FLEX初始化事件执行顺序

<?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="600"
			   minHeight="300"
			   preinitialize="trace('app_preinitialize');"
			   initialize="trace('app_initialize');"
			   creationComplete="trace('app_creationComplete');"
			   applicationComplete="trace('app_applicationComplete');">
	<s:Panel id="parentPanel"
			 x="0"
			 y="0"
			 width="100%"
			 height="100%"
			 dropShadowVisible="false"
			 preinitialize="trace('parent_preinitialize');"
			 initialize="trace('parent_initialize');"
			 creationComplete="trace('parent_creationComplete');">
		<s:Button id="childButton"
				  x="10"
				  y="10"
				  label="Button"
				  preinitialize="trace('child_preinitialize');"
				  initialize="trace('child_initialize');"
				  creationComplete="trace('child_creationComplete');"/>
	</s:Panel>
</s:Application>

◇测试输出结果：

• app_preinitialize
• parent_preinitialize
• child_preinitialize
• child_initialize
• parent_initialize
• app_initialize
• child_creationComplete
• parent_creationComplete
• app_creationComplete
• app_applicationComplete

◇测试总结：

• 先派发preinitialize事件（应用 -> 父容器 -> 子组件）
• 再派发initialize事件（子组件 -> 父容器 -> 应用）
• 接着派发creationComplete事件（子组件 -> 父容器 -> 应用）
• 最后派发applicationComplete事件