Android去除导航菜单项突出显示

Question

当您单击我的抽屉导航中的菜单项时，它会稍微变暗并保持这种状态，直到单击另一个项目为止。无论它处于什么状态，我都试图让它保持相同的颜色。

它是某种叠加层吗？我想我已经在 drawer_items.xml 中涵盖了所有可能的状态。
如何防止这种行为？

activity_main.xml

<android.support.design.widget.NavigationView
  .
  .
  android:background="@drawable/drawer_items"
  .
  app:menu="@menu/activity_main_drawer" />

drawer_items.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:drawable="@color/grey" android:state_activated="true" />
  <item android:drawable="@color/grey" android:state_selected="true" />
  <item android:drawable="@color/grey" android:state_focused="true"  />
  <item android:drawable="@color/grey" android:state_pressed="true" />
  <item android:drawable="@color/grey" android:state_checked="true" />
  <item android:drawable="@color/grey" />
</selector>

activity_main_drawer.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">

    <group android:checkableBehavior="single"
           android:id="@+id/arbitrary_id_1">
      <item
        android:id="@+id/nav_refresh"
        android:icon="@drawable/ic_refresh_24dp"
        android:title="Try Again/Refresh" />
    </group>

    <group android:checkableBehavior="single"
           android:id="@+id/arbitrary_id_2">
      <item
        android:id="@+id/nav_back"
        android:icon="@drawable/ic_fast_rewind_24dp"
        android:title="Go Back" />
    </group>

    <group android:checkableBehavior="single"
           android:id="@+id/arbitrary_id_3">
      <item
        android:id="@+id/nav_3" />
    </group>

</menu>

Answer 1

也许你可以用这样的东西，
为了防止项目在点击时改变颜色，你可以尝试在 activity_main_drawer.xml 中改变:

<group android:checkableBehavior="single">

到

<group android:checkableBehavior="none">

或者你可以这样做:

<group android:checkableBehavior="single">
    ...
    <item
        android:id="@+id/item_one"
        android:icon="@drawable/ic_item_one"
        android:title="Item One"/>
    ...
  </group>

收件人:

<item>
    <menu>
      ...
      <item
        android:id="@+id/item_one"
        android:icon="@drawable/ic_item_one"
        android:title="Item One"/>
      ...
    </menu>
  </item> 

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