In the previous chapter, I showed you how to load external XML content into both Flash and Flex using the
URLLoader class. You saw that you can load content from a static XML file or from a server-side page that generates an XML
stream. Both Flash and Flex can use the
URLLoader class. The advantage of loading external content is that your applications will be more flexible than if you store the content within the application itself.
While Flex can use the URLLoader class, it can also use the HTTP
Service class to access many types of external content, including -XML-formatted content. It's possible to either use a tag-based approach with the
<HTTPService> MXML element or to write ActionScript 3.0 code ...