iOS10 上的地址簿崩溃

在 iOS10.0 中，从联系人选择器中选择联系人会使应用程序崩溃。联系人选择器显示使用ABPeoplePickerNavigationController像这样：

let contactsPicker = ABPeoplePickerNavigationController()
contactsPicker.peoplePickerDelegate = self
self.presentViewController(contactsPicker, animated: true, completion: nil)

这是崩溃日志中的堆栈跟踪：

*** Terminating app due to uncaught exception 'CNPropertyNotFetchedException', reason: 'A property was not requested when contact was fetched.'
*** First throw call stack:
(
    0   CoreFoundation                      0x0000000105a1c34b __exceptionPreprocess + 171
    1   libobjc.A.dylib                     0x00000001052cd21e objc_exception_throw + 48
    2   CoreFoundation                      0x0000000105a85265 +[NSException raise:format:] + 197
    3   Contacts                            0x000000010dc6d96f -[CNContact sectionForSortingByFamilyName] + 160
    4   Contacts                            0x000000010dc3e18e __55-[CNContact(iOSABCompatibility) overwritePerson:error:]_block_invoke + 44
    5   CoreFoundation                      0x00000001059ad2fd __53-[__NSArrayI enumerateObjectsWithOptions:usingBlock:]_block_invoke + 77
    6   CoreFoundation                      0x00000001059ad1df -[__NSArrayI enumerateObjectsWithOptions:usingBlock:] + 207
    7   Contacts                            0x000000010dc3e0f4 -[CNContact(iOSABCompatibility) overwritePerson:error:] + 240
    8   Contacts                            0x000000010dc3dfc0 -[CNContact(iOSABCompatibility) detachedPersonWithError:] + 46
    9   AddressBookUI                       0x00000001057bdd77 -[ABPeoplePickerNavigationController contactPicker:didSelectContact:] + 145
    10  ContactsUI                          0x0000000112396eb2 -[CNContactPickerViewController pickerDidSelectContact:property:] + 306
    11  ContactsUI                          0x000000011243ee6f -[CNContactPickerHostViewController pickerDidSelectContact:property:] + 95
    12  ContactsUI                          0x000000011243f5ec __71-[CNContactPickerExtensionHostContext pickerDidSelectContact:property:]_block_invoke + 66

我已经添加了NSContactsUsageDescription在 info.plist 中讨论iOS 10 beta 上的联系人地址簿崩溃 https://stackoverflow.com/questions/38326099/contact-address-book-crash-on-ios-10-beta但这没有帮助，我无法使用CNContactPickerViewController因为我需要支持iOS8设备。

伊姆兰·拉希姆

从 Erdekhayser 的解决方案（iOS 10 beta 上的联系人地址簿崩溃 https://stackoverflow.com/questions/38326099/contact-address-book-crash-on-ios-10-beta)

您可以使用此方法来检查 CNContactPickerViewController 是否可用？

if (NSClassFromString(@"CNContactPickerViewController")) {
        // iOS 9, 10, use CNContactPickerViewController
        CNContactPickerViewController *picker = [[CNContactPickerViewController alloc] init];
        picker.delegate = self;
        picker.displayedPropertyKeys = @[CNContactPhoneNumbersKey];
        [pr presentViewController:picker animated:YES completion:nil];
    }else{
        // iOS 8 Below, use ABPeoplePickerNavigationController
        ABPeoplePickerNavigationController *picker = [[ABPeoplePickerNavigationController alloc] init];
        picker.peoplePickerDelegate = self;
        [pr presentViewController:picker animated:YES completion:nil];
    }