每当我单击菜单时，事件监听来自uiloader和文本字段。我想删除事件监听程序

Question

package com
{


    public class gallery_folio extends MovieClip
    {
        var image_xml:XML;
        var xml_loader:URLLoader;
        public var text_style:TextFormat = new TextFormat("Verdana",10,0x333333,"",null,null,null,null,"left");
        public var _style:TextFormat = new TextFormat("Verdana",11,0x333333,"",null,null,null,null,"left");

        public function gallery_folio()
        {
            xml_loader = new URLLoader(new URLRequest("xml/gallery_folio.xml"));
            xml_loader.addEventListener(Event.COMPLETE,xml_loaded);
        }
        public function xml_loaded(e:Event):void
        {
            image_xml = new XML(e.target.data);
            var menu_mc:MovieClip;
            var menu_uldr:UILoader;
            var label_:TextField;
            for (var i=0; i<image_xml.children().length(); i++)
            {
                menu_mc=new MovieClip();
                menu_mc.graphics.beginFill(0xffffff,1);
                menu_mc.graphics.lineStyle(0.25,0xcccccc);
                menu_mc.graphics.drawRect(0,0,100,70);
                menu_mc.graphics.endFill();
                addChild(menu_mc);
                menu_uldr=new UILoader();
                menu_uldr.source = image_xml.children()[i]. @ img;
                menu_uldr.width = 100;
                menu_uldr.height = 70;

                menu_mc.addChild(menu_uldr);
                menu_mc.y = stage.stageHeight / 15;
                menu_mc.x = 10 + 120 * i;
                menu_mc.buttonMode = true;
                menu_mc.name = image_xml.children()[i]. @ name;
                menu_mc.addEventListener(MouseEvent.CLICK,onclick_menu);

                label_=new TextField();
                label_.text = image_xml.children()[i]. @ name;
                menu_mc.addChild(label_);
                label_.selectable = false;
                label_.setTextFormat(text_style);


            }

        }
        public function onclick_menu(e:MouseEvent):void
        {
            trace(e.target.name);
        }

    }

}

输出基于结构化数据的xml。

    <item img="img/img_1.jpg" name="websites">


        <subitem name="m1">
        <image></image>
        <link>http://dasmenonphotography.com</link>
        <description></description>
        </subitem>

        <subitem name="-n-">
        <image></image>
        <link>http://auctussolutions.com</link>
        <description></description>
        </subitem>
    </item>

    <item img="img/img_2.jpg" name="paintings">


        <subitem name="-n-">
        <image></image>
        <link>http://dasmenonphotography.com</link>
        <description></description>
        </subitem>

        <subitem name="-n-">
        <image></image>
        <link>http://auctussolutions.com</link>
        <description></description>
        </subitem>

    </item>

    <item img="img/img_3.jpg" name="paintings">


        <subitem name="-n-">
        <image></image>
        <link>http://dasmenonphotography.com</link>
        <description></description>
        </subitem>

        <subitem name="-n-">
        <image></image>
        <link>http://auctussolutions.com</link>
        <description></description>
        </subitem>

    </item>
</showcase>

每当我单击menu .the event listen from uiloader和text字段时，我想从above.Actually中删除事件侦听程序，我想创建xml图库.with大量图像

Answer 1

您所要求的是能够：

1. 通过添加事件侦听器侦听在实例上调度的事件，而
2. 则从单击的目标

中删除该事件侦听器

您可以通过使用"currentTarget“获得对被单击目标的引用，它引用了被单击的实例(而不是被单击的特定元素，即" target ")。

您可以通过调用the "removeEventListener" method来删除eventlistener，该方法将事件类型和要删除的事件方法作为参数。

对于您的情况，以下是解决问题的方法：

   public function onclick_menu(e:MouseEvent):void
   {
        e.currentTarget.removeEventListener(MouseEvent.CLICK, onclick_menu);
   }