Real Time ArrayCollection
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<!-- charts/RealTimeArrayCollection.mxml -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:mx="library://ns.adobe.com/flex/mx" xmlns:s="library://ns.adobe.com/flex/spark"
initialize="initTimer()" height="600">
<fx:Script>
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 or AIR started.
o.time = getTimer();
// Get the total memory Flash Player or AIR 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);
}
</fx:Script>
<s:layout>
<s:VerticalLayout />
</s:layout>
<s:Panel title="Memory Usage">
<s:layout>
<s:VerticalLayout />
</s:layout>
<mx:LineChart id="chart" dataProvider="{memoryUsage}"
showDataTips="true">
<mx:horizontalAxis>
<mx:LinearAxis />
</mx:horizontalAxis>
<mx:verticalAxis>
<mx:LinearAxis minimum="5000000" />
</mx:verticalAxis>
<mx:series>
<mx:LineSeries yField="memory" />
</mx:series>
</mx:LineChart>
</s:Panel>
</s:Application>
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