How to call methods from .mxml file from actionscript file

Question

I have a Example.as and a Test.mxml.
In this Test.mxml, I have a function which is something like:
public function doTest():void
     Alert.show("testing!");
How do I from example.as call this function doTest() from Test.mxml?
I tried declaring public var test:Test inside my Example.as but I'm still unable to call that function out.
Any idea how?

Answer 1

Hi Bryant,
You need to create an instance of the component and then attach it to the display list then only you can access the Controls with in your component other wise the controls and components are not created or initialized that's why you are thrown the null object reference error.
So you need to do somethink like below:
var myTestObj:Test = new Test();
this.addChild(myTestObj); //Adds the component to DisplayList(You need to add this line of code in order to avoid the error)
myTestObj.doTest();
If you add your component in mxml then the component will be automatically added to the display list and you dont need to add explicitly to the display list.
<comp:Test id="myTestObj" />
And now if in your actionscript you call myTestObj.doTest(); no error occurs and you can see the Alert message.
Thanks,
Bhasker