oulingWeibo/res/values/styles.xml

<?xml version="1.0" encoding="UTF-8"?>
<resources>
    <style name="CustomWindowTitleBackground"> 
    	<item name="android:background">@drawable/gray_gradient</item> 
	</style>
	<style name="test" parent="android:Theme"> 
	    <item name="android:windowTitleSize">40dp</item> 
	    <item name="android:windowTitleBackgroundStyle">@style/CustomWindowTitleBackground</item>
	</style>
	<style name="mytheme" parent="android:Theme.Black">
		<item name="android:textSize">15sp</item>
		<item name="android:textColor">#FFFFFFFF</item>
	</style>
</resources>