从另一个函数访问类实例 - getDefinitionByName（AS3）

问题描述：

我有一个函数sceneLoader，它将使用getDefinitionByName从一个字符串实例化类Scene1的一个对象。然后我想从另一个函数访问Scene1中的函数（sceneHandler）。从另一个函数访问类实例 - getDefinitionByName（AS3）

public class Main extends MovieClip{ 

    private var sceneNumber:int = 1; 
    private var SceneRef:Class; 
    private var sceneString:String; 

    public function Main(){ 
     sceneLoader(); 
     responseHandler(); 
    } 

    private function sceneLoader():void{ 
     sceneString = "Scene" + int(sceneNumber); 
     SceneRef = getDefinitionByName(sceneString) as Class; 
     var scene = new SceneRef(); 
     addChild(scene); 
    } 
    private function responseHandler():void{ 
     scene.sceneHandler(); //Obviously this will not work 
    } 
}

类场景1

public class Scene1 extends MovieClip{ 
    public function sceneHandler():void{ 
     //Do something 
    } 
}

的问题是，场景超出范围。我不能在函数外实例化Scene1，因为我需要先调用getDefinitionByName。我也想保留稍后加载场景的功能。如何从responseHandler调用sceneHandler？

编辑：我已经试过

public class Main extends MovieClip{ 

    private var sceneNumber:int = 1; 
    private var SceneRef:Class; 
    private var sceneString:String; 

    public function Main(){ 
     sceneLoader(); 
     responseHandler(); 
    } 

    private function sceneLoader():void{ 
     addChild(getScene());//Does not work 
    } 

    private function responseHandler():void{ 
     getScene().sceneHandler(); //Works now 
    } 

    private function getScene():Object{ 
     sceneString = "Scene" + int(sceneNumber); 
     SceneRef = getDefinitionByName(sceneString) as Class; 
     var scene = new SceneRef(); 
     //addChild(getScene());//This does work but doesn't suit my need 
     return scene; 
    } 
}

现在，我不能将对象添加到舞台上。我得到的错误：

Implicit coercion of a value with static type Object to a possibly unrelated type flash.display:DisplayObject.

答

我想通了。我忘了把它当作DisplayObject。

public class Main extends MovieClip{ 

    private var sceneNumber:int = 1; 
    private var SceneRef:Class; 
    private var sceneString:String; 

    public function Main(){ 
     sceneLoader(); 
     responseHandler(); 
    } 

    private function sceneLoader():void{ 
     addChild(getScene() as DisplayObject); 
    } 

    private function responseHandler():void{ 
     getScene().sceneHandler(); 
    } 

    private function getScene():Object{ 
     sceneString = "Scene" + int(sceneNumber); 
     SceneRef = getDefinitionByName(sceneString) as Class; 
     var scene = new SceneRef(); 
     return scene; 
    } 
}

很明显：

import flash.display.DisplayObject;

从另一个函数访问类实例 - getDefinitionByName（AS3）

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