sheishuoAPP/app/res/menu/message_activity_more_menu.xml

<?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:id="@+id/message_activity_menu_action"
        android:icon="@drawable/action_bar_black_more_icon"
        android:title=""
        app:showAsAction="always"/>

</menu>