xcode - “AnyObject”不可转换为 ABRecordRef

Question

我正在尝试使用 swift 从地址簿中获取人们的生日。

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

但我在 xcode 中收到以下错误:

AnyObject' is not convertible to ABRecordRef

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

Answer 1

ABRecordRef 与 Swift 中的 ABRecord 相同。您应该能够使用 ABRecord 类中更简单的 API:

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