具有Firebase的Xcode问题AppDelegate - 'NSPersistentCloudKitContainer‘

Question

这里是UIKit/SwiftUI的新手，现在我正在开发一个带有SwiftUI生命周期的UIKit应用程序，我遇到了这个问题

Cannot find type 'NSPersistentCloudKitContainer' in scope

守则是：

import UIKit
import Firebase

@main
class AppDelegate: UIResponder, UIApplicationDelegate {



    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        FirebaseApp.configure()
        return true
    }

    func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
        return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
    }

    func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
        //nothing
    }

    lazy var persistentContainer: NSPersistentCloudKitContainer = { **Here is problem**
        let container = NSPersistentCloudKitContainer(name: "app_Swiftui")
        container.loadPersistentStores(completionHandler: { (storeDescription, error) in
            if let error = error as NSError? {
                fatalError("Unresolved error \(error), \(error.userInfo)")
            }
        })
        return container
    }()

    func saveContext () {
        let context = persistentContainer.viewContext
        if context.hasChanges {
            do {
                try context.save()
            } catch {
                let nserror = error as NSError
                fatalError("Unresolved error \(nserror), \(nserror.userInfo)")
            }
        }
    }

}

每次我的构建都失败了，我得到了这个错误。有人能帮我吗？

Answer 1

NSPersistendCloudKitContainer是一个CoreData类。

import CoreData和你会在路上的！

Answer 2

给你：

NSPersistentCloudKitContainer是NSPersistentContainer的子类，能够管理CloudKit支持的和非云存储。

所以这是核心数据！

庄家在上面：

import CoreData

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