Android操作模式视图背景色无法更改

您好，这是我的样式属性，myAppTheme是我的应用程序的主题，MyActionModeStyle是我的actionmode的样式

      <style name="myAppTheme" parent="Theme.AppCompat.Light">
        <item name="colorPrimary">@color/primaryColor</item>
        <item name="colorPrimaryDark">@color/primary_dark</item>
        <item name="android:windowNoTitle">true</item>
        <item name="windowActionBar">false</item>
        <item name="drawerArrowStyle">@style/DrawerArrowStyle</item>
        <item name="android:actionBarStyle">@style/MyActionBar</item>
        <item name="windowActionModeOverlay">true</item>
        <item name="android:windowActionModeOverlay">true</item>
        <item name="actionModeStyle">@style/MyActionModeStyle</item>
    </style>

    <style name="MyActionModeStyle" parent="Widget.AppCompat.ActionMode">
        <item name="actionModeBackground">@drawable/red_bg</item>
        <item name="android:actionModeBackground">@drawable/red_bg</item>
        <item name="backgroundSplit">@drawable/red_bg</item>
        <item name="android:backgroundSplit">@drawable/red_bg</item>
        <item name="android:titleTextStyle">@style/ActionModeText</item>
        <item name="titleTextStyle">@style/ActionModeText</item>
    </style>

I want to change the background of action ode to red color but unfortunately nothing happends, still action mode is in default white color.. How can i change its color.. Any idea ?

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哦!！最后我找到了一个解决方案。我把我的动作模式自定义主题改为活动主题。现在它可以工作了。。这是我活动的自定义主题

android:theme="@style/customActionModeTheme" 

这是我的定制风格

<style name="customActionModeTheme" parent="myAppTheme"> 
    <item name="android:actionModeBackground">@color/primaryColor</item> 
    <item name="actionModeBackground">@color/primaryColor</item> 
</style>