CloudCore

open class CloudCore

Main framework class, in most cases you will use only methods from this class, all methods and properties are static.

Save to cloud

On application inialization call CloudCore.enable(persistentContainer:) method, so framework will automatically monitor changes at Core Data and upload it to iCloud.

Example

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Register for push notifications about changes
    application.registerForRemoteNotifications()

    // Enable CloudCore syncing
    CloudCore.delegate = someDelegate // it is recommended to set delegate to track errors
    CloudCore.enable(persistentContainer: persistentContainer)

    return true
}

Fetch from cloud

When CloudKit data is changed push notification is posted to an application. You need to handle it and fetch changed data from CloudKit with CloudCore.fetchAndSave(using:to:error:completion:) method.

Example

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
    // Check if it CloudKit's and CloudCore notification
    if CloudCore.isCloudCoreNotification(withUserInfo: userInfo) {
        // Fetch changed data from iCloud
        CloudCore.fetchAndSave(using: userInfo, to: persistentContainer, error: nil, completion: { (fetchResult) in
            completionHandler(fetchResult.uiBackgroundFetchResult)
        })
    }
}

You can also check for updated data at CloudKit manually (e.g. push notifications are not working). Use for that CloudCore.fetchAndSave(to:error:completion:)