I am trying to keep my app compatible with iOS 3.1 while support for some new features of iOS 4 Is expanding, such as limited-decision background tasks ( startBackgroundTaskWithExpirationHandler: ).
The proper way to do this is to choose the responses: for every appropriate call, but I'm still afraid I will miss a call here or there. Is there a way to check any calls that I can remember in automatic fashion - can I run some compile while compiling?
I could just build with SDK 3.1 as my active SDK, but Apple does not install the SDK 3.1 now and I do not know where it is now.
You can install a second XCode at a different location so you can do your project with SDK 3.1. You can open it with that old encode.
I am trying to integrate the old SDK into my new XCode so that I did not succeed SDK 3.0, 3.1, 3.2 and 4.0 all from the same XCode installation but these efforts have not been successful yet.
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