swift - Using Cloudkit with Apple Watch

Question

Like the Title says, I would like to use Cloudkit with the Apple Watch to fetch information and list the names of items I have stored in the private field. However, whenever I run the code I just get a blank screen and I am not sure why. When I change the identifier for the container it throws an error that it cannot make a connection leading me to think there is some connection going on but that it is getting hung somewhere, here is my code for the project:

Most of this code is followed from a guide that I found, but it does not seem to work on the Apple Watch and I am not sure why as there seem to be barely any guides or documentation on this.

struct CloudKitHelper {
    // MARK: - record types
        struct RecordType {
            static let Plants = "CD_Plant"
        }
        
        // MARK: - errors
        enum CloudKitHelperError: Error {
            case recordFailure
            case recordIDFailure
            case castFailure
            case cursorFailure
        }
    
    static func getRecords(completion: @escaping (Result<ListElement, Error>) -> ()) {
            let pred = NSPredicate(value: true)
            let sort = NSSortDescriptor(key: "CD_identifier", ascending: false)
            let query = CKQuery(recordType: RecordType.Plants, predicate: pred)
            query.sortDescriptors = [sort]

            let operation = CKQueryOperation(query: query)
            operation.desiredKeys = ["CD_identifier"]
            operation.resultsLimit = 50
            
            operation.recordFetchedBlock = { record in
                DispatchQueue.main.async {
                    guard let recordID = record["CD_identifier"] as? String else { return }
                    guard let name = record["CD_name"] as? String else { return }
                    guard let lastWaterDate = record["CD_lastWateringDate"] as? Date else { return }
                    guard let lastFertDate = record["CD_lastFertDate"] as? Date else { return }
                    guard let watering = record["CD_watering"] as? Int64 else { return }
                    guard let fertilizing = record["CD_fertilize"] as? Int64 else { return }
                    let listElement = ListElement(recordID: recordID, name: name, lastWaterDate: lastWaterDate, lastFertDate: lastFertDate, watering: watering, fertilizing: fertilizing)
                    completion(.success(listElement))
                }
            }
            
            operation.queryCompletionBlock = { (/*cursor*/ _, err) in
                DispatchQueue.main.async {
                    if let err = err {
                        completion(.failure(err))
                        return
                    }
    //                guard let cursor = cursor else {
    //                    completion(.failure(CloudKitHelperError.cursorFailure))
    //                    return
    //                }
    //                print("Cursor: (String(describing: cursor))")
                }
                
            }
            
        CKContainer(identifier: "iCloud.com.base.identifier").privateCloudDatabase.add(operation)
    }
    
}

Here is the content view that I am using:

'''

import SwiftUI

struct ContentView: View {
    
    @EnvironmentObject var listElements: ListElements
    @State private var newItem = ListElement(name: "", lastWaterDate: Date.distantPast, lastFertDate: Date.distantPast, watering: 0, fertilizing: 0)
    @State private var editedItem = ListElement(name: "", lastWaterDate: Date.distantPast, lastFertDate: Date.distantPast, watering: 0, fertilizing: 0)
    
    var body: some View {
        NavigationView{
            VStack{
                List(listElements.items) { item in
                    HStack{
                        Text("Plant Name: (item.name)")
                    }
                }
            }
            .onAppear {
                // MARK: - Fetch From Cloudkit
                CloudKitHelper.getRecords { (result) in
                    switch result {
                    case .success(let newItem):
                        self.listElements.items.append(newItem)
                        print("Successfully Fetched Item.")
                    case .failure(let err):
                        print(err.localizedDescription)
                    }
                }
            }
        }
    }
}

'''

question from:https://stackoverflow.com/questions/65945674/using-cloudkit-with-apple-watch

Answer 1

(Sorry, not able to write into the comment section) I have the exact same issue! So glad I'm not alone. I just received the same answer to "Change the operation to a CKFetchRecordsOperation and the queryCompletionBlock to a fetchRecordsCompletionBlock." by John Elemans. I have no clue how to do that and I don't find any tutorial on that.

Can someone please specify that?