Question

Given a flex application or module, you can specify a custom xml namespace as follows:

<mx:Module xmlns:mx='http://www.adobe.com/2006/mxml' xmlns:custom='custom.namespace.*'> 

We can then refer to mxml components in the directory custom/namespace/ using the custom tag. For example, if I have the components Custom1 and Custom2 in the custom/namespace directory, I can refer to them like so:

<custom:Custom1/> <custom:Custom2/> 

Is there a way to map multiple directories onto the same tag? That is, if I have components in a subdirectory of custom/namespace, like custom/namespace/sub with component SubCustom1, is there a way to modify the flex document so the custom tag can refer to SubCustom1?

Note that one workaround I found was to add a new tag for each directory (e.g. xmlns:custom.sub=’custom.namespace.sub.*’, and then:

<custom.sub:SubCustom1> 

This solution seems like a kludge, though.

Answer 1

To create a custom namespace in flex you need to

1) Create a custom manifest file: e.g.

<?xml version='1.0' encoding='utf-8' ?> <componentPackage>      <component id='Accordion' class='mx.containers.Accordion'/>     .... 

2) Add something similar to the following to your flex-compiler.xml file:

<compiler>     ...       <namespaces>          <!-- Specify a URI to associate with a manifest of components for use as MXML -->          <!-- elements.                                                                -->          <namespace>             <uri>http://mycustomnamespace.com</uri>             <manifest>custom-manifest.xml</manifest>          </namespace>       </namespaces> </compiler> 

You can read a more detailed explanation here.

This question was also answered here.