@color/white_add"
          fab:fab_title="Upload New Album"
          fab:fab_icon="@drawable/ic_add_a_photo_black_24dp"
          fab:fab_colorPressed="@color/white_pressed"/&gt;
  &lt;/com.getbase.floatingactionbutton.FloatingActionsMenu&gt;
  
  &lt;/android.support.design.widget.CoordinatorLayout&gt;
  </code></pre>
  
  <p><strong>N.B.-</strong> This topic has been discussed <strong>link goes here</strong>, and <strong>here</strong>; They all seem have not solve my problem.</p>
  
  <h2>Update: Add screenshot.</h2>
  
  <p><a href="http://i.stack.imgur.com/XqqX4.png" rel="nofollow">screenshot</a></p>