Comments on: Building 2.x apps on iPhone OS 3.0 beta

By: Nick Fogelson

Nick Fogelson — Thu, 14 May 2009 22:38:14 +0000

Theoretically 2.2 apps shouldn’t crash under 3.0…

but lots of them do. I’m not entirely sure why, since all the 2.2 APIs should be in 3.0. They seem to crash intermittently, like maybe their getting memory warnings and crashing that way. Sometimes restarting the iPhone gets those apps working again, other times not.

By: Rich

Rich — Sat, 21 Mar 2009 21:06:25 +0000

Daniel,

You can install multiple versions of XCode. If you still have a copy of the 2.2 SDK, just install it, and select a new location for the Developer Essentials.

i.e by default, XCode installs in /Developer
Just create a folder called say XCode 3.1.2 and install it there.
XCode app will be in the ‘Applications’ subfolder so you can easily create an alias to the different versions of XCode.

When it comes to submitting your 2.2 app, remember to select the correct SDK in the Target, and be sure to use XCode 3.1.2 for now.

Hope this helps

Rich

By: Daniel Isidro

Daniel Isidro — Wed, 18 Mar 2009 12:59:21 +0000

The problem I see is whether we will be able to submit our compiled 2.2 apps to the App Store with the new SDK 3.0. I only have one iPhone 3G and it seems I’ll have to wait until this summer to test the new SDK 3.0 as I have to be able to update my in-production 2.2 apps.

Thanks for the update!