如何使用CloudKit的CKShare创建共享？

Question

我正在研究苹果今年发布的新CKShare，我对它有一些疑问。我试图跟随WWDC的“CloudKit中的新内容”视频，但部分代码在Xcode中不再起作用。

我想做的是:用户将输入他的名字和电话，在点击UIButton后，将与一个特定的人共享。以下是代码：

class ViewController: UIViewController, UICloudSharingControllerDelegate {
    @IBOutlet weak var nome: UITextField!
    @IBOutlet weak var telefone: UITextField!
    @IBOutlet weak var button: UIButton!

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    @IBAction func send(_ sender: AnyObject) {
        print("Send button was clicked.\n")

        let elder = CKRecord(recordType: "Elder")
        elder["name"] = self.name.text as CKRecordValue?
        elder["telephone"] = self.telephone.text as CKRecordValue?

        let ckContainer = CKContainer.default()
        let shareRecord = CKShare(rootRecord: elder)

        shareRecord[CKShareTitleKey] = "Elder" as CKRecordValue?

        let shareController = UICloudSharingController(share: shareRecord, container: ckContainer)
        shareController.delegate = self
        shareController.availablePermissions = [.allowReadOnly]
        shareController.popoverPresentationController?.sourceView = self.button

        self.present(shareController, animated: true)
    }

    func cloudSharingController(_ csc: UICloudSharingController, failedToSaveShareWithError error: Error) {
        print("PROBLEM SAVING SHARE")
    }

    func cloudSharingControllerDidSaveShare(_ csc: UICloudSharingController) {
        print("SHARE SAVED")
    }

    func itemTitle(for csc: UICloudSharingController) -> String? {
        return "a"   //don't know what this is for
    }
}

我的应用程序一直在打印“问题保存共享”，即使CloudSharingController出现了。而且，CKRecord长者没有出现在CloudKit的仪表板上。

Answer 1

所以我想出了什么问题..。我使用的是云工具包为您创建的默认区域，在使用CKShare时您不能这样做。您所要做的就是创建一个私有的自定义CKZone，并在其中保存CKRecord和CKShare！

Answer 2

我被告知，只有在已创建共享的情况下，才能使用您选择使用的初始化器。对于新股，请使用备用init。

试试下面的代码：

let csc = UICloudSharingController { controller,
        preparationCompletionHandler in
        let share = CKShare(rootRecord: elder)

        let mro = CKModifyRecordsOperation(
            recordsToSave: [elder, share],
            recordIDsToDelete: nil)


        mro.modifyRecordsCompletionBlock = {
            records, recordIDs, error in
            if error != nil {
                    //handle error
            }
            preparationCompletionHandler(share,CKContainer.default(), error)
        }
        myDB.add(mro)
    }

    csc.delegate = self
    self.present(csc, animated:true, completion:nil)