'AnyObject‘不能转换为ABRecordRef

Question

我正试着从通讯录上得到人们的生日。

    let ab = ABAddressBook.sharedAddressBook()
    var birthday: CFDateRef?       
    for person in ab.people() {
        birthday = ABRecordCopyValue(person, kABBirthdayProperty)
    ...

但是，我在xcode中得到了以下错误：

AnyObject‘不可转换为ABRecordRef

ABRecordCopyValue需要一个ABRecordRef对象作为第一个参数，但是person是AnyObject类型的。它也不适用于person as ABRecordRef

Answer 1

ABRecordRef和Swift中的ABRecord是一样的。您应该能够使用来自ABRecord类的更简单的API：

for person in ab.people() as [ABPerson] {
    person.valueForProperty(kABBirthdayProperty)...
}