下面是你如何能更改动作条背景：

Here's how you can change the actionbar background:

<style name="MyTheme" parent="Theme.Sherlock">
    <item name="actionBarStyle">@style/MyActionBar</item>
    <item name="android:actionBarStyle">@style/MyActionBar</item>
</style>

<style name="MyActionBar" parent="Widget.Sherlock.ActionBar">
    <item name="background">@drawable/your_custom_drawable</item>
    <item name="android:background">@drawable/your_custom_drawable</item>
</style>