Changing the base SDK in Xcode

问题:

I am using Xcode 4.5. I developing an iOS app, I am targeting iOS 5.1.

I want to change the Base SDK to iOS 5.1, but it only displays iOS 6.

Where have all the others go?

回答1:

You should always use the latest SDK. If you want to target older iOS versions, change the Deployment Target setting to the minimum iOS version you want to support.