Android基础TOP5_5：设置没有标题栏而且用系统壁纸当背景的界面

在res/values目录下的style.xml设置如下

 <style name="AppBaseTheme" parent="android:Theme.Wallpaper.NoTitleBar">

 <resources>     <!--
         Base application theme, dependent on API level. This theme is replaced
         by AppBaseTheme from res/values-vXX/styles.xml on newer devices.
     -->
     <style name="AppBaseTheme" parent="android:Theme.Wallpaper.NoTitleBar">
         <!--
             Theme customizations available in newer API levels can go in
             res/values-vXX/styles.xml, while customizations related to
             backward-compatibility can go here.
         -->
     </style>     <!-- Application theme. -->
     <style name="AppTheme" parent="android:Theme.Wallpaper.NoTitleBar">
         <!-- All customizations that are NOT specific to a particular API-level can go here. -->
     </style> </resources>