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objective-cswiftcontactsios9abaddressbook

CNContact :migration from ABAddressBook : iOSLegacyIdentifier + lastModifcationDate

i have a DB that stores all local user contacts. now i want to use the new framework (contact framework), my problem is that the CNContact have a new identifier now (no longer the auto-incretntal one) called "identifier" and i can't mach old entries in my DB with a potential update of a contact.

i have 2 questions:

  1. in xcode debugger, i can see _iOSLegacyIdentifier(the old, auto-incremental one) as a property in CNContact, how can i get it without private API calls
  2. i can't see "lastModifcationDate" for the CNContact (in ABAddressBook framework it is called kABPersonModificationDateProperty) how can i get it using the new framework.

thanks.

[EDIT]: i have open a ticket for Apple about this and here's the answer:

There are no plans to address this based on the following:

1) iOSLegacyIdentifier is private API for CNContact. 2) A modification date is not offered on CNContact.

To migrate your DB you can to match contacts by name and disambiguate by manually matching other properties like email addresses or phone numbers.

We are now closing this report.

as you can see there's no real solution for this, we have to guess..

Solution

  • 1.Doesn't exists. There is only private selector

    [CNContact iOSLegacyIdentifier];

    or you can get the same

    [CNContainer CNContainerIOSLegacyIdentifierKey];

    Mind that this is not compiled in framework. Use perform selector

    2.There is no such property in the new framework. If you disassembly the Contact framework you can see that uniqueId is still used in predicates that touches underlaying core data. But that's a work for you and again dance with private selectors

    (blame Apple, not me that there is no way). Take a look at internals of the framework.