Well according to the docs Flex calls the IMXMLObject.initialized() method after it initializes the properties of the component. Isn't it too late for what I need? Is this the sample you are referring to:
<?xml version="1.0"?> <!-- mxmlAdvanced/myComponents/ObjectComp.mxml --> <fx:Object xmlns:fx="http://ns.adobe.com/mxml/2009"; xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" implements="mx.core.IMXMLObject"> <fx:Script> <![CDATA[ // Implement the IMXMLObject.initialized() method. public function initialized(document:Object, id:String):void { trace("initialized, x = " + x); } ]]> </fx:Script> <fx:Declarations> <fx:Number id="y"/> <fx:Number id="z"/> <fx:Number id="x"/> </fx:Declarations> </fx:Object> On Thu, Sep 26, 2013 at 10:24 PM, Alex Harui <[email protected]> wrote: > Hi Mark, > > That is a limitation of MXML. If you have an AS class that is based on > UIComponent, you are encouraged to use the lifecycle methods like > invalidateProperties/commitProperties instead of doing work off the > constructor. If you have an AS class not based on UIComponent, a common > pattern is to implement IMXMLObject and do all of the work in the > initialize method so it can be used in MXML, and then when instantiating > in AS, you will do: > > var _myClass_mxml:MyClass_mxml = new MyClass_mxml(); > _myClass.initialize(document, "_myClass"); > > -Alex > > On 9/26/13 7:14 PM, "mark goldin" <[email protected]> wrote: > > >No, that does not work because what I am instantiating is an mxml class > >that is based on MyClass: > >MyClass_mxml: > ><ns:MyClass> > >... > ></ns:MyClass> > > > >and then in AS: > >var _myClass_mxml:MyClass_mxml = new MyClass_mxml(); This will not take a > >parameter to a constructor. > > > > > >On Thu, Sep 26, 2013 at 8:55 PM, Mark Kessler > ><[email protected]>wrote: > > > >> Oh I see your using AS to create an instance of it. > >> > >> This would work for accessing that property... > >> var newMyClass:MyClass = new MyClass() > >> newMyClass.myProperty = object being passed. > >> > >> > >> But since your using AS you could pass it in the constructor now. > >> > >> public class MyClass > >> { > >> //Constructor > >> public function MyClass (myProp:Object) > >> { > >> //init stuff using whatever you passed. > >> } > >> } > >> > >> var newMyClass:MyClass = new MyClass(My prop or object or whichever > >>matches > >> your needs.) > >> > >> > >> > >> -Mark > >> > >> > >> On Thu, Sep 26, 2013 at 9:01 PM, mark goldin <[email protected]> > >> wrote: > >> > >> > That is not exactly what I have. Yes, I too have an mxml class based > >>on > >> > another AS class. But I am creating an instance of my mxml class like > >> this: > >> > var newMyClass:MyClass = new MyClass(); > >> > So, how can I pass a value for myProperty to newMyClass? My > >>understanding > >> > as soon as var newMyClass:MyClass = new MyClass(); executes all > >>children > >> on > >> > newMyClass will be created but I need to have myProperty before that. > >> > > >> > > >> > >
