September 2008
Intermediate to advanced
660 pages
20h 32m
English
Content preview from Programming Flex 3Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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What’s New in Flex 3
If you are familiar with earlier versions of Flex (Flex 1, Flex 1.5, and Flex 2), you may be interested in the relationship between Flex 3 and those earlier versions and what is new in Flex 3. In this section, we’ll look at this subject in more detail.
If you're familiar with Flex 1 or Flex 1.5, but you haven’t used Flex 2, you will find that Flex 3 is dramatically different from the version or versions of Flex you have used. Although Flex 3 continues to utilize MXML and ActionScript (both supported in Flex 1 and 1.5), it is vastly different from Flex 1 and Flex 1.5 in other respects. Flex 3 allows you to compile and deploy independent .swf files without any sort of expensive server-side services as was required by Flex 1 and 1.5. Flex 3 requires Flash Player 9, which allows for (and requires) the use of ActionScript 3. This latest ActionScript version introduces significant changes to the Flash Player API that enable a much improved way to add and remove display objects (including components) to the view.
If you’ve used Flex 2, but you’re new to Flex 3, you may be interested in knowing what is new in Flex 3 that wasn’t available in Flex 2. Some of the most significant changes/additions to Flex 3 are as follows:
- Runtime localization/internationalization
Although Flex 2 had built-in localization features, they were compile-time only, and they didn’t allow for runtime switching of locales. In Flex 3, the locale can be changed at runtime, and the resource bundles can ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.