CloudKit CKShare userDidAcceptCloudKitShareWith Never Fires on Mac App

问题

I am working on accepting a CKShare in a macOS app in Swift 4. I've already done all the following:

• Create the CKShare and save it with its rootRecord to CloudKit
• Add a participant (CKShare.Participant)
• I've confirmed that the CKShare is on the CloudKit server and that the person I invited has access to it. Here's a screenshot: https://d.pr/i/0sMFQq

When I click the share link associated with the CKShare, it opens my app, but nothing happens and userDidAcceptCloudKitShareWith doesn't fire.

func application(_ application: NSApplication, userDidAcceptCloudKitShareWith metadata: CKShareMetadata) {
  print("Made it!") //<-- This never gets logged :(
  let shareOperation = CKAcceptSharesOperation(shareMetadatas: [metadata])
  shareOperation.qualityOfService = .userInteractive

  shareOperation.perShareCompletionBlock = {meta, share, error in
    print("meta \(meta)\nshare \(share)\nerror \(error)")
  }
  shareOperation.acceptSharesCompletionBlock = { error in
    if let error = error{
      print("error in accept share completion \(error)")
    }else{
      //Send your user to where they need to go in your app
      print("successful share:\n\(metadata)")
    }
  }

  CKContainer.default().add(shareOperation)
}

Is there some kind of URL scheme I have to include in my info.plist? Or perhaps a protocol I need to conform to in my NSApplicationDelegate delegate? I can't, for the life of me, figure out what to do. Thanks in advance!

Update

I've tried a few more things on this. When I open the share link in a web browser, I see this:

Clicking OK makes the screen fade away to this:

Not particularly helpful. :) After doing this, the participant's status in CloudKit is still Invited, so the share still hasn't been accepted.

When I click on a share link within Messages, I am shown a popup like this: After I click open, a new copy of my app shows up in the dock, then the app suddenly closes. The crash log states:

Terminating app due to uncaught exception 'CKException', reason: 'The application is missing required entitlement com.apple.developer.icloud-services'

I've tried turning iCloud off and on again in the Capabilities section of Xcode, but nothing changes. I know this exception can't be right because I can start my app normally and use CloudKit all day long. Only the CKShare causes this crash.

This is a mess. Save me, Obi-wan Kenobi, you're my only hope.

回答1:

Yes,

You need to add this to your info.plist.

<key>CKSharingSupported</key>
<true/>

** EDITED ANSWER **

I use this code to share, I don't do it manually... not sure if this is an option under OS X I must confess. I am using iOS.

let share = CKShare(rootRecord: record2S!)
share[CKShareTitleKey] = "My Next Share" as CKRecordValue
share.publicPermission = .none

let sharingController = UICloudSharingController(preparationHandler: {(UICloudSharingController, handler:
                    @escaping (CKShare?, CKContainer?, Error?) -> Void) in
let modifyOp = CKModifyRecordsOperation(recordsToSave:
                        [record2S!, share], recordIDsToDelete: nil)
modifyOp.savePolicy = .allKeys
modifyOp.modifyRecordsCompletionBlock = { (record, recordID,
                        error) in
                        handler(share, CKContainer.default(), error)
                    }
                    CKContainer.default().privateCloudDatabase.add(modifyOp)
                })
sharingController.availablePermissions = [.allowReadWrite,
                                                          .allowPrivate]
sharingController.delegate = self
                sharingController.popoverPresentationController?.sourceView = self.view
            DispatchQueue.main.async {
                self.present(sharingController, animated:true, completion:nil)
            }

This presents an activity controller in which you can choose say email and then send a link. You might also want to watch this video, focus on cloudKit JS right at the beginning.

Watch this WWDC video too https://developer.apple.com/videos/play/wwdc2015/710/ It talks about the cloudkit JSON API, using it you can query what has and what hasn't been shared in a terminal window/simple script perhaps. I did the same when using dropbox API a few years back. Hey you can even use the cloudkit JSON API within your code in place of the native calls.

回答2:

I finally got it to work! I did all of the following:

1. Deleted my app from ~/Library/Developer/Excode/DerivedData
2. Made sure I had no other copies of my app archived anywhere on my machine.
3. Said a prayer.
4. Rebooted.

Sheesh, that was rough. :)

来源：https://stackoverflow.com/questions/50827303/cloudkit-ckshare-userdidacceptcloudkitsharewith-never-fires-on-mac-app