如何在按下时设置MenuItems工具栏的样式(How to styling MenuItems Toolbar when pressed)

 在KitKat中，我在受支持的库工具栏中有一个样式化的选项菜单，定义如下 
 
    <android.support.v7.widget.Toolbar
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:background="?attr/colorPrimary"
    app:theme="@style/ToolbarText"
    app:popupTheme="@style/optionMenu" 
    />
 
 optionMenu样式的位置 
 
<style name="optionMenu">
    <item name="android:textColor">@color/menu_text</item>  
    <item name="android:background">@color/menu_background</item>

</style>
 
 它按预期工作，但是当我按下MenuItems时，它不会在所有可用空间中采用“默认灰色”颜色，而是仅在菜单元素周围的边缘上，其背景保持颜色，如样式中所定义。 我的目标不是改变压缩事件的风格，我只希望文本背后的背景在按下时看起来像整个矩形按钮 
 
 我哪里错了？ 

In KitKat, I have a styled options menu in a supported library toolbar defined as following
 
    <android.support.v7.widget.Toolbar
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:background="?attr/colorPrimary"
    app:theme="@style/ToolbarText"
    app:popupTheme="@style/optionMenu" 
    />
 
where the optionMenu style is
 
<style name="optionMenu">
    <item name="android:textColor">@color/menu_text</item>  
    <item name="android:background">@color/menu_background</item>

</style>
 
It works as expected, but when i press a MenuItems, it doesn't take the "default grey" color in all available space, but only on the edges around the menu element whose background remains colored as defined in the style. My goal is not to change the style onpressed event, i wish only that the background behind the text looks like the whole rectangular button when pressed
 
Where am I wrong?

原文：https://stackoverflow.com/questions/26990251