YouMap/lesson03/src/main/res/menu/menu_main.xml

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

    <item
        android:id="@+id/menu_publish"
        android:icon="@drawable/ic_action_add"
        android:title="发布"
        app:showAsAction="always" />
    <item
        android:id="@+id/menu_topic"
        android:icon="@drawable/ic_action_collections"
        android:title="主题"
        app:showAsAction="always" />
    <item
        android:id="@+id/menu_usercenter"
        android:icon="@drawable/ic_action_user"
        android:title="用户中心"
        app:showAsAction="always" />
    <item
        android:id="@+id/menu_settings"
        android:title="设置" />
    <item
        android:id="@+id/menu_welcome"
        android:title="新手指南" />
</menu>