Android GridLayout and Space backport

Question

Is there a backport of GridLayout and Space (both introduced in SDK 4.0) available (or planned) for older SDK\'s?

Answer 1

The new version of the compatibility library (or support package, or whatever Google is calling it now) has arrived: http://developer.android.com/sdk/compatibility-library.html

(Actually, I think support package is the new name?)

There is no mention in the release notes or the documentation of the Gridlayout or the Space widget.

On the other hand, if you try to add these widgets to a project based on an older SDK then you get a helpful message offering to add them as long as you use the support package.

But, given the mixed messaging I'm scared to use them. Perhaps the lack of any mention or documentation from Google means that they the support is rather alpha and only for the brave (or foolish)?