Add and remove event handlers : Event Handler « Event « Flex






Add and remove event handlers

Add and remove event handlers
           

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<!-- optimize/RemoveSomeListeners.mxml -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
    xmlns:mx="library://ns.adobe.com/flex/mx" xmlns:s="library://ns.adobe.com/flex/spark"
    creationComplete="initApp(event)">
    <s:layout>
        <s:VerticalLayout />
    </s:layout>
    <fx:Script> 
        private function initApp(e:Event):void { 
            b2.addEventListener("click",myClickHandler); 
            b3.addEventListener("click",myClickHandler); 
        } 
        private function destroyButtons(e:Event):void { 
            b2.removeEventListener("click",myClickHandler); 
            b3.removeEventListener("click",myClickHandler); 
            myVGroup.removeAllElements(); 
        } 
        private function myClickHandler(e:Event):void { 
            // Do something here. 
        } 
      </fx:Script>
    <s:Panel title="VGroup with child controls">
        <s:VGroup id="myVGroup" height="100" width="125">
            <s:Button id="b1" label="Hurley" click="myClickHandler(event)" />
            <s:Button id="b2" label="Jack" />
            <s:Button id="b3" label="Sawyer" />
        </s:VGroup>
    </s:Panel>
    <s:Button id="myButton" click="destroyButtons(event)" label="Destroy Buttons" />
</s:Application>

   
    
    
    
    
    
    
    
    
    
    
  








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