<?xml version="1.0" encoding="utf-8"?>

<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"

               xmlns:s="library://ns.adobe.com/flex/spark"

               xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600">

    <fx:Declarations>

        <!-- 将非可视元素（例如服务、值对象）放在此处 -->

    </fx:Declarations>

    <s:ButtonBar id="btnBar" horizontalCenter="0" verticalCenter="0">

        <s:layout>

            <s:VerticalLayout gap="-1" />

        </s:layout>

        <s:dataProvider>

            <s:ArrayList source="[Red,Orange,Yellow,Green,Blue]" />

        </s:dataProvider>

    </s:ButtonBar>

</s:Application>