Android 修改Activity标题样式 actionBar

    <!-- Application theme. -->
    <style name="AppTheme" parent="AppBaseTheme">
        <!-- All customizations that are NOT specific to a particular API-level can go here. -->
        <!-- <item name="android:windowBackground">@color/darkBlue</item> -->
        <!-- <item name="android:colorBackground">@color/darkBlue</item> -->
        <item name="android:actionBarStyle">@style/myActionBarStyle</item> 

    </style>

    <style name="myActionBarStyle" parent="android:Widget.ActionBar">
        <item name="android:background">@color/darkBlue</item>
        <item name="android:titleTextStyle">@style/AcBar_titleStyle</item>
    </style>

    <style name="AcBar_titleStyle">
        <item name="android:textSize">18sp</item>
        <item name="android:textColor">#FFFFFF</item>
    </style>