Calling a function from an external AS file

Question

I create a AS file that contains my DAO functions. I imported
the class into my application, but what do I have to do to call one
of its functions?
In my ProjectDAO.as I have updateProject(projectID:Number),
in my mxml I have a button that calls that function but I get a
'function cannot be found' error.
What am I missing?

Answer 1

In your first post you said you wanted to call
updateProject(projectID:Number).
In your latest post you have this:
<mx:Button label="New Project"
click="PDAO.addNewProject(event)" />
I think it should be this
<mx:Button label="New Project"
click="addNewProject(event)" />
Where addNewProject is not in class ProjectDAO, but is the
click handler function in the mxml file.
Then within that addNewProject click handler you call
PDAO.updateProject(projectID).
If in fact addNewProject is another method in class
ProjectDAO, and is an instance method, then create a click handler
like myClickHandler(event) and do this:
<mx:Button label="New Project"
click="myClickHandler(event)" />
and here is the handler function:
private function myClickHandler(e:MouseEvent):void{
PDAO.addNewProject(projectID);
If instead addNewProject is a class method, call it like
this:
private function myClickHandler(e:MouseEvent):void{
ProjectDAO.addNewProject(projectID);
Your actual click handler function may differ, but these are
some hints. If none of this makes sense, start by reading FB3 help
topic Flex Programming Elements and all its sub-topics, compiling
all the sample apps, otherwise you will find it difficult to
proceed with Flex.