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Editorial Team
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Asked: 2026-05-21T18:32:40+00:00

To continue in my post-XCode 4 upgrade confusion, i came across this…. My Build

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To continue in my post-XCode 4 upgrade confusion, i came across this….

My Build Settings has Base SDK as iOS 4.3.

Now back in XCode 3.x days I remember 2 things:

  1. The Base SDK was always set to iOS 4.0.
  2. The target device was set to iphone 3.0 (to ensure greatest iphone audience).

What consequence is there for this Base SDK?
I mean, if SDK 4.0 provides support for features that only iOS4/iPhone4) provides, then why are these two separate build settings?

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1 Answer

  1. Editorial Team

    You can choose iOS 4.0 as your base SDK, but as long as you do not use APi’s that are 4.0 and up your code should run on 3.x unless you used apis that were only in 3.2 and so on =)

    Always a good thing to check the availability of methods when you look in the class reference.

    I recommend using 4.x stuff.. because the people that use 3.0 are not worth supporting ( Only the really old devices are still running that, iPhone 1 — most users have upgraded by now to an iPhone 3Gs or 4 ), the features you get in 4.x, including GCD are awesome.

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