我有一个充满定制对象的ArrayCollection。我需要能够创建这个阵列的副本，执行一些功能和修改阵列和里面的对象。然后，我需要基本上将其重置为开始之前的原始存储副本。

问题(也是我发现并正在尝试修复的错误)是，我似乎无法创建不直接引用原始数组的该数组的副本。即：对副本进行修改也会修改原始副本。

private var original:ArrayCollection = new ArrayCollection();
...

private function doStuff()
{
    var modified:ArrayCollection = original;
    for each (var myObj:CustomObject in modified)
        ...
}

我所能得到的最接近的方法是使用ObjectUtil.Clone...

private var original:ArrayCollection = new ArrayCollection();
...

private function doStuff()
{
    var modified:ArrayCollection = ObjectUtil.clone(original);
    for each (var myObj:CustomObject in modified)
    {
        //Error here as the clone worked, however the objects in the array reverted to the base Object Class and couldn't be cast back to their actual CustomObject type
    }
}

下面是一个实用的示例：

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
               xmlns:s="library://ns.adobe.com/flex/spark" 
               xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600"
               creationComplete="application1_creationCompleteHandler(event)">
    <fx:Script>
        <![CDATA[
            import mx.collections.ArrayCollection;
            import mx.events.FlexEvent;

            private var originals:ArrayCollection;
            protected function application1_creationCompleteHandler(event:FlexEvent):void
            {
                originals = new ArrayCollection();
                for (var i:int = 0; i <= 5; i++)
                {
                    var myObj:CustomObject = new CustomObject();
                    originals.addItem(myObj);
                }
                doStuff();
            }

            private function doStuff():void
            {
                var modified:ArrayCollection = clone(originals);
                for (var i:int = 0; i < modified.length; i++)
                {
                    var myDupObj:CustomObject = modified[i] as CustomObject;
                    //do stuff
                    trace(myDupObj);
                }
            }

            private function clone(source:Object):*
            {
                var myBA:ByteArray = new ByteArray();
                myBA.writeObject(source);
                myBA.position = 0;
                return(myBA.readObject());
            }

        ]]>
    </fx:Script>
    <fx:Declarations>
        <!-- Place non-visual elements (e.g., services, value objects) here -->
    </fx:Declarations>
</s:Application>

和CustomObt.as

package
{
    public class CustomObject
    {
        public var a:String;
        public var b:String;
        public var c:String;

        public function CustomObject()
        {
            a = "Hello";
            b = "World";
            c = "Good-Bye";
        }
    }
}