AS3>未定义的属性装载机的访问

Question

我想我已经人到显示此图像。然而我​​得到这个错误需要进口：

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. 

我的动作脚本是一类名为play.as内

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code'd已经足够了：

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); 
     } 
    } 
}