Final View Controller

 // Create an instance of HALAddressBook
    HALAddressBook *addressBook = [[HALAddressBook alloc]init];

    // Ask for access to the user's address book
    BOOL result = [addressBook isAccessGranted];

    if (!result) {
        NSLog(@"Access was denied.");
    }

    // Access has been granted
    // Create array of all address book contacts
    NSArray *contacts = [addressBook contacts];


    // Initialize our friends array
    self.friends = [[NSMutableArray alloc]init];


    // Loop through all of the contacts.
    // Create an instance of HALContact
    // Set the instance's contactRef, firstName and phoneNumbers properties


    for (id currentContact in contacts) {
        // Create an instance of HALContact,
        // set its contactRef property,
        // set its firstName property,
        HALContact *contact = [[HALContact alloc]init];
        contact.contactRef = (__bridge ABRecordRef)(currentContact);
        contact.firstName = (__bridge_transfer NSString
                             *)ABRecordCopyValue(contact.contactRef, kABPersonFirstNameProperty);

        // If firstName is nil, continue
        if (!contact.firstName) continue;

       // Grab all of the phone number values for this contact
       NSArray *phoneNumberValues =  (__bridge NSArray *)(ABRecordCopyValue(contact.contactRef, kABPersonPhoneProperty));

        // Place a copy of all phone numbers into contact's
        // phoneNumber property
        contact.phoneNumbers = (__bridge NSArray *)(ABMultiValueCopyArrayOfAllValues((__bridge ABMultiValueRef)(phoneNumberValues)));


        // Check if the contact has multiple phone numbers
        BOOL result = [contact hasMultiplePhoneNumbers];

        // If contact only has one phone number, then add the
        // number from the phoneNumbers property into the
        // contact's mainPhoneNumber property
        if (!result) {
            contact.mainPhoneNumber = contact.phoneNumbers[0];
            // Add contact to friends array
            [self.friends addObject:contact];
            continue;
        }
            // Loop through the contacts phone numbers
            // and for every phone number, create a copy of the contact
            // and place the current phone number at index in
            // the copy's mainPhoneNumber property.

            //So if "Steve" has 2 phone numbers, he'll be added to our
            // friends array twice, once for each phone number.

            for (int index = 0; index < contact.phoneNumbers.count; index++) {
                HALContact *copyOfContact = [[HALContact alloc]init];
                copyOfContact.mainPhoneNumber = contact.phoneNumbers[index];
                copyOfContact.firstName = contact.firstName;

                // Add copyOfContact to the friends array
                [self.friends addObject:copyOfContact];
            }

    }