我可以在模拟器中运行旧的应用程序存档吗？

Question

When we deploy new versions of the iOS app into the App Store through XCode, an archive is generated.

Is there a way to take an old archive and run it in the simulator? I would like to do that in order to be able to easily test backward compatibility of the server-side code with all the previous versions of the app (or at least the two mostly used at that time).

I know that I could commit into a GIT repository and pull a specific version, but that has two problems: a. it is more complex than simply running an archive, b. it is error-prone and stops development of the new version on the machine it is done, and c. there could be some bias related to the compiler changes or any other XCode change in between rendering the version hard to compile.

I could not find any help on that on StackOverflow, nor any sign of this possibility in the Archive repository in XCode. Should I file a feature request @ Apple?

Answer 1

No, you can't take an archive generated for the App Store and run it in the simulator -- even if you could deal with the signing issues, etc, the archive generated for the App Store contains code compiled for ARM processors, which the i-devices have. Code built for the simulator is compiled for x86 processors, so that it can run on Macs.

Answer 2

One reasonably easy way to do this is through Test Flight . We routinely test new versions through Test Flight, the old ones stay there and it's possible to return to them anytime. It's a different build than the one you finally submit to the App Store, but that's something that will always be true, as the App Store build is signed using the distribution certificate and AFAIK won't run anywhere unless installed through the store.

Answer 3

You can make OTA (over the air) version of your app (then you can download those binary from a server), or simply create an ipa file and install it from iTunes.

In order to do this, you must create an adhoc provisioning profil. Check Apple documentation, since it's a little complicated to explain

Answer 4

If your archive was build for a device (AdHoc or Release) you can make an ipa file and install it on a device (explanation below on how-to). If it was build for the simulator (meaning i386 cpu architecture) then you can't create the ipa for the device.

As far as I know, you can make an ipa out of an Xcode 4 archive using command line:

/usr/bin/xcrun -sdk iphoneos PackageApplication
  "/absolute/path/to/MyApp.xcarchive/Products/Applications/MyApp.app"
  -o "/absolute/path/to/MyApp.ipa"

After you get the ipa, you can install it on physical devices, if it had been created with the correct signature, else you can re-sign it