从iPhone加载联系人在Swift中崩溃 [英] Loading contacts from iPhone crashes in Swift

问题描述

我正在尝试为我的应用加载联系人。在Simulator中运行正常。但是在iPhone上崩溃了。
我正在使用的代码：

I am trying to load the contacts for my App. It is working fine in Simulator. But crashing in iPhone. The code I am using:

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).")
        }
    }
}

此功能正确无误，接触很少后，应用程序崩溃并显示日志：

This function is being correctly and after getting few contacts, the app crashes with log:

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

时意外发现nil

我认为这是由于联系人中的姓名所致，如果我尝试获取电话号码，它可以正常工作。.我可以看到所有电话号码，但是如果看到姓名，我可以看到350个联系人，然后应用崩溃s。

I think it is due to Name in contacts, if I try to get the phone number, it is working fine.. I can see all the phone numbers, but in case of Name, i can see around 350 contacts and then app crashes.

有什么办法可以解决吗？

Any idea how I can solve this?

推荐答案

到帐户对于可能的零值（当联系人的记录缺少名称时可能发生），请更改

To account for a potential nil value (which may happen when a contact's record is missing a name), change

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

至

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

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