ABAddressBook fromOpaque(_:)在Swift 3中

Question

因此，我刚刚更新到Xcode 8，并将我的Swift 2.3代码转换为Swift 3，在这一行代码中出现了一个错误，而不是在Swift 2.3中：

func populateFrom(_ addressBook:ABAddressBook)
{
    let allPeople = ABAddressBookCopyArrayOfAllPeople(addressBook).takeRetainedValue()
    let nPeople = ABAddressBookGetPersonCount(addressBook)
    for index in 0..<nPeople
    {
       let person:ABRecord = Unmanaged<ABRecord>.fromOpaque(OpaquePointer(CFArrayGetValueAtIndex(allPeople, index))).takeUnretainedValue()
    }
}

现在问题是在线let person:ABRecord = Unmanaged<ABRecord>.fromOpaque(OpaquePointer(CFArrayGetValueAtIndex(allPeople, index))).takeUnretainedValue()

Xcode告诉我'fromOpaque' is unavailable: use 'fromOpaque(_:UnsafeRawPointer)' instead。但是我找不到Xcode告诉我要使用的函数，我只需要找到我目前正在使用的fromOpaque(value: UnsafeRawPointer)。

我怎么才能把这事做好？

Answer 1

您可以简化这一点，消除所有这些不透明的指针引用，例如：

func populate(from addressBook: ABAddressBook) {
    let allPeople = ABAddressBookCopyArrayOfAllPeople(addressBook).takeRetainedValue() as [ABRecord]
    for person in allPeople {
        let name = ABRecordCopyCompositeName(person).takeRetainedValue()
        print(name)
    }
}

或者，考虑到AddressBook框架在iOS 9中被废弃，您可以使用联系人框架：

let store = CNContactStore()
store.requestAccess(for: .contacts) { granted, error in
    guard granted else {
        print(error)
        return
    }

    self.populate(from: store)
}

和

func populate(from store: CNContactStore) {
    let formatter = CNContactFormatter()
    formatter.style = .fullName

    let request = CNContactFetchRequest(keysToFetch: [CNContactFormatter.descriptorForRequiredKeys(for: formatter.style)])
    do {
        try store.enumerateContacts(with: request) { contact, stop in
            print(formatter.string(from: contact))
        }
    } catch {
        print(error)
    }
}