How to know the order of component rendering in Flex
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by Tam
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Published on 2010-04-14T21:09:34Z
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2010/04/14
21:13 UTC
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flex
I have a component that has a sub-component they both use a shared variable from the model. The shared variable needs to be set by the parent component before it can be used by the child component. I did like this in the parent component:
<mx:Canvas
xmlns:mx="library://ns.adobe.com/flex/mx"
...
creationComplete="group1_completeHandler(event)" >
....
protected function group1_activateHandler(event:Event):void {
model.myVariable = something;
}
....
<components:myCustomComponent>
...
<components:myCustomComponent>
...
</mx:Canvas>
But for some reason when the code inside myCustomComponent tries to use myVariable for the first time I get a "null" object error. This means I guess that the child component gets rendered before the group1_activateHandler gets called and consequently myVariable gets set.
What should I do to ensure that the parent container initializes the variable before the child component gets created?
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