title: Android: Appcompat 21 how to add shadow on actionbar
body: <p>I add the new material design actionbar from the new appcompat and I use the new toolbar widget. I set a custom background on the toolbar on xml but my problem is that the drop shadow from the actionbar is not displayed. Do you know how to do this?</p>
  
  <p><strong>Toolbar code</strong></p>
  
  <pre><code>&lt;android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto"
      android:id="@+id/my_awesome_toolbar"
      android:layout_height="wrap_content"
      android:layout_width="match_parent"
      android:minHeight="?attr/actionBarSize"
      android:background="@drawable/ab_background_textured"
      app:theme="@style/MyTheme"
      app:popupTheme="@style/MyTheme.Popup"/&gt;
  </code></pre>
  
  <p><strong>MyTheme style</strong></p>
  
  <pre><code>&lt;style name="MyTheme" parent="Theme.AppCompat.Light.DarkActionBar"&gt;
      &lt;item name="android:textColorPrimary"&gt;@color/abc_primary_text_material_dark&lt;/item&gt;
      &lt;item name="actionMenuTextColor"&gt;@color/abc_primary_text_material_dark&lt;/item&gt;
      &lt;item name="android:textColorSecondary"&gt;#ffff8800&lt;/item&gt;
  &lt;/style&gt;
  </code></pre>
  
  <p><strong>MyTheme.Popup style</strong></p>
  
  <pre><code>&lt;style name="MyTheme.Popup" parent="ThemeOverlay.AppCompat.Dark"&gt;
      &lt;item name="android:textColor"&gt;#ffffff&lt;/item&gt;
  &lt;/style&gt;
  </code></pre>
  
  <p><strong>Update</strong></p>
  
  <p>Like @Justin Powell suggested I add the <code>actionBarStyle</code> on my theme but still there is no drop shadow.</p>
  
  <p><strong>MyTheme style(Updated)</strong></p>
  
  <pre><code>&lt;style name="MyTheme" parent="Theme.AppCompat.Light.DarkActionBar"&gt;
      &lt;item name="android:textColorPrimary"&gt;@color/abc_primary_text_material_dark&lt;/item&gt;
      &lt;item name="actionMenuTextColor"&gt;@color/abc_primary_text_material_dark&lt;/item&gt;
      &lt;item name="android:textColorSecondary"&gt;#ffff8800&lt;/item&gt;
      &lt;item name="android:actionBarStyle"&gt;@style/Widget.AppCompat.Light.ActionBar.Solid.Inverse&lt;/item&gt;
  &lt;/style&gt;
  </code></pre>