The previous part of this series handled in setting up Flashdevelop to build Flash Projects and can be found here. Now to get Flashdevelop working with Flex projects is almost the same so if you haven’t read part 1 yet, you should do that first.

You will need:
1. Flashdevelop:

You can download the newest release here. But unfortunately it’s currently only available for Windows users. There is a tutorial here to get it running on a mac thru parallels. In this tutorial I’m using Flashdevelop 3.0.6 RTM

2. Flex SDK
I used 3.5 for this tutorial, download here.

3. Flash player 10 projector content debugger
Download here. (After you download it , just run it once and close it again , that’s basically all you need to do with it)

Just extract the Flex SDK in a location you want for it. Please note that to compile a project in FlashDevelop

After you installed FlashDevelop and opened it you can create a new project and choose to create a new Flex 3 Project , choose a name and a location to save it and press ok.

Now you get a basic Flex project with Main.mxml as the only source file.

In order for you to compile this you need to let FlashDevelop know where to find the Flex SDK.
In Flashdevelop go to Tools -> Program Settings. Choose the AS3 Context and change Flex SDK Location to the path where you put your Flex SDK.

And that is Basically it. You should be able to compile your project just fine.

Please note:
Using Flashdevelop to create Flex 4 projects can’t be done right now (with FlashDevelop build 3.0.6).

This is because Flex4 updates it’s namespaces. In a default Flex 3 application your basic mxml looks like this:

<?xml version="1.0" encoding="utf-8"?>
<mx:Application 
	xmlns:mx="http://www.adobe.com/2006/mxml">
 
</mx:Application>

But to change it to the defaults for the Flex4 SDK it should be:

<?xml version="1.0" encoding="utf-8"?>
<s:Application 
	xmlns:fx="http://ns.adobe.com/mxml/2009"
	xmlns:s="library://ns.adobe.com/flex/spark"
	xmlns:mx="library://ns.adobe.com/flex/halo">
</s:Application>

If you try t compile this it gives an error saying that FlashDevelop “Could not resolve to a component implementation because FlashDevelop at this point doesn’t know how to handle the spark library. This most likely will be solved in a next release of FlashDevelop.

If anyone knows how to solve this problem, please post in comments