URLForUbiquityContainerIdentifier returns nil even if configured correctly

iphone objective-c ios icloud
Martin Hering picture Martin Hering · Dec 14, 2011 · Viewed 8.2k times · Source

I am having the problem, that URLForUbiquityContainerIdentifier is returning nil in some cases even if the user has set up everything correctly in the settings. My code:

dispatch_async(someQueue, ^{

    if (![[NSFileManager defaultManager] URLForUbiquityContainerIdentifier:nil]) {
        ErrLog(@"iCloud container not available.");
        return;
    }

    dispatch_async(dispatch_get_main_queue(), ^{
       [...]
    });

});

Does anybody came across the same problem? I am setting nil as the container identifier which should work according to the Apple docs, but I am not so convinced anymore about that. Also this code works fine for the majority of users, but somehow not for everybody.

Answer

barksten picture barksten · Feb 27, 2012

Check that you have enabled iCloud containers in your entitlement. The containers are not added by default when you enable entitlements. Click the "+" sign in Target/Summary/Entitlements to add your appId.

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