RealTimeArrayCollection---flex实时获取数据并以LInechart的形式显示

<?xml version="1.0"?>
<!-- charts/RealTimeArrayCollection.mxml -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" initialize=
"initTimer()">
<mx:Script><![CDATA[
import flash.utils.Timer;
import flash.events.TimerEvent;
import mx.collections.ArrayCollection;
[Bindable]
public var memoryUsage:ArrayCollection = new ArrayCollection();
public function initTimer():void {
// The first parameter in the Timer constructor
// is the interval, in milliseconds.
// The second parameter is how many times to run (0 is
// infinity).
var myTimer:Timer = new Timer(1000, 0);
// Add the listener for the timer event.
myTimer.addEventListener("timer", timerHandler);
myTimer.start();
}
public function timerHandler(event:TimerEvent):void {
var o:Object = new Object();
// Get the number of milliseconds since Flash Player started.
o.time = getTimer();
// Get the total memory Flash Player is using.
o.memory = flash.system.System.totalMemory;
trace(o.time + ":" + o.memory);
// Add new object to the ArrayCollection, which is bound
// to the chart's data provider.
memoryUsage.addItem(o);
}
]]></mx:Script>
<mx:LineChart id="chart" dataProvider="{memoryUsage}"
showDataTips="true">
<mx:horizontalAxis>
Defining chart data 1607
<mx:LinearAxis/>
</mx:horizontalAxis>
<mx:verticalAxis>
<mx:LinearAxis minimum="5000000"/>
</mx:verticalAxis>
<mx:series>
<mx:LineSeries yField="memory"/>
</mx:series>
</mx:LineChart>
</mx:Application>