title: How to remove divider in bottom of the AppBarLayout
body: <p><a href="https://i.stack.imgur.com/JI8Je.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/JI8Je.png" alt="enter image description here"></a></p>
  
  <p>I want to remove the divider line like in the picture above. I've tried anything but still no luck. This is what I have tried until now.
  styles.xml</p>
  
  <pre><code>&lt;resources&gt;
  
  &lt;!-- Base application theme. --&gt;
  &lt;style name="AppTheme" parent="MaterialDrawerTheme.Light.DarkToolbar"&gt;
      &lt;item name="android:windowContentOverlay"&gt;@null&lt;/item&gt;
      &lt;item name="actionBarDivider"&gt;@null&lt;/item&gt;
      &lt;item name="android:actionBarDivider"&gt;@null&lt;/item&gt;
  &lt;/style&gt;
  
  &lt;style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar"&gt;
  &lt;item name="android:windowContentOverlay"&gt;@null&lt;/item&gt;&lt;/style&gt;
  
  &lt;style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" /&gt;
  
  &lt;/resources&gt;
  </code></pre>
  
  <p>fragment.xml</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  </code></pre>
  
  <p></p>
  
  <pre><code>&lt;android.support.design.widget.CoordinatorLayout
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:fitsSystemWindows="true"&gt;
  
      &lt;android.support.design.widget.AppBarLayout
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:theme="@style/AppTheme.AppBarOverlay"
          android:fitsSystemWindows="true"
          app:elevation="0dp"&gt;
  
          &lt;android.support.design.widget.TabLayout
              android:id="@+id/tab_layout"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              app:tabMode="fixed"
              app:tabGravity="fill"
              android:fillViewport="false" /&gt;
          &lt;com.jaredrummler.materialspinner.MaterialSpinner
              android:id="@+id/spinner"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:textColor="#000000"
              /&gt;
      &lt;/android.support.design.widget.AppBarLayout&gt;
  
      &lt;android.support.v4.view.ViewPager
          android:id="@+id/view_pager"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          app:layout_behavior="@string/appbar_scrolling_view_behavior"/&gt;
  
  
  
  &lt;/android.support.design.widget.CoordinatorLayout&gt;
  
  &lt;/layout&gt;
  </code></pre>
  
  <p>Is anyone has the solution for this issue ? Sorry for my bad English and thanks in advance !</p>