Problem about importing class

[dam85]

Hello,
i have this code.

<!-- NameProject.mxml -->
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
xmlns:my="components.*" width="100%" height="100%">

<mx:Script>
<![CDATA[
import lib.User;
public var u:User = new User();

trace(u.say("hello world"));
]]>
</mx:Script>
</mx:Application>


<!-- /lib/User.as -->
package lib{
public class User{
public function say(s:String):String{
return s;
}
}
}


i get this error:

1120 Access of undefined property

Why??

thanks so much

[peterent]

You have this statement: trace(u.say("hello world")); but it isn't not inside
any function. That may be the problem. I don't know off the top of my head if
the error you are getting is a compile-time or runtime error. Which is it?

[dam85]

[q]Originally posted by: peterent
You have this statement: trace(u.say("hello world")); but it isn't not inside
any function. That may be the problem. I don't know off the top of my head if
the error you are getting is a compile-time or runtime error. Which is it?[/q]

i see this error when i do a 'clear' on my adobe flex builder


1120 Access of undefined property u.

[dam85]

i wrote the same rows read from adobe flex online manual. :(

[peterent]

You have this Script block in your code:
<mx:Script>
<![CDATA[
import lib.User;
public var u:User = new User();

trace(u.say("hello world"));
]]>
</mx:Script>

The trace statement is just "floating" in there - it must be in a function.
When do you want this trace executed? For example, if you want to display it
when the Application dispatches its creationComplete event, then add a
creationComplete event handler to the Application tag and then write the
function to handle the event in the Script block:

<mx:Application ... creationComplete="iniApp()">

<mx:Script>
<![CDATA[
import lib.User;
public var u:User = new User();

private function initApp() : void {
trace(u.say("hello world"));
}
]]>
</mx:Script>

Now the trace statement appears in a function so you will not get the error.

[dam85]

yes, very good! now works!!!

thanks so much.....the last question...

but if i create an instance of a class in my main.mxml

example:
public var s:User = new User();

i can write a function, like this

public function getMyObj():User{
return s;
}

i think this code should works, but how can i call this function (getMyObj())
in other .mxml files?

i hate to use the same class instance for every mxml file

how could i do?

thanks again

[dam85]

....i have to use.... NOT i "HATE" :)

[peterent]

From any class in your application you can do this:

import NameProject;

var app:NameProject = Application.application as NameProject;
var u:User = app.getMyObj();

[dam85]

perfect!!! thanks