I am making a program where people can create their own food schedule. I also want to calculate the total amount of calories per food schedule.
So first off people can add items to a list which are saved in an arraycollection:
<s:List includeIn="State2" x="12" y="533" width="428" height="157" dataProvider="{acKoop}"
enabled="true" change="totalcal(event)">
<s:itemRenderer>
<fx:Component>
<mx:Label text="{data.Type} {data.Kcal}" />
</fx:Component>
</s:itemRenderer>
</s:List>
I want a function that retrieves all the values of data.Kcal and then makes a Sum of it.
public function totalcal(event:Event):void{
var price:Number=acKoop[event.columnIndex].Kcal;
total += price;
}
Here the code of link I was send, maybe will be useful:
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" creationComplete="init()">
<fx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
import mx.controls.Alert;
[Bindable]
private var acKoop:ArrayCollection = null;
public function init():void{
var arr:ArrayCollection = new ArrayCollection();
var obj:Object = new Object();
obj.Type = "TYPE1";
obj.Kcal = 10;
arr.addItem(obj);
obj = new Object();
obj.Type = "TYPE2";
obj.Kcal = 50;
arr.addItem(obj);
acKoop = arr;
}
public function totalcal(event:Event):void{
var i:Number = 0;
for each(var obj:Object in ArrayCollection(List(event.currentTarget).dataProvider)){
i = i + obj.Kcal;
}
Alert.show("Total of Kcal = " + i.toString());
}
]]>
</fx:Script>
<s:List dataProvider="{acKoop}"
enabled="true" change="totalcal(event)">
<s:itemRenderer>
<fx:Component>
<mx:Label text="{data.Type} {data.Kcal}" />
</fx:Component>
</s:itemRenderer>
</s:List>
</s:Application>
Basically, on the change event I take the dataprovider information from the event, and calculate the TOTAL with the for each loop. I hope this will be useful.