<span style="font-size:18px;"> </span>要让Activity的标题栏不被显示的情况分两种:
<activity android:name=".MainActivity" android:label="@string/title_activity_main" android:theme="@android:style/Theme.NoTitleBar" >
<activity android:name=".MainActivity" android:label="@string/title_activity_main" android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >
原文地址:http://blog.csdn.net/wangguangrong/article/details/39397143