android - As3 从时间轴引用一个类

Question

我不明白这是怎么回事？我可以将其他类导入时间线并使用它们就好了，但是这个类给我带来了重大问题？我正在从我的服务器上解析 XML 数据，它给我的错误看起来像这样。

时间线引用及使用:

     import networkScores;

     var network:networkScores = new networkScores();
     addChild(network);

     score1Textfield.text = network.score1.toString();

类定义:

 package 
 {
          import flash.net.URLLoader;
          import flash.net.URLRequest;
          import flash.events.Event;
          import flash.display.MovieClip;

         public class networkScores extends MovieClip
         {
                 public var myXML:XML, myXMLNames:XML;
                 public var xmlLoaderScores = new URLLoader();
                 public var score1:int;

                 public function networkScores()
                 {
                     xmlLoaderScores.addEventListener(
                                Event.COMPLETE, xmlLoadedScores);
                     xmlLoaderScores.load(new URLRequest("pathtoxmlfile"));
                 }

                 public function xmlLoadedScores(e:Event):void
                 {
                      myXML = new XML(e.target.data);
                      var qName1:QName = new QName(
                            "http://www.w3.org/2005/Atom", "score1");
                      score1 = myXML.descendants(qName1)[0].toString();
                 }
            
        }

     }

我得到的错误:

Scene 1, Layer 'Actions', Frame 4, Line 149 1119: Access of possibly undefined property score1 through a reference with static type networkScores.

1067: Implicit coercion of a value of type networkScores to an unrelated type flash.display:DisplayObject.

这是选角问题吗？

我该如何解决这个问题？

Answer 1

您的时间轴不应试图引用文档类。文档类应该控制一切。有几种方法可以知道何时将对象添加到舞台并准备好处理(例如监听添加到舞台)。一旦您知道该对象已被添加并且您也知道您的 xml 已返回，您就可以在您在其文档类中公开的子对象上填充一个变量.有关更多信息，请查看此博客文章 http://www.developria.com/2010/04/combining-the-timeline-with-oo.html ，以及此处的随附代码 http://flexdiary.blogspot.com/2010/04/sample-code-for-oop-timeline-insideria.html .

编辑显示代码:

它的代码可能看起来像这样:

package {
   public class Main extends MovieClip {
      private var _stageInstance:StageInstance;
      private var _score:String;
      private var _loader:URLLoader;//hold loader in memory so it doesn't gc before it returns
      //by using a getter/setter pair, we know when Flash has added the instance to the stage
      public function get stageInstance():StageInstance{
          return _stageInstance;
      }
      public function set stageInstance(value:StageInstance):void {
         _stageInstance = value;
         if (_stageInstance != null && _score != null) {
             _stageInstance.score = _score;
         }
      }
      public function onScoreLoaded(e:Event):void {
         myXML = new XML(e.target.data);
         var qName1:QName = new QName("http://www.w3.org/2005/Atom", "score1");
         _score = myXML.descendants(qName1)[0].toString();
         if (stageInstance != null) {
            stageInstance.score = _score;
         }
      }
      public function Main() {
         _loader = new URLLoader();
         _loader.addEventListener(Event.COMPLETE, onScoreLoaded);
         _loader.load(new URLRequest('pathToXML'));
      }
   }

}

package {
   public Class StageInstance extends MovieClip {
       pubic var score1TextField:TextField;//populated by Flash Player
       private vare _score:String;
       //note how the setter here is doing something useful, not just passing through the value
       public function get score():String {
          return _score;
       }
       public function set score(value:String):void {
          _score=value;
          score1TextField.text=score;
       }
       public function StageInstance() {
          super();
       }

   }

}