Add filter to ArrayCollection

            

<mx:Application 
    xmlns:mx="http://www.adobe.com/2006/mxml" 
     
    xmlns:s="library://ns.adobe.com/flex/spark">
    
    <mx:ArrayCollection id="collection">
            <mx:Object name="A" age="25" />
            <mx:Object name="B" age="15" />
            <mx:Object name="C" age="23" />
    </mx:ArrayCollection>
    
    <mx:Script>
        
            
            private function applyFilter():void
            {
                collection.filterFunction = filterFunc;
                collection.refresh();
            }
            
            private function filterFunc(value:Object):Object 
            {
                return (Number(value.age) > 21);
            }

      
    </mx:Script>
    
    <s:DropDownList labelField="name" dataProvider="{collection}" />
    <mx:Button label="set filter" click="applyFilter();" />
    
</mx:Application>

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Add filter to ArrayCollection : ArrayCollection « Data Model « Flex

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