1、错误描写叙述

ReferenceError: Error #1069: 在 spark.components.RadioButtonGroup 上找不到属性 label，且没有默认值。

at Chart/radiogroup_itemClickHandler()[E:\Flash Builder\Map\src\Chart.mxml:49]

	at Chart/__radiogroup_itemClick()[E:\Flash Builder\Map\src\Chart.mxml:58]

	at flash.events::EventDispatcher/dispatchEventFunction()

	at flash.events::EventDispatcher/dispatchEvent()

	at spark.components::RadioButton/buttonReleased()[E:\dev\4.0.0\frameworks\projects\spark\src\spark\components\RadioButton.as:554]

	at spark.components.supportClasses::ButtonBase/mouseEventHandler()[E:\dev\4.0.0\frameworks\projects\spark\src\spark\components\supportClasses\ButtonBase.as:1054]

2、错误原因

protected function radiogroup_itemClickHandler(event:ItemClickEvent):void

{

	if(event.currentTarget.label=="周")

	{

		Alert.show("OK!");

	}

}

<fx:Declarations>

	<s:RadioButtonGroup id="radiogroup" itemClick="radiogroup_itemClickHandler(event)"/>

</fx:Declarations>

3、解决的方法