Monday, January 3, 2011

Flex Column Chart using XML as source

Column Chart in flex using XML as dataprovider for column chart

The XML format should be as shown below.

<items>
<item>
<name> Test1 </name>
<number> 1000 </number>
</item>
<item>
<name> Test1 </name>
<number> 1000 </number>
</item>
<item>
<name> Test1 </name>
<number> 1000 </number>
</item>
<item>
<name> Test1 </name>
<number> 1000 </number>
</item>
</items>

The Flex application code is shown below.
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="initApp()">
<mx:HTTPService id="dataRequest" url="" showBusyCursor="true" result="dataRequestResultHandler(event);" fault="dataRequestFaultHandler(event);" />
<mx:Script>
<![CDATA[
import mx.rpc.events.ResultEvent;
import mx.rpc.events.FaultEvent;
import mx.controls.Alert;
import mx.collections.ArrayCollection;
public function initApp():void {
var timeStampForNocache:Date = new Date() ;
var urlAgent:String = "Your XML returing URL PATH & tim=" + timeStampForNocache.toString();
dataRequest.url = urlAgent;
dataRequest.send();
}
[Bindable]
private var stats:ArrayCollection;
private function dataRequestResultHandler(event:ResultEvent):void {
stats = event.result.items.item;
}
private function dataRequestFaultHandler(event:FaultEvent):void {
Alert.show(event.fault.message);
}
]]> </mx:Script>
<mx:ColumnChart id="xmlChartBar" dataProvider="{stats}" showDataTips="true" width="500">
<mx:horizontalAxis>
<mx:CategoryAxis dataProvider="{stats}" categoryField="option"/>
</mx:horizontalAxis>
<mx:series>
<mx:ColumnSeries showDataEffect="fadeIn" xField="name" yField="number" displayName="Hits" />
</mx:series>
</mx:ColumnChart>
</mx:Application>


The result would be like the below image.

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