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Editorial Team
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Asked: 2026-05-29T23:41:26+00:00

What I expect to happen: I create an NSUserDefaults object with a username (NSString

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What I expect to happen:

I create an NSUserDefaults object with a username (NSString of my choosing right?) and when I save defaults it saves those defaults for just that user.

What actually happens:

When I try creating NSUserDefaults for different usernames they are always saved into the same com.companyname.appname.plist file so it seems to ignore the per-user part and just save app-wide.

My Question:

Does this work on iOS or only OSX? What am I missing? Shouldn’t I be getting a different plist file per-user? I reviewed the one .plist it does create in xcode and there’s nothing in there that tells the default it belongs to a particular username.

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1 Answer

  1. Editorial Team

    Yes you are misunderstanding it, but really it’s a badly named method.

    Essentially it’s to allow Apps that run as root (or superuser) to access the UserDefaults for other users.

    In this case, user is a unix user, not some arbitrary partitioning name that you (the developer) chooses.

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