Image.xcassets: Can I specify different app icons for iOS 6 and 7?

Question

I'd like to use different app icons on iOS 6 and 7. (I need this due to the different rounded rectangle shapes because my icon includes a border line.)

For most sizes this is not a problem because the sizes are different. However, the iOS 6 spotlight icon and the iOS 6-7 settings icon both use a 29*29 (non-retina) or 58*58 (retina) app icon.

I'm wondering if the new xcassets bundles could be used to specify different icon files for the different OS versions.

The Contents.json file inside the xcassets bundle specifies an array of images with various selectors such as size, idiom and scale. Unfortunately I couldn't find any documentation on the file format (probably it's not even public in Apple's view).

My question: Is there also a selector for the OS version that allows me to specify different 29*29 icons for iOS 6 and 7?

Answer 1

With the introduction of the new xcode (xcode 5) you can now specify different app icons and launch icons in the assets file. Notice on the image below that in xcode 5 you now have image.xcassets file. and in that file notice that you have AppIcon and LaunchImage and on that you have iPhone Spotlight iOS 7 40pt and iPhone App iOS 5, 6 57pt. Jeremiah Smith has indicated this isn't possible with an out of date link which was still valid until xcodee 5 is released, but it is possible.