app/src/main/res/values/arrays.xml

<resources>
	<!-- Reply Preference -->
	<string-array name="reply_entries">
		<item>Reply</item>
		<item>Reply to all</item>
	</string-array>

	<string-array name="reply_values">
		<item>reply</item>
		<item>reply_all</item>
	</string-array>
</resources>