Why there is a MX library and also a Spark library in flex? [duplicate]

题

I'm new to flex, and very confused with that there is a "MX" library and also a "Spark" library? They have a lot of similar controls.

Why both of them exist? Which one should I choose?

解决方案

MX is the old Flex 3 Library.

Spark is the new Flex 4 Library. It has way better skinning/styling Capabilities, is faster and optimized for mobile.

IMHO in 95% of the cases Spark is the better choice.

其他提示

New flex architecture is spark. Spark components are skinanble and more lite weight. Also spark components could be used at mobile applications.

So if possible use spark components.

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