<?xml version="1.0" encoding="utf-8"?> <menu xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto"> <item android:title="@string/conversation_group_options__delivery" android:id="@+id/menu_group_delivery" android:icon="?menu_split_icon" app:showAsAction="ifRoom" > <menu> <group android:id="@+id/distribution_group" android:checkableBehavior="single"> <item android:id="@+id/menu_distribution_conversation" android:title="@string/conversation_group_options__conversation" android:checked="true" /> <item android:id="@+id/menu_distribution_broadcast" android:title="@string/conversation_group_options__broadcast" /> </group> </menu> </item> </menu>