如何将事件发送到Actionscript 3中的另一个类？

Question

我搜索过几个文档但我找不到将事件发送到另一个班级。

我试图这样做。

1. ＆＃39;主＆＃39;班级有按钮。
2. ＆＃39;主＆＃39;＆＃39;子＆＃39;课程将跟踪＆＃34;按钮被点击＆＃34;单击按钮时

我可以追溯到主要的＆＃39;带派遣事件的班级。

但是＆＃39; sub＆＃39;上课是个问题。

我怎样才能将这样的事件发送到＆＃39; sub＆＃39;类？

主类

package com
{
    import flash.events.*;
    import flash.display.MovieClip;
    import com.sub;

    public class main extends MovieClip
    {
        public static const BTN_CLICKED:String = "btn_Clicked";

        public function main():void
        {
            if (stage) init();
            else addEventListener(Event.ADDED_TO_STAGE, init);
        }

        public function init(e:Event = null):void
        {
            var flashVars:Object = {};

            removeEventListener(Event.ADDED_TO_STAGE, init);
            if(parent != null && parent.parent != null)
            {
                flashVars = parent. parent.loaderInfo.parameters;
            }
            else
            {
                flashVars = this.root.loaderInfo.parameters;
            }
            //entry point
            var subClass:sub = new sub;
            subClass.init();

            btn.addEventListener(MouseEvent.CLICK, onClick);
            addEventListener(BTN_CLICKED, onbtnClicked, false, 0, true);
        }

        public function onClick(e:MouseEvent)
        {
            dispatchEvent(new Event(BTN_CLICKED));
        }

        public function onbtnClicked(e:Event)
        {
            trace("clicked");
        }
    }
}

子类

package com
{
    import flash.events.*;
    import flash.display.MovieClip;
    import com.main;

    public class sub extends MovieClip
    {
        public function sub():void
        {
            if (stage) init();
            else addEventListener(Event.ADDED_TO_STAGE, init);

        }

        public function init(e:Event = null):void
        {
            removeEventListener(Event.ADDED_TO_STAGE, init);
            //entry point
            trace("sub class loaded");
        }
    }

}

Answer 1

您应该将var subClass:sub重新定位到main旁边的public static const BTN_CLICKED:String = "btn_Clicked";类定义的主要集合。{1}}。然后，您可以subClass.dispatchEvent(...)。

public class main extends MovieClip {
    private var subClass:sub;
    public function main() {
        ...
        subClass=new sub();
        addChild(subClass); // not just "init()", it's wrong
        ...
    }
    public function onClick(e:MouseEvent)
    {
        dispatchEvent(new Event(BTN_CLICKED));
        subClass.dispatchEvent(new Event(BTN_CLICKED));
    }
}