SwiftUI：在 macOS 上共享 NSSharingService 未收到共享

Question

我有一个简单的测试应用程序，它尝试使用 NSSharingService 与另一个用户共享 CoreData 记录。我可以创建我的共享并且有效，

但是当我尝试接收共享时，它打开了应用程序但没有执行任何操作。

我已将 CKSharingSupported 添加到我的 plist。

我也跟着这个 link 无济于事： CloudKit CKShare userDidAcceptCloudKitShareWith Never Fires on Mac App

这是我的代码：

共享服务应用程序：

final class AppDelegate: NSObject, NSApplicationDelegate
{
    func application(_ application: NSApplication, userDidAcceptCloudKitShareWith metadata: CKShare.Metadata)
    {
        print ("userDidAcceptCloudKitShareWith")
        let shareStore = persistenceController.sharedPersistentStore!
        persistenceController.container.acceptShareInvitations(from: [metadata], into: shareStore)
        { _, error in
            if let error = error
            {
                print("acceptShareInvitation error :\(error)")
            }
        }
    }
}

内容视图：

import SwiftUI
import CoreData
import CloudKit

let persistenceController = PersistenceController()

struct ContentView: View {
    @Environment(\.managedObjectContext) private var viewContext

    @FetchRequest(
        sortDescriptors: [NSSortDescriptor(keyPath: \Item.timestamp, ascending: true)],
        animation: .default)
    private var items: FetchedResults<Item>

    var body: some View {
        NavigationView {
            List {
                ForEach(items) { item in
                    NavigationLink {
                        VStack
                        {
                            Text("Item at \(item.timestamp!, formatter: itemFormatter)")
                            Button("Share")
                            {
                                shareRecord(item: item)
                            }
                        }
                        
                    } label: {
                        Text(item.timestamp!, formatter: itemFormatter)
                    }
                }
            }
            .toolbar {
                ToolbarItem {
                    Button(action: addItem) {
                        Label("Add Item", systemImage: "plus")
                    }
                }
            }
            Text("Select an item")
        }
    }

    private func addItem() {
        withAnimation {
            let newItem = Item(context: viewContext)
            newItem.timestamp = Date()

            do {
                try viewContext.save()
            } catch {
                let nsError = error as NSError
                fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
            }
        }
    }
}

private let itemFormatter: DateFormatter = {
    let formatter = DateFormatter()
    formatter.dateStyle = .short
    formatter.timeStyle = .medium
    return formatter
}()

func shareRecord(item: Item)
{
    Task
    {
        if let share = await createShare(item: item)
        {
            let container = CKContainer(identifier: "iCloud.com.xxxxxxxx.sharingservice")
            
            let item = NSItemProvider()
            item.registerCloudKitShare(share, container: container)
            
            DispatchQueue.main.async
            {
                let sharingService = NSSharingService(named: .cloudSharing)
                sharingService!.perform(withItems: [item])
            }
        }
    }
}

private func createShare(item: Item) async -> CKShare?
{
    do
    {
        let (_, share, _) = try await persistenceController.container.share([item], to: nil)
        share[CKShare.SystemFieldKey.title] = "MyApp"
        return share
    }
    catch
    {
        print("Failed to create share")
        return nil
    }
}

Answer 1

好的，我终于成功调用了 userDidAcceptCloudKitShareWith。

您需要使用@NSApplicationDelegateAdaptor 为您的 SwiftUI 应用创建应用委托：

@main
struct Sharing_ServiceApp: App
{
    @NSApplicationDelegateAdaptor(AppDelegate.self) var appDelegate

    var body: some Scene
    {
        WindowGroup
        {
            ContentView()
                .environment(\.managedObjectContext, persistenceController.container.viewContext)
        }
    }
}

我输入该行，我的代码立即开始接收共享请求。

SwiftUI：在 macOS 上共享 NSSharingService 未收到共享

SwiftUI: Sharing NSSharingService on macOS not receiving share

macos

core-data

swiftui

ckshare

nssharingservice