ios - SWIFT:为什么我没有从 CloudKit 应用程序收到通知？

Question

这是我的代码:

        @IBAction func sendSweet(sender: AnyObject) {





    //delegate method




    let newSweet = CKRecord(recordType: "Extra1")
    newSweet["content"] = textField.text

    let publicData = CKContainer.defaultContainer().publicCloudDatabase
    publicData.saveRecord(newSweet, completionHandler: { (record:CKRecord?, error:NSError?) -> Void in
        if error == nil {
            dispatch_async(dispatch_get_main_queue(), { () -> Void in
                self.tableView.beginUpdates()
                self.sweets.insert(newSweet, atIndex: 0)
                let indexPath = NSIndexPath(forRow: 0, inSection: 0)
                self.tableView.insertRowsAtIndexPaths([indexPath], withRowAnimation: .Top)
                self.tableView.endUpdates()
                self.textField.text = ""
                self.textField.resignFirstResponder()



            })


        }})
    // Put the CloudKit private database in a constants
    let privateDatabase = CKContainer.defaultContainer().privateCloudDatabase

    // Create subscription and set three of its properties (an id, a predicate, and options)
    let friendsSubscription = CKSubscription(recordType: "Extra1",
        predicate: NSPredicate(format: "TRUEPREDICATE"),
        subscriptionID: "Extra1",
        options: .FiresOnRecordCreation)

    // Create a notification and set two of its properties (alertBody and shouldBadge)
    let notificationInfo = CKNotificationInfo()
    notificationInfo.alertBody = "New message in Lms Chat"
    notificationInfo.shouldBadge = false

    // Attach the notification to the subscription
    friendsSubscription.notificationInfo = notificationInfo

    // Save the subscription in the private database
    privateDatabase.saveSubscription(friendsSubscription) {recordReturned, error in
        // On the main thread, display an error/success message in the textView
        if error != nil {
            NSOperationQueue.mainQueue().addOperationWithBlock {
                self.textField.text = "Cloud error\n\(error!.localizedDescription)"
            }
        } else {
            NSOperationQueue.mainQueue().addOperationWithBlock {
                self.textField.text = ""
            }
        }
    }

}
func textFieldShouldEndEditing(textField: UITextField!) -> Bool {  //delegate method
    return false
}

func textFieldShouldReturn(textField: UITextField!) -> Bool {   //delegate method
    textField.resignFirstResponder()

    return true

}

这是一个消息应用程序，因此人们可以互相发送消息，但我也希望他们收到通知。这是通知的代码，我在 App Delegate 中也有一些通知的代码:

    import UIKit
    import CloudKit

    @UIApplicationMain
    class AppDelegate: UIResponder, UIApplicationDelegate {

var window: UIWindow?


func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {

    let notificationSettings = UIUserNotificationSettings(forTypes: [.Alert, .Badge, .Sound], categories: nil)

    UIApplication.sharedApplication().registerUserNotificationSettings(notificationSettings)

    UIApplication.sharedApplication().registerForRemoteNotifications()

    return true
}


func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {
    let cloudKitNotification = CKNotification(fromRemoteNotificationDictionary: userInfo as! [String:NSObject])

    if cloudKitNotification.notificationType == CKNotificationType.Query {
        dispatch_async(dispatch_get_main_queue(), { () -> Void in
            NSNotificationCenter.defaultCenter().postNotificationName("performReload", object: nil)
        })

    }

}

func resetBadge () {
    let badgeReset = CKModifyBadgeOperation(badgeValue: 0)
    badgeReset.modifyBadgeCompletionBlock = { (error) -> Void in
        if error == nil {
            UIApplication.sharedApplication().applicationIconBadgeNumber = 0
        }

    }

    CKContainer.defaultContainer().addOperation(badgeReset)
}


func applicationWillResignActive(application: UIApplication) {
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}

func applicationDidEnterBackground(application: UIApplication) {
    resetBadge()

}

func applicationWillEnterForeground(application: UIApplication) {
    dispatch_async(dispatch_get_main_queue(), { () -> Void in
        NSNotificationCenter.defaultCenter().postNotificationName("performReload", object: nil)
    })
}

func applicationDidBecomeActive(application: UIApplication) {
    resetBadge()
}

func applicationWillTerminate(application: UIApplication) {
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}

}

但是即使我拥有每次有人发送消息时发出通知所需的所有代码，通知也不会出现。我错过了什么吗？谢谢!

Answer 1

您正在向公共(public)数据库添加数据，但正在私有(private)数据库上创建订阅。需要更改这两者之一以匹配另一个。