Question

I just created a Flex Mobile project and I received this error when using an mx:LinkButton:

Could not resolve <mx:LinkButton> to a component implementation.

Here is my Application:

<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
               xmlns:mx="library://ns.adobe.com/flex/mx" 
               xmlns:s="library://ns.adobe.com/flex/spark">


    <mx:LinkButton id="contactButton" label="Contact" />

Actually, none of the mx components are working? This is not good.

I’m using Flex 4.5.1A.

Answer 1

It looks like you have to manually add the mx.swc to the project (even though some mx components are included by default in Flex 4.5+).

Anyway, open your project properties window and go to the build path view. Click Add SWC and browse to:

[Flex Framework directory]\frameworks\libs\mx\mx.swc

However, you may still get 100’s of these errors:

Definition mx.skins.spark:AccordionHeaderSkin could not be found.

In which case you need to add the source to the skins as described here. Click Add Source and browse to:

\frameworks\projects\mx\src

You may also need to add additional skins. Click Add Source and browse to:

/frameworks/projects/sparkskins/src