Old View Controller Snippet

//Asks for access to Address Book.
    ABAddressBookRef m_addressbook =  ABAddressBookCreateWithOptions(NULL, NULL);

    ABAddressBookCopyArrayOfAllPeople(m_addressbook);

    NSLog(@"%@", m_addressbook);

    __block BOOL accessGranted = NO;
    if (ABAddressBookRequestAccessWithCompletion != NULL) {
        dispatch_semaphore_t sema = dispatch_semaphore_create(0);
        dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
            @autoreleasepool {
                // Write your code here...
                // Fetch data from SQLite DB
            }
        });

        ABAddressBookRequestAccessWithCompletion(m_addressbook, ^(bool granted, CFErrorRef error)

                                                 {
                                                     accessGranted = granted;

                                                     dispatch_semaphore_signal(sema);
                                                 });

        dispatch_semaphore_wait(sema, DISPATCH_TIME_FOREVER);
    }

    if (accessGranted == 0) {


        [self performSegueWithIdentifier:@"addFriendsToMediaCaptureSegue" sender:self];
    }
    else if (accessGranted == 1) {


        NSArray *allContacts = (__bridge_transfer NSArray
                                *)ABAddressBookCopyArrayOfAllPeople(m_addressbook);
        //Loop through all contacts.

        int z = allContacts.count;

        for (int i = 0; i < z; i++) {
            //Place current contact in ABRecordRef

            ABRecordRef contactPerson = (__bridge ABRecordRef)allContacts[i];

            //Create string from current contact's first name property.

            NSString *firstName = (__bridge_transfer NSString
                                   *)ABRecordCopyValue(contactPerson, kABPersonFirstNameProperty);

            //Create phone number from contact's phone number property.

            ABMultiValueRef *phoneNumber = ABRecordCopyValue(contactPerson, kABPersonPhoneProperty);
            NSMutableArray *numbers = [[NSMutableArray alloc] init];

            NSString *number = [[NSString alloc] init];

            //Loop through all of contact's phone numbers.
            if (phoneNumber) {
                CFIndex numberOfPhoneNumbers = ABMultiValueGetCount(phoneNumber);

                for (CFIndex i = 0; i < numberOfPhoneNumbers; i++) {
                    number = (__bridge_transfer NSString *)ABMultiValueCopyValueAtIndex(phoneNumber, i);
                    CFStringRef label = ABMultiValueCopyLabelAtIndex(phoneNumber, i);
                    if (label) {

                        //Add current number to array.
                        if(firstName.length > 0) {

                            [numbers addObject:number];

                        }
                    }
                    CFRelease(label);
                }
                CFRelease(phoneNumber);
            }

            int numbersIndex;

            //Loop through all of the contact's numbers.

            for(numbersIndex = 0; numbersIndex < numbers.count; numbersIndex++) {

                //Set string global to current number.

                self.numberValues = numbers[numbersIndex];


                //Add current first name to both arrays. We want them to match for later.

                [self.potentiaFriendsNotInParseFirstNamesArray addObject:firstName];

                //Add current phone number to array.

                [self.potentiaFriendsPhoneNumberArray addObject:self.numberValues];

            }
        }

           }