工程的values里面的styles.xml里 

 

<style name="AppBaseTheme" parent="android:Theme.Holo.Light.NoActionBar.TranslucentDecor  "> //未测试

  <style name="AppTheme" parent="AppBaseTheme">

        <!-- All customizations that are NOT specific to a particular API-level can go here. -->

        <item name="android:windowContentOverlay">@null</item>//重点在这里

        <item name="android:windowTranslucentStatus">true</item>  //未测试

  <!-- Navigation Bar --> 

  <item name="android:windowTranslucentNavigation">true</item>  //未测试

    </style>