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F3 v. F4: New Series Overview

By Rich Tretola | January 5, 2010
8,066 views

There have been many changes to the way you use the Spark (xmlns:s) components of Flex 4 vs the older Halo (xmlns:mx) components of Flex 3. My plan of this series is to release a simple comparison post every couple of days comparing the way you would do something in Flex 4 vs Flex 3.

Lets start with the root application tag. You will see that the default project created with Flash Builder 4 will include the fx, s, and mx, namespaces. The Flex 3 project created with Flex Builder 3 includes only the original mx namespace.

Flex application created with Flash Builder 4:

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<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/mx"
        minWidth="955" minHeight="600">

Flex application created with Flex Builder 3:

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<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="absolute">

Next, we’ll dig into some components.

Please visit this tag f3v.f4 for the complete series.

Topics: Flex, Flex 3 (Moxie), Flex 4 | 3 Comments »

3 Responses to “F3 v. F4: New Series Overview”

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  2. Flex 4 & Flash Builder 4 are Here! | EverythingFlex: Flex & AIR Says:
    March 22nd, 2010 at 4:40 am

    [...] F3 v. F4: New Series Overview [...]

  3. MBT Fanaka GTX Says:
    April 6th, 2010 at 1:42 pm

    thanks for your blog!

    Reply to this comment

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