ios - 在EKParticipant/EKAttendee中访问电子邮件

Question

我想在EKEventKit中获取事件参与者的电子邮件地址。

我有以下代码:

if ( event.attendees.count > 0)
{
    NSArray *people = event.attendees;
    for(EKParticipant *person in people)
    {
        if ( person.participantType == EKParticipantTypePerson && person.URL.resourceSpecifier.length > 0)
        {
            NSString *dataString = [NSString stringWithFormat:@"event_id=%ld&name=%@&is_me=%d&email=%@&role=%@",event_id,person.name, person.isCurrentUser,person.URL.resourceSpecifier, @"attendee"];
            //<DO SOMETHING USEFUL WITH dataString>;
        }
    }
}

当我运行代码时，人员将填充以下数据:

EKAttendee <0x17809acc0> {UUID = 4F657EA4-452A-412B-A9AA-FEC5551DC096; name = A. Real Person; email = realperson@therightdomain.com; status = 0; role = 0; type = 1}

如何访问电子邮件字段？

我尝试(如上所述)使用URL.resourceSpecifier，但这通常是一些奇怪的字符串，绝对不是电子邮件地址。

Answer 1

EKParticipant对象的“描述”是各种属性列表。我尝试了几种不同的方法，将列表解析为包含key:value对的对象，但未成功。所以我写了以下内容:

                            // This is re-useable code that converts any class description field into a dictionary that can be parsed for info
                    NSMutableDictionary *descriptionData = [NSMutableDictionary dictionary];
                    for (NSString *pairString in [person.description componentsSeparatedByString:@";"])
                    {
                        NSArray *pair = [pairString componentsSeparatedByString:@"="];
                        if ( [pair count] != 2)
                            continue;
                        [descriptionData setObject:[[pair objectAtIndex:1] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] forKey:[[pair objectAtIndex:0]stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]];
                    }

有了这个，我只需获得电子邮件地址

    [descriptionData valueForKey:@"email"]