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£¨1£©Event Listeners
                Listening to parent objects does cause memory leaks
                e.g.
                    override protected function mouseDownHandler(…):void {
                     systemManager.addEventListener(“mouseUp”, mouseUpHandler);
              you can:
                1.Removing the addEventListener (when dispose).
                  systemManager.removeEventListener(“mouseUp”, mouseUpHandler);
                2. Use of weak reference listeners
                  override protected function mouseDownHandler(…):void {
                  systemManager.addEventListener(“mouseUp”, mouseUpHandler, false, 0, true);
              These do not block garbage collection(generally do not cause memory leaks):
Weak References
Self References
References to Child Objects
                    weak reference event listener  e.g.
                &nb


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import flash.events.Event;
import flash.net.URLLoader;
import flash.net.URLRequest;
private var loader:URLLoader = new URLLoader();
private var request:URLRequest = new URLRequest("a.txt");
       
private function initComplete():void
   {
   ......

Flex 4 : ʹÓà AreaChart ¿Ø¼þ

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´´½¨ AreaChart ¿Ø¼þµÄÀý×ÓÈçÏ£º
<?xml version="1.0"
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Flex 4 : Chart ¿Ø¼þ


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flex ÓйصĴ¦ÀíÊý¾Ý

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FlexʹÓÃLoaderºÍURLRequest¼ÓÔØ±¾µØÍ¼Æ¬Ê¾Àý£º
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="absolute">
<mx:Script>
<![CDATA[
import mx.core.UIComponent;
import mx.controls.Alert;
import flash.display.*;
i ......
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