flex application/group addChild失败

application是skinnablecontainer组件。

在skinnablecontainer和group中均重写了addChild方法

/**
     *  @private
     */
    override public function addChild(child:DisplayObject):DisplayObject
    {
        throw(new Error(resourceManager.getString("components","addChildError")));
    }

只要调用addChild就会抛出异常。而sprite无法直接加mxml中。

解决方法：

第一种：

通过UICOMPONENT组件

<?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"
			    creationComplete="application1_creationCompleteHandler(event)">
	<fx:Script>
		<![CDATA[
			import mx.events.FlexEvent;
			
			protected function application1_creationCompleteHandler(event:FlexEvent):void
			{
				ddd.addChild(new Sprite);
			}
		]]>
	</fx:Script>
	<fx:Declarations>
		<!-- 将非可视元素（例如服务、值对象）放在此处 -->
	</fx:Declarations>
	<mx:UIComponent id="ddd" />
</s:Application>

直接添加到stage中

<?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"
			    addToStage="application1_creationCompleteHandler(event)">
	<fx:Script>
		<![CDATA[
			import mx.events.FlexEvent;
			
			protected function application1_creationCompleteHandler(event:FlexEvent):void
			{
				stage.addChild(new Sprite);
			}
		]]>
	</fx:Script>
	<fx:Declarations>
		<!-- 将非可视元素（例如服务、值对象）放在此处 -->
	</fx:Declarations>
</s:Application>