从 iPhone 加载联系人在 Swift 中崩溃

Question

我正在尝试为我的应用程序加载联系人。它在模拟器中运行良好。但是在 iPhone 中崩溃了。我使用的代码：

func getContactNames()
    {
    let allContacts = ABAddressBookCopyArrayOfAllPeople(addressBookRef).takeRetainedValue() as Array
    for record in allContacts {
        let currentContact: ABRecordRef = record
        let currentContactName = ABRecordCopyCompositeName(currentContact).takeRetainedValue() as String
        if(currentContactName != "") {
                println("found \(currentContactName).")
        }
    }
}

此功能正常运行，在获得少量联系人后，应用程序崩溃并显示日志：

fatal error: unexpectedly found nil while unwrapping an Optional value
(lldb)

我认为这是由于联系人中的姓名，如果我尝试获取 phone 号码，它工作正常。我可以看到所有 phone 号码，但如果名字，我可以看到大约 350 个联系人，然后应用程序崩溃了。

知道如何解决这个问题吗？

Answer 1

要考虑潜在的零值（当联系人的记录缺少姓名时可能会发生），更改

let currentContactName = ABRecordCopyCompositeName(currentContact).takeRetainedValue() as String

至

let currentContactName = ABRecordCopyCompositeName(currentContact)?.takeRetainedValue() as? String

Answer 2

使用上面的代码对我有用

func readAllPeopleInAddressBook(addressBook: ABAddressBookRef){

/* Get all the people in the address book */
let allPeople = ABAddressBookCopyArrayOfAllPeople(
  addressBook).takeRetainedValue() as NSArray

for person: ABRecordRef in allPeople{


    if(ABRecordCopyValue(person,
        kABPersonFirstNameProperty) != nil){
            let firstName = ABRecordCopyValue(person,
                kABPersonFirstNameProperty).takeRetainedValue() as? String
             println("First name = \(firstName)")
    }

    if (ABRecordCopyValue(person,
        kABPersonLastNameProperty) != nil){

            let lastName = ABRecordCopyValue(person,
                        kABPersonLastNameProperty).takeRetainedValue()as? String
            println("Last name = \(lastName)")
    }



   }
}

从 iPhone 加载联系人在 Swift 中崩溃

Loading contacts from iPhone crashes in Swift

iphone

contacts

abaddressbook

ios

swift