KTC/app/src/main/res/menu/bottom_nav_menu.xml

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

    <item
        android:id="@+id/navigation_home"
        android:icon="@drawable/newspaper"
        android:title="@string/title_home" />

    <item
        android:id="@+id/navigation_timetable"
        android:icon="@drawable/schedule"
        android:title="@string/title_timetable" />

    <item
        android:id="@+id/navigation_gallery"
        android:icon="@drawable/attach"
        android:title="@string/title_gallery" />
</menu>