wulkanowy-mirror/app/src/main/res/menu/action_menu_grade.xml

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context="io.github.wulkanowy.timetable.MainActivity">

    <item
        android:id="@+id/action_semester_switch"
        android:icon="@drawable/ic_menu_grade_semester_24dp"
        android:orderInCategory="2"
        android:title="@string/grade_switch_semester"
        app:showAsAction="ifRoom" />

    <item
        android:id="@+id/action_summary_switch"
        android:icon="@drawable/ic_menu_grade_summary_24dp"
        android:orderInCategory="1"
        android:title="@string/grade_menu_summary"
        app:showAsAction="ifRoom" />
</menu>