Created a .MXML component called MyIconRenderer.mxml
<!--?xml version="1.0" encoding="utf-8"?-->
<s:IconItemRenderer
xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
iconField="icon"
labelField="name"
messageField="category"
iconWidth="45"
iconHeight="45"
/>
Then Implement the code within the Array List by calling the Item Rendered "MyIconRenderer" as follow:
itemRenderer="MyIconRenderer"
Then pass the icon property to your selected Lists' Array Collection.