[flexcoders] Part 2: Issues with State and Component creation (Flex 2.0 Alpha)

Thu, 08 Dec 2005 05:34:08 -0800

Here is some code which illustrates the issue:

 

1. The Component (File SystemMessage.mxml):

 

<?xml version="1.0" encoding="utf-8"?>

<mx:Canvas xmlns:mx="http://www.macromedia.com/2005/mxml" xmlns="*">

      <mx:Label id="TheMessage"/>

</mx:Canvas>

 

 

2. The main application (File StatePlayground.mxml):

 

<?xml version="1.0" encoding="utf-8"?>

<mx:Application xmlns:mx="http://www.macromedia.com/2005/mxml" xmlns:local="*">

      <mx:Script>

            <![CDATA[

                  private function addLabel():Void

                  {

                        currentState="LabelAdded";

                        TheSystemMessage.TheMessage.text = "I have been added";

                  }

                  private function removeLabel():Void

                  {

                        currentState="";

                  }                

            ]]>

      </mx:Script>

      <mx:Canvas width="100%" height="100%">

            <mx:VBox>

                  <mx:Button label="Add label" click="addLabel()"/>

                  <mx:Button label="Remove label" click="removeLabel()"/>          

            </mx:VBox>             

      </mx:Canvas>

      <mx:states>

            <mx:State name="LabelAdded">

                  <mx:AddChild position="firstChild">

                        <local:SystemMessage id="TheSystemMessage"/>

                  </mx:AddChild>               

            </mx:State>

      </mx:states>

</mx:Application>

 

 

è Issue: First click on “Add label” Buttonf fails with Erorr #1009: Null has no properties. If you dismiss the error subsequent clicks work.

 

Ralf

 



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