ios - 在 iOS AddressBook 中使用未声明的标识符 'kABNicknameProperty' - 为什么？

Question

我正在尝试在 iOS (5.0+) 上获取地址簿条目的姓名和出生日期，我找到了一种使用 documentation 来实现此目的的方法。和 this post 。但是对于所有“kAB...”常量，我总是收到标题中提到的错误，尽管我确信我在项目中链接了两个库 AddressBook 和 AddressBookUI。

有人知道我做错了什么吗？

这是我的代码:

#import <AddressBook/AddressBook.h>
#import <AddressBookUI/AddressBookUI.h>

//其他一些代码...

- (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker shouldContinueAfterSelectingPerson:(ABRecordRef)person {

    NSString *name;

    if ((NSString *)ABRecordCopyValue(person, kABNicknameProperty) != nil) {
        name = (NSString *)ABRecordCopyValue(person, kABNicknameProperty);
    } else if ((NSString *)ABRecordCopyValue(person, kABFirstNameProperty) != nil) {
        name = (NSString *)ABRecordCopyValue(person, kABFirstNameProperty);
    } else if ((NSString *)ABRecordCopyValue(person, kABLastNameProperty) != nil) {
        name = (NSString *)ABRecordCopyValue(person, kABLastNameProperty);
    }

    int birthYear;
    if ((NSDate *)ABRecordCopyValue(person, kABBirthdayProperty) != nil) {
        NSDate *birthDate = (NSDate *)ABRecordCopyValue(person, kABBirthdayProperty) != nil;
        NSCalendar *cal = [[NSCalendar alloc] init];
        NSDateComponents *components = [cal components:0 fromDate:birthDate];
        birthYear = [components year];
    }

    // do something with name and birth year
    [self dismissModalViewControllerAnimated:YES];

    return NO;
}

Answer 1

看起来您使用的常量似乎是 Mac OS X 特有的。其 ABRecordCopyValue 版本的 iOS 文档提供了常量名称，例如 kABPersonNicknameProperty。