AS3＆gt;访问未定义的属性加载器

Question

我认为我有显示此图片所需的导入但是我收到此错误：

1120: Access of undefined property slideImage.
1120: Access of undefined property loader.
1180: Call to a possibly undefined method addChild.
1120: Access of undefined property loader.

我的动作脚本位于名为play.as

的类中

这是AS3代码：

package  {

    import flash.display.MovieClip;
    import flash.display.Bitmap;
    import flash.net.URLRequest;
    import flash.display.Loader;


    public class play extends MovieClip {
        var loader:Loader = new Loader();
        loader.load(new URLRequest("img/Layer_1.jpg"));
        addChild(loader);


        public function play() {
            // constructor code
        }
    }

}

Answer 1

这段代码就足够了：

package  {    
    import flash.display.MovieClip;
    import flash.net.URLRequest;
    import flash.display.Loader;


    public class play extends MovieClip {
        private var loader:Loader = new Loader();

        public function play() {
           loader.load(new URLRequest("img/Layer_1.jpg"));
            addChild(loader);
        }
    }
}