Honeycomb ActionBar Title Shadow

Question

How can I add shadow under the title text?

The following xml doesn't do the trick.

<style name="Theme" parent="android:style/Theme.Holo.Light">
    <item name="android:actionBarStyle">@style/ActionBar</item>
    <item name="android:windowBackground">@drawable/background</item>
</style>

<style name="ActionBar" parent="android:style/Widget.Holo.ActionBar">
    <item name="android:background">@drawable/action_bar</item>
    <item name="android:titleTextStyle">@style/TitleTextStyle</item>
</style>

<style name="TitleTextStyle" parent="android:style/TextAppearance.Large">
    <item name="android:textColor">@color/title_text_color</item>
    <item name="android:textStyle">bold</item>
    <item name="android:shadowColor">@color/title_shadow_color</item>
    <item name="android:shadowDx">0</item>
    <item name="android:shadowDy">0</item>
    <item name="android:shadowRadius">1</item>
</style>

Answer 1

Adding a shadow under the title of the (native) ActionBar works starting with API Level 18 (Android Jelly Bean 4.3). Works fine in API Level 19 (Android KitKat 4.4).

See my answer for XML code and a screenshot.