flash和flex相互调用

问了好多人，都不告诉我。是我想复杂了。

flex代码

<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" 
         xmlns:local="*" creationComplete="init()">
        
        
        <mx:Script>
                <![CDATA[
                        import mx.controls.Alert;
                        private function init():void{
                                var obj:Object=swf.content;
                                obj.yuanjian.addEventListener("click",click);
                                obj.flexCallFlash();
                        }
                        private function click(event:Event){
                                mx.controls.Alert.show("click");
                        }
                        public function flashCallFlex():void{
                                mx.controls.Alert.show("flash Call Flex");
                        }
                ]]>
        </mx:Script>
        <mx:SWFLoader source="image1.swf" id="swf">
                
        </mx:SWFLoader>
        
</mx:WindowedApplication>

 flash代码

yuanjian.addEventListener("hello",hello);
yuanjian.dispatchEvent(new Event("hello"));
yuanjian.addEventListener("click",onclick);
this.dispatchEvent(new Event("click"));

trace("hello");

function hello(event:Event){
        trace("event");
}
function onclick(event:Event){
        trace("click");
        
}
function flexCallFlash(){
        trace("flex调用了");
        Object(this.parent.parent.parent).flashCallFlex();
}