Hi,
try to expose the text that should be displayed in the SystemMessage component
as a public member and let the Label bind to this member, i.e.
<?xml version="1.0" encoding="utf-8"?>
<mx:Canvas xmlns:mx="http://www.macromedia.com/2005/mxml"; xmlns="*">
<mx:Script>
<![CDATA[
[Bindable]
public var message:String;
]]>
<mx:Script>
<mx:Label id="TheMessage" text="{message}"/>
</mx:Canvas>
Later you do
private function addLabel():Void
{
currentState="LabelAdded";
TheSystemMessage.message = "I have been added";
}
Dirk.
________________________________
From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of
Ralf Rottmann
Sent: Thursday, December 08, 2005 2:34 PM
To: [email protected]
Subject: [flexcoders] Part 2: Issues with State and Component creation
(Flex 2.0 Alpha)
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>
รจ 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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