kCFPreferencesAnyUser with a container is only allowed for System Containers

Asked Aug 27 '17 at 14:22

Active Oct 12 '18 at 00:51

Viewed 4,020 times

I have an app that shares preferences with a Today extension, following the approach described in many places (like this), i.e., creating and registering an App Group, then loading preferences:

if let ud = UserDefaults(suitName: "group.myshop.MyDefaultsSuite") {
  let myPref = ud.string(forKey: "myUserName")
  ...
}

This worked fine through about April, 2016, and I didn't touch the app for a long time. Then I downloaded the latest Xcode (v8.3.3) and updated my code for Swift 3 as reflected above.

However, now on the ud.string() line I get a console warning Using kCFPreferencesAnyUser with a container is only allowed for System Containers, detaching from cfprefsd. And my preferences fail to load. I've seen other issues posted that look very similar, but no solutions. I'd rather not rename my preferences bundle or pre-pend my group ID as that would effectively block access to previously saved settings.

Has anyone else found a solution?

edited Oct 12 '18 at 00:51

pkamb

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asked Aug 27 '17 at 14:22

Tim Herzog

I have not seen this error in iOS, but in running with Catalyst on macOS I see it and my preferences cannot be read/written – lewis Jun 18 '19 at 10:25
Did you ever figure this out? – RopeySim Jun 02 '20 at 06:41
Not really. I ended up taking out the Today extension as it turned out not to be terribly useful for my app. I haven't looked at the issue in quite a while so I'm not sure if there's a better approach these days - sorry. – Tim Herzog Jun 04 '20 at 15:02
2

Found this issue right now on ios 14.4 – Nikita Semenov Feb 08 '21 at 12:50

kCFPreferencesAnyUser with a container is only allowed for System Containers

0 Answers0