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Address book callback not called

I have an iPhone app that uses AddressBook.framework and uses Core Data to store these contacts. To ensure that I update my own database when the address book is updated (whether via MobileMe or editing in my own app), I subscribe to a notification when the address book is updated. I am calling this on startup:

ABAddressBookRef book = ABAddressBookCreate();
ABAddressBookRegisterExternalChangeCallback(book, addressBookChanged, self);

Which (presumably) causes this on any edit. I have ABPersonViewController that allows editing and addressBookChanged will never get called.

void addressBookChanged(ABAddressBookRef reference, CFDictionaryRef dictionary, void *context) {
    // The contacts controller we need to call
    ContactsController *contacts = (ContactsController *)context;

    // Sync with the Address Book
    [contacts synchronizeWithAddressBook:reference];
}

Is there any reason it won't get called?

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1 answer


It turns out that the reason it wasn't called was a simple mistake. I did:

CFRelease(book);


After setting the notification. I removed this and now it is being called.

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