注册外部变更回拨通知 –

ABAddressBookRef ntificationaddressbook = ABAddressBookCreate();
    ABAddressBookRegisterExternalChangeCallback(ntificationaddressbook,MyAddressBookExternalChangeCallback,self);

实施回电 –

void MyAddressBookExternalChangeCallback (ABAddressBookRef ntificationaddressbook,CFDictionaryRef info,void *context)
{
    // called when there is any change in AddressBook
}

有关详细信息,请参阅此链接 –

Detect what was changed from ABAddressBookRegisterExternalChangeCallback