[Flex] namespace usage for flex Programming

See: http://www.k-zone.cn/zblog/post/flex-compiler-namespace-manifest.html for details

A friend in the official group of flex Step 1 asked me how to customize the namespace of my component in a way like xmlns: MX = "http://www.adobe.com/2006/mxml? Go to the compiler parameter in Adobe and find that you can use the-namespace and-include-namespaces parameters to specify your own URL.

First, we need to clarify the concept of manifest. xml.
Adobe is a kind of ActionScript 3.0 class library list. With the combination of manifest. xml and namespace, you can easily set your own namespace.


The following is a manifest. xml file:

<? XML version = "1.0"?>

<Componentpackage>

<Component id = "testinga" class = "testinga"/>

</Componentpackage>

This XML file defines a class with ID = "testinga" (Note: If this class is in the package, you should also write the package address, for example: cn.org. kenshin. testinga)


Use the following parameters:

-Namespace http://www.k-zone.cn/manifest. xml

-Namespace: declare a URI as the namespaceof http://www.k-zone.cn/, and use manifest.xmlas the current WordPress 3.0 configuration file.

-Include-namespaces http://www.k-zone.cn/

-Include-namespaces: Include the namespacehttp://www.k-zone.cn/in the Library (SWC.


Of course, if the current compilation environment is Flex Builder (flash builder), the above content will become simpler.



Copy the Library to the Lib folder where you want to use it, and then use the following statement:

Xmlns: zone = "http://www.k-zone.cn"

Finally, see:



Now there is a question: What is the difference between SWC generated by specifying namespace and manifest. xml and unspecified SWC? We can use the decompression software to open SWC and get the following two files:

Catalog. xml

Library.swf


The contents in catalog. XML are as follows:

<? XML version = "1.0" encoding = "UTF-8"?> <SWC xmlns = "http://www.adobe.com/flash/swccatalog/9"> <versions> <SWC version = "1.2"/> <flex version = "3.2.0" build = "3958"/> </versions> <features> <feature-script-deps/> <feature-components/> <feature-files/> </features> <Components> <Component classname = "testinga" name = "testinga" uri = "http://www.k-zone.cn"/></Components> <libraries> <library path = "library.swf"> <script name = "testinga" Mod = "1244462205848" signaturechecksum = "3185651073"> <def id = "testinga" /> <Dep id = "object" type = "I"/> <Dep id = "as3" type = "N"/> </SCRIPT> <digests> <digest type = "SHA-256" signed = "false" value = "inline"/> </digests> </library> </libraries> <files> </Files> </SWC>

Pay attention to the bold Section in red, which is the previously specified namespace.