ios - kABPerson 属性 |知道地址簿联系人是否也在使用 iPhone？

Question

我正在尝试开发一个应用程序，用户可以在其中通过 iMessage 发送消息。所以我可以从 AddressBook 导入联系人列表，并通过 MessageUI Framework 发送消息，但我想知道哪些导入的联系人也有 iPhone 所以他们可以使用 iMessage 功能。有什么方法可以从 kABPerson...Property 中找出来吗？

这是我的代码:

ABAddressBookRef addressBookRef = ABAddressBookCreateWithOptions(NULL, NULL);

    if (ABAddressBookGetAuthorizationStatus() == kABAuthorizationStatusNotDetermined) {
        ABAddressBookRequestAccessWithCompletion(addressBookRef, ^(bool granted, CFErrorRef error) {
            ABAddressBookRef addressBook = ABAddressBookCreate( );
        });
    }
    else if (ABAddressBookGetAuthorizationStatus() == kABAuthorizationStatusAuthorized) {

 CFErrorRef *error = NULL;
        ABAddressBookRef addressBook = ABAddressBookCreateWithOptions(NULL, error);
        CFArrayRef allPeople = ABAddressBookCopyArrayOfAllPeople(addressBook);
        CFIndex numberOfPeople = ABAddressBookGetPersonCount(addressBook);

        for(int i = 0; i < numberOfPeople; i++) {

            ABRecordRef person = CFArrayGetValueAtIndex( allPeople, i );

             NSString *firstName = (__bridge NSString *)(ABRecordCopyValue(person, kABPersonFirstNameProperty));
             NSString *lastName = (__bridge NSString *)(ABRecordCopyValue(person, kABPersonLastNameProperty));

             //Something like this ?
             BOOL *doeshaveiPhone = (__bridge BOOL *)(ABRecordCopyValue(person, kABPersonPhoneIPhoneLabel));


             NSLog(@"Name:%@ Surname: %@", firstName, lastName);


            ABMultiValueRef phones = ABRecordCopyValue(person, kABPersonPhoneProperty);

            for(CFIndex j = 0; j < ABMultiValueGetCount(phones); j++)
            {
                CFStringRef phoneNumberRef = ABMultiValueCopyValueAtIndex(phones, j);
                CFStringRef locLabel = ABMultiValueCopyLabelAtIndex(phones, j);
                NSString *phoneLabel =(__bridge NSString*) ABAddressBookCopyLocalizedLabel(locLabel);

                NSString *phoneNumber = (__bridge NSString *)phoneNumberRef;
                CFRelease(phoneNumberRef);
                CFRelease(locLabel);
                NSLog(@" - %@ (%@)", phoneNumber, phoneLabel);

            }

        }

Answer 1

您的代码是确定地址簿中的人是否拥有 iMessage 的最佳方式。但是，有一个缺点:只有在用户正确设置他们的联系人时它才有效。字段设置不当通常会使开发应用程序变得困难。

这个问题之前有人问过。 Here,得票最高的答案是，

your heurisitic might be ok but it relies on the USER correctly setting that attribute.

depending on the context it might be good enough / or not .. dont know.

there is no real way to detect which user really uses ios (no API)