在Xcode Swift崩溃中从地址簿中检索公司名称

Question

我试图从地址簿中检索一些条目但是却遇到了“公司”的问题。名称值。

如果地址簿中的联系人已完成公司，则可以正常工作。但是如果联系人没有崩溃应用程序（线程1：EXC_BAD_ACCESS（代码= 1，地址= 0x0）。

我尝试了各种方法来检测nil，但似乎没有一种方法可行。这部分代码： -

func peoplePickerNavigationController(
    peoplePicker: ABPeoplePickerNavigationController!,
    didSelectPerson person: ABRecordRef!, property: ABPropertyID, identifier: ABMultiValueIdentifier) {

 let addresses: ABMultiValueRef = ABRecordCopyValue(person, property).takeRetainedValue()

      let indx = Int(identifier) as CFIndex

      let address: NSDictionary = ABMultiValueCopyValueAtIndex(addresses,
        indx).takeRetainedValue() as NSDictionary

      if address[kABPersonAddressZIPKey as String] != nil {
        postcode = address[kABPersonAddressZIPKey as String] as String
      }

      if address[kABPersonAddressCountryKey as String] != nil {
        country = address[kABPersonAddressCountryKey as String] as String
      }

      if address[kABPersonAddressStateKey as String] != nil {
        county = address[kABPersonAddressStateKey as String] as String
      }

      if address[kABPersonAddressCityKey as String] != nil {
        city = address[kABPersonAddressCityKey as String] as String
      }

      if address[kABPersonAddressStreetKey as String] != nil {
        street = address[kABPersonAddressStreetKey as String] as String
      }


      let recordType = ABRecordCopyValue(person, kABPersonOrganizationProperty)
      if recordType != nil {
        company = ABRecordCopyValue(person, kABPersonOrganizationProperty)?.takeRetainedValue() as String? ?? ""
      } else {
        println("just a person, not company")
      }

有什么建议吗？

非常感谢，

安东尼