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iosiphonensfilemanager

containerURLForSecurityApplicationGroupIdentifier returns nil for a few users

I have an app in the store that uses the directory returned by containerURLForSecurityApplicationGroupIdentifier: for certain data. This works well and the app is live. I'm even throwing an exception in case this method returns nil.

Now I've got a couple of crash reports, stemming from my exception, meaning for a few users this method returns nil. According to Crashlytics, about ⅓ of these users have a jailbreak. I'm not sure if the other ⅔ also have a jailbreak but Crashlytics doesn't detect it or whether there may be other reasons for this method to return nil. Does anyone have a possible explanation?

Solution

  • I followed up with Apple DTS and they think this shouldn't happen. So possibly an iOS bug, filed as Radar 24882556.