dialog的style 引入了v7还是提示错误，求解决？

Question

    <style name="Theme.Transparent" parent="@android:Theme.DeviceDefalt.Light.Dialog">
       <item name="android:windowIsTranslucent">true</item> 
        <item name="android:windowBackground">@android:color/transparent</item>
        <item name="android:windowContentOverlay">@null</item>
        <item name="android:windowNoTitle">true</item>
    </style>

error: Error retrieving parent for item: No resource found that matches the given name 

 '@android:Theme.DeviceDefalt.Light.Dialog'.