theme.xml

<?xml version="1.0" encoding="utf-8"?>
<resources xmlns:android="http://schemas.android.com/apk/res/android">
	<style
		name="Theme.MyTheme"
		parent="android:style/Theme.Holo">
		<!-- Setting windowNoTitle to true would turn off the ActionBar -->
		<item name="android:windowNoTitle">false</item>
		<item name="android:windowActionBar">true</item>
	</style>
</resources>