在styles.xml文件中添加代码:
隐藏状态栏
<item name="android:windowFullscreen">true</item>
隐藏标题栏
<item name="windowNoTitle">true</item>
都隐藏就一起写
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="windowNoTitle">true</item>
<item name="android:windowFullscreen">true</item>
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
</style>
这是针对所有activity的