AS3：如何访问儿童的孩子？ [英] AS3: How to access children of children of children?

问题描述

有没有更好的（更快，更短或整洁）的方式来访问3层或更深的儿童精灵（对象）？如果孩子们都被给了名字，而且你知道名字。有没有更好的办法做到这一点比我下面的代码？

var mySprite：DisplayObjectContainer = layerASprite.getChildByName（ layerA ）作为DisplayObjectContainer;

mySprite = mySprite.getChildByName（ layerB ）作为DisplayObjectContainer;

mySprite.getChildByName（ layerC ）。y = 200;

解决方案

是独一无二的，你可以创建一个静态类变量/方法的形式全球注册表：

 包
 { 
 public class Registry 
 {
 static private var hash：Object = new Object; 
 
 static public function register（name：String，target：DisplayObject）：void 
 {
 hash [name] = target; 
 
 
 static public function access（name：String）：DisplayObject 
 {
 return hash [name]; 
 
 
 
 
 
 $ b用法：
  //任何MovieClip，第1帧或类构造函数。 
导入注册表; 
 
 Registry.register（deepChild，this）; 
 
 //从任何其他地方。 
导入注册表; 
 
 Registry.access（deepChild）。y = 200; 
  
或者，您可以使用一种方法，通过单个字符串参数来挖掘子元素的子元素：
 
 
 $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ ）; 
 var result：DisplayObject = this; 
 
 while（aSplit.length）
 {
 var aParent：DisplayObjectContainer = result作为DisplayObjectContainer; 
 
 if（！aParent）return null; 
 
 result = aParent.getChildByName（aSplit.shift（））; 
} 
 
返回结果; 
 
 $ / code $ / pre 
 
 
用法：
 
 
  offSpring（layerA.layerB.layerC）。y = 200; 
  
 
Is there a better (quicker, shorter or neater) way to access a child sprite (object) 3 layers or more deep? If the children have all been given names and you know the names. Is there a better way to do it than the code I made below?

var mySprite:DisplayObjectContainer = layerASprite.getChildByName("layerA") as DisplayObjectContainer;

mySprite = mySprite.getChildByName("layerB") as DisplayObjectContainer;

mySprite.getChildByName("layerC").y = 200;
解决方案
If they are unique you can create a "global" registry in a form of static class variables/methods:
package
{
    public class Registry
    {
        static private var hash:Object = new Object;

        static public function register(name:String, target:DisplayObject):void
        {
            hash[name] = target;
        }

        static public function access(name:String):DisplayObject
        {
            return hash[name];
        }
    }
}
Usage:
// Any MovieClip, frame 1 or class constructor.
import Registry;

Registry.register("deepChild", this);

// From any other place.
import Registry;

Registry.access("deepChild").y = 200;
Alternately you can use a method that digs children of children by a single string argument:
function offSpring(path:String):DisplayObject
{
    var aSplit:Array = path.split(".");
    var result:DisplayObject = this;

    while (aSplit.length)
    {
        var aParent:DisplayObjectContainer = result as DisplayObjectContainer;

        if (!aParent) return null;

        result = aParent.getChildByName(aSplit.shift());
    }

    return result;
}
Usage:
offSpring("layerA.layerB.layerC").y = 200;


                        
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