Comments on: Episode 28: The iPad Super Episode http://www.coreint.org/2010/04/episode-28-the-ipad-super-episode/ Thu, 25 Aug 2011 21:33:47 +0000 hourly 1 http://wordpress.org/?v=3.0.5 By: Manton Reece http://www.coreint.org/2010/04/episode-28-the-ipad-super-episode/comment-page-1/#comment-1817 Manton Reece Thu, 06 May 2010 22:08:54 +0000 http://www.coreint.org/?p=246#comment-1817 Hi Hunter, thanks for the correction. You're right, everything for a universal app is checked at runtime. We'll mention this on the next show to hopefully minimize the amount of confusing we've caused for our listeners. :-) The funny part is that we actually talked back and forth about this a little (of course, without checking), but I edited it out of the final podcast. That'll teach me! Hi Hunter, thanks for the correction. You’re right, everything for a universal app is checked at runtime. We’ll mention this on the next show to hopefully minimize the amount of confusing we’ve caused for our listeners. :-)

The funny part is that we actually talked back and forth about this a little (of course, without checking), but I edited it out of the final podcast. That’ll teach me!

]]> By: Hunter http://www.coreint.org/2010/04/episode-28-the-ipad-super-episode/comment-page-1/#comment-1766 Hunter Sun, 02 May 2010 00:45:41 +0000 http://www.coreint.org/?p=246#comment-1766 Hey Guys, Based on my understanding, I'm not sure your discussion on iPhone universal apps was totally technically accurate. Unlike universal binaries on the Mac, which included Intel and PPC binaries in a single package, I believe a universal app on the iPhone is a single binary, compiled for arm6/arm7. To quote Apple: "A Universal app is optimized to run on all iPhone OS devices—itʼs essentially an iPhone app and an iPad app built as a single binary." That's why you need to use conditional coding and checking for the existence of certain classes instead of something like using pre-processor macros to determine which code path you're traveling down. Anyway, I'm not an expert but I believe the above is correct. Full details here: http://devimages.apple.com/iphone/resources/introductiontouniversalapps.pdf Keep it up, love the show. Cheers, Hunter Hey Guys,

Based on my understanding, I’m not sure your discussion on iPhone universal apps was totally technically accurate.

Unlike universal binaries on the Mac, which included Intel and PPC binaries in a single package, I believe a universal app on the iPhone is a single binary, compiled for arm6/arm7.

To quote Apple:

“A Universal app is optimized to run on all iPhone OS devices—itʼs essentially an iPhone app and an iPad app built as a single binary.”

That’s why you need to use conditional coding and checking for the existence of certain classes instead of something like using pre-processor macros to determine which code path you’re traveling down.

Anyway, I’m not an expert but I believe the above is correct. Full details here:
http://devimages.apple.com/iphone/resources/introductiontouniversalapps.pdf

Keep it up, love the show.

Cheers,
Hunter

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