I am trying get dynamic data into my charts using
mx:HTTPService to get a JSON. I have used the flex 3 help and
combed the forums to get this far but i am now stuck.
here is my code
quote:
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
layout="absolute"
viewSourceURL="srcview/index.html"preinitialize="srv.send();" >
<mx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
import mx.rpc.events.ResultEvent;
import com.adobe.serialization.json.JSON;
import mx.controls.Alert;
import mx.utils.ObjectUtil;
[Bindable]
private var expensesAC:ArrayCollection = new
ArrayCollection( [
{ time: "1-24 19:00", cal: 2000, tva: 1500 },
{ time: "1-24 20:00", cal: 1000, tva: 200 } ]);
private function onJSONLoad(event:ResultEvent):void{
Alert.show("onJSONLoad called!");
var myData:String = String(event.result.DATA);
Alert.show("data worked");
// Alert.show(myData);
// myText.text = myData;
// var ary:Array = (JSON.decode(myData) as Array);
// var dp:ArrayCollection = new ArrayCollection(ary.data);
// linechart.dataProvider = dp;
}
private function failed():void{
Alert.show("Fail!!");
}
]]></mx:Script>
<!-- HTTP SERVICE -->
<mx:HTTPService id="srv" resultFormat="text"
showBusyCursor="true"
url="-MySever-/readings.jsp"
result="onJSONLoad(event)" fault="failed()" />
<!-- CHART STUFF BELOW -->
<mx:TextArea id="myText" y="310" width="600" height="250"
/>
<mx:Panel title="ISO Hourly Demand" height="300"
width="600" layout="horizontal" >
<mx:LineChart id="linechart" showDataTips="true"
dataProvider="{expensesAC}">
<mx:horizontalAxis>
<mx:CategoryAxis categoryField="time" />
</mx:horizontalAxis>
<mx:series>
<mx:LineSeries yField="cal" form="curve" displayName="
Calforina" />
<mx:LineSeries yField="tva" form="segment"
displayName="TVA" />
</mx:series>
</mx:LineChart>
</mx:Panel>
</mx:Application>
So when i run this i get the Alert "onJSONLoad called!" but
not the "data worked".
when i run the service in my browser with firebug i get a
response that looks like so
quote:
{
"CALIFORNIA" : {
demand : [ <list of ints> 40, 41,42,43, ect ],
baseline : [ <list of ints> 40, 41,42,43, ect ],
numReadings : [ <list of ints> 40, 41,42,43, ect ]
},
"ERCOT" : {
demand : [ <list of ints> 40, 41,42,43, ect ],
baseline : [ <list of ints> 40, 41,42,43, ect ],
numReadings : [ <list of ints> 40, 41,42,43, ect ]
}, ect...
so i seems fairly obvious that the problem lies in the "var
myData:String = String(event.result.DATA);" line. To be honest i
pretty much took this line right out of the help file so i have no
idea what is wrong with it. help?
Thanks and good day
