ios - 使用联系人框架将联系人添加到群组

Question

我使用联系人组创建了一个组，然后我想向该组添加一个联系人。

        NSPredicate *predicate = [CNGroup predicateForGroupsWithIdentifiers:@[[[NSUserDefaults standardUserDefaults]objectForKey:@"groupIDentifier"]]];
        NSArray *groups = [store groupsMatchingPredicate:predicate error:&saveError];

        CNMutableContact *contact = [[CNMutableContact alloc] init];
        contact.familyName = @"Doe";
        contact.givenName = @"John";

        CNLabeledValue *homePhone = [CNLabeledValue labeledValueWithLabel:CNLabelHome value:[CNPhoneNumber phoneNumberWithStringValue:@"312-555-1212"]];
        contact.phoneNumbers = @[homePhone];

        CNSaveRequest *request = [CNSaveRequest new];
        CNGroup *group = [groups firstObject];
        [request addContact:contact toContainerWithIdentifier:group.identifier];

        if (![store executeSaveRequest:request error:&saveError]) {
            NSLog(@"error = %@", saveError);
        }

错误是:

error = Error Domain=CNErrorDomain Code=200 "Updated Record Does Not Exist" UserInfo={CNInvalidRecordIdentifiers=( "45FFBB0D-C74B-4A14-8293-9099EA7DEF81:ABGroup" ), NSLocalizedDescription=Updated Record Does Not Exist, NSLocalizedFailureReason=The save request failed because it updates a record that does not exist or has already been deleted.}

我也试过使用:

[request addMember:contact toGroup:[groups firstObject]];

在这种情况下，错误是:

error = Error Domain=CNErrorDomain Code=200 "Updated Record Does Not Exist" UserInfo={CNInvalidRecords=(
    "<CNContact: 0x7f8ce97aa640: identifier=7CC6BC1D-1B23-48DA-8282-06115F542A97:ABPerson, givenName=John, familyName=Doe, organizationName=, phoneNumbers=(\n    \"<CNLabeledValue: 0x600001873cc0: identifier=68277209-3AE4-40AF-9EEA-DF0E1D01883C, label=_$!<Home>!$_, value=<CNPhoneNumber: 0x600000433300: stringValue=312-555-1212, initialCountryCode=(null)>>\"\n), emailAddresses=(\n), postalAddresses=(\n)>" ), NSLocalizedFailureReason=The save request failed because it updates a record that does not exist or has already been deleted., NSLocalizedDescription=Updated Record Does Not Exist}

Answer 1

我发现的疯狂之处在于:我需要同时调用 addMember 和 addContact，才能真正将联系人添加到组中。

    CNGroup *group = [groups firstObject];
    [request addMember:contact toGroup:group];
    [request addContact:contact toContainerWithIdentifier:nil];

if (![store executeSaveRequest:request error:&saveError]) {
        NSLog(@"error = %@", saveError);
    }

Apple 支持的回应:

您必须分别保存联系人和群组。然后检查它们是否存在，然后才能将联系人添加到该组。否则，您将收到与输出中相同的错误。

1. 创建群组
2. 执行联系人的保存
3. 检查联系人和组是否都存在
4. 使用 addMember 将联系人添加到组

这实际上达到了目的，但我不知道为什么我必须实际提出两种类型的请求。