MACROMEDIA FLEX-FLEX ACTIONSCRIPT LANGUAGE Manual do Utilizador descarregar pdf (Página 6)

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Flex-Overview

This chapter describes the basic definition and concepts of Adobe Flex:.

What is Flex?

LEX is an open source application framework.

 Flex is a powerful, open source application framework which allows to build traditional applications for

browser, mobile and desktop using the same programming model, tool, and codebase.

 Flex provides FLEX SDK consisting of the Flex class library (ActionScript classes), the Flex compilers, the

debugger, the MXML and ActionScript programming languages, and other utilities to build expressive and

interactive rich internet applications (RIA)

 Flex takes care of the user interface (UI) or the client-side functionality of a web application. Server-side

functionality dependent on server-side components written in a traditional scripting language (Java/ PHP

etc.)

 A Flex based application actually delivered as a SWF file and it closely resembles the HTML / Javascript

portion of a traditional web application.

 Flex application is deployed as SWF file(s) plus an HTML wrapper, the CSS file(s) and any server-side

script files (i.e. Java, .CFM, .PHP, etc) to the server. Like traditional web applications

 These resources are delivered from the server to the client browser using the customary HTTP request /

response fashion and Flash Player run the application in the browser.

Advantages of Flex

 Flex applications being Flash Player based can access device capabilities like GPS, camera, local

database, graphics accelerometer.

 Flex applications can run on Andriod, BlackBerry Tablet OS, iOS devices.

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