1 可以在xml中配置2.0之后
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@android:style/Theme.Light.NoTitleBar" >
2 编程配置
requestWindowFeature(Window.FEATURE_NO_TITLE);
3.styles.xml 4.0之后
<!-- Application theme. -->
<style name="AppTheme" parent="AppBaseTheme"> <!-- All customizations that are NOT specific to a particular API-level can go here. -->
<item name="android:windowNoTitle">true</item>
</style>