iOS 5 SDK is gone after upgrade to Xcode 4.5

问题:

I upgraded Xcode to version 4.5. Now all of the preferences are reset back to factory settings - editor fonts, colors, etc - but this is not my biggest concern.

It seems the iOS SDK 5.1 I was targeting is now gone. In project's build settings I can only choose Base SDK between "Latest iOS (iOS 6.0)" and "iOS 6.0". Is it possible to recover the previous installed SDKs?

回答1:

Current Xcode versions come only with the latest iOS SDK (which is a pity, but we cannot change it). Also Apple recommends to always use the latest SDK for building apps, and setting the "Deployment Target" to the minimum version that you plan to support.

You can copy an SDK (e.g. iPhoneOS5.1.sdk) from an older Xcode to

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs

and it will appear in the build settings. But you might run into problems later with this configuration.

回答2:

Download from this link, all sdks should be here. Some nice guy made it

http://uv.howett.net/~dhowett/sdks.php

回答3:

In Xcode go to preferences-> downloads and download iOS 5 simulator as well as command line tools. Hope this helped

回答4:

Yes!

When you click on the Simulator selection screen, at the bottom there's a More Simulators button.

However, be sure to set the Deployment Target to whatever Simulator you want to install. In your case, 5.1.

Then there will be another window which would show all the Simulators. Just install whichever you want! :)

回答5:

I suppose you meant 'Base SDK' not target - as base SDK you should use latest one, I think there is no way to install 5.1 on Xcode 4.5 (but I can be wrong). You always can set 'Deployment Target' to 5.1 (minimal supported target is 4.3).

Anyway, since Xcode is wrapped inside app bundle, you're able to have two Xcode versions installed parallel if you need.

回答6:

In my other laptop that still had XCode 4.2, the location of the iOS 5 SDK was here: /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/ (as opposed to the location mentioned above)

so i just copied it over and voila!

回答7:

1) First step: Download your simulator on this link http://uv.howett.net/~dhowett/sdks.php

2) Second step Unzip and add downloaded simulator in to path: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs

3) Restart Xcode. (in project settings set Deployment target 5.0 if needed)

回答8:

You only need to install the SDK that you want using the Xcode -> Preferences -> Downloads screen:

That will give you iOS5.1 simulator, iOS5.0 simulator, iOS4.3 simulator if you want them.

No trickery needed.