sorting - Swift AddressBook - 复制源中的所有人员，但存在排序问题

Question

这是我遇到的问题。非常感谢任何帮助。

代码如下:

var addressBook: ABAddressBookRef = {
    var error: Unmanaged<CFError>?
    return ABAddressBookCreateWithOptions(nil,
    &error).takeRetainedValue() as ABAddressBookRef
}()    

var source = ABAddressBookCopyDefaultSource(addressBook)!

var allPeople = ABAddressBookCopyArrayOfAllPeopleInSourceWithSortOrdering(addressBook, source: source, sortOrdering: kABPersonSortByFirstName)

错误消息:无法将表达式的类型“(ABAddressBookRef，源:@lvalue Unmanaged，sortOrdering:Int)”转换为类型“$T4”

Answer 1

两个错误:ABAddressBookCopyDefaultSource()返回 Unmanaged<ABRecord>! ，所以你必须调用takeRetainedValue()关于返回值。

ABAddressBookCopyArrayOfAllPeopleInSourceWithSortOrdering() 的最后一个参数必须转换为预期类型 ABPersonSortOrdering :

var source: ABRecord = ABAddressBookCopyDefaultSource(addressBook).takeRetainedValue()

var allPeople = ABAddressBookCopyArrayOfAllPeopleInSourceWithSortOrdering(addressBook,
    source, ABPersonSortOrdering(kABPersonSortByFirstName))