<mx:State name=”appStateLoggedIn”>

<mx:State name=”{SessionModel.APP_STATE_LOGGED_IN}”>

I think it should be referring to the constants

However this means you would have to import the SessionModel class in the view – does it not make more sense just to set the view state constants in the ModelLocator?

I ask because I recently did a post on the subject, comparing Cairngorm and PureMVC to see how they apply patterns in the View-part of MVC.

What is your opinion on the subject?

This is hard to quantify and very much depends on your app. If you app is very simple i.e. a flex powered widget that displays content, or even some slightly more complex apps such as a project browser that simply displays information and makes very basic calls to get data to display would probably more candidates for Easy MVC. Cairngorm requires a fair bit of up front investment creating all these classes etc which pays off once you have at least 5 or more commands. But this is my opinion and really you need to think about how big the app could grow in the future. I hope that helps.

How are you binding to the item in the array collection? Flex will not update the binding if you bind to an arraycollection element using the following:

<mx:Label text="{array[1]}" />

you need to use the getItemAt method, i.e.

<mx:Label text="{array.getItemAt(1)}"/>

Also make sure you remember to make the arraycollection bindable.

i.e.

[Bindable]
var array : ArrayCollection;