mainmenu.xml

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

    <item
        android:id="@+id/settings"
        android:icon="@drawable/settings"
        android:showAsAction="always"
        android:title="Settings"/>

    <item
        android:id="@+id/contacts"
        android:icon="@drawable/contacts"
        android:showAsAction="always"
        android:title="Contacts"/>


</menu>