<menu xmlns:android="http://schemas.android.com/apk/res/android">

    <group android:checkableBehavior="single" android:id="@+id/nav_menu_primary">
        <item
            android:id="@+id/nav_search"
            android:checkable="true"
            android:icon="@drawable/ic_schedule_black_24dp"
            android:title="@string/title_search" />
        <item
            android:id="@+id/nav_fav"
            android:checkable="true"
            android:icon="@drawable/ic_favorite_border_black_24dp"
            android:title="@string/title_fav" />
    </group>

    <group android:checkableBehavior="single" android:id="@+id/nav_menu_secondary">
        <item
            android:id="@+id/nav_settings"
            android:checkable="true"
            android:icon="@drawable/ic_settings_black_24dp"
            android:title="@string/title_settings" />
        <item
            android:id="@+id/nav_about"
            android:checkable="true"
            android:icon="@drawable/ic_info_outline_black_24dp"
            android:title="@string/title_about" />
    </group>

</menu>