Notifications with Swift 2 and Cloudkit - ios

Question

I am making a "texting app" you can call it and it uses cloudkit and I have been looking everywhere to add notifications that work with cloudkit... Would someone be able to tell me the code to add push notifications for cloudkit in detail because I am very lost... Also I wan't the notifications to go to different "texting rooms" (in cloudkit it would be record types...) For instance I have one record type called "text" and another one called "text 2" I don't want notifications from "text" to get to people who use "text2" and vise versa.

Answer 1

Using Swift 2.0 with El Captain & Xcode 7.2.1
Elia, You need to add this to your app delegate. Which will arrive in a userInfo packet of data, which you can then parse to see which database/app sent it.
UIApplicationDelegate to the class
application.registerForRemoteNotifications() to the
func application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
Than this method
func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {
let notification = CKQueryNotification(fromRemoteNotificationDictionary: userInfo as! [String : NSObject])
let container = CKContainer(identifier: "iCloud.com")
let publicDB = container.publicCloudDatabase
if notification.notificationType == .Query {
let queryNotification = notification as! CKQueryNotification
if queryNotification.queryNotificationReason == .RecordUpdated {
print("queryNotification.recordID \(queryNotification.recordID)")
// Your notification
}
}
print("userInfo \(userInfo["ck"])")
NSNotificationCenter.defaultCenter().postNotificationName("NotificationIdentifier", object: self, userInfo:dataDict)
}
}
}
}
}
That'll get you started.
You can use this method to check your subscriptions programmatically, of course while your developing you can use the dashboard.
func fetchSubsInPlace() {
let container = CKContainer(identifier: "iCloud.com")
let publicDB = container.publicCloudDatabase
publicDB.fetchAllSubscriptionsWithCompletionHandler({subscriptions, error in
for subscriptionObject in subscriptions! {
let subscription: CKSubscription = subscriptionObject as CKSubscription
print("subscription \(subscription)")
}
})
}
And finally when you got it; you can this routine to ensure you capture any subscriptions you missed while your app was sleeping and make sure that subscriptions don't go to all your devices, once you treated them too.
func fetchNotificationChanges() {
let operation = CKFetchNotificationChangesOperation(previousServerChangeToken: nil)
var notificationIDsToMarkRead = [CKNotificationID]()
operation.notificationChangedBlock = { (notification: CKNotification) -> Void in
// Process each notification received
if notification.notificationType == .Query {
let queryNotification = notification as! CKQueryNotification
let reason = queryNotification.queryNotificationReason
let recordID = queryNotification.recordID
print("reason \(reason)")
print("recordID \(recordID)")
// Do your process here depending on the reason of the change
// Add the notification id to the array of processed notifications to mark them as read
notificationIDsToMarkRead.append(queryNotification.notificationID!)
}
}
operation.fetchNotificationChangesCompletionBlock = { (serverChangeToken: CKServerChangeToken?, operationError: NSError?) -> Void in
guard operationError == nil else {
// Handle the error here
return
}
// Mark the notifications as read to avoid processing them again
let markOperation = CKMarkNotificationsReadOperation(notificationIDsToMarkRead: notificationIDsToMarkRead)
markOperation.markNotificationsReadCompletionBlock = { (notificationIDsMarkedRead: [CKNotificationID]?, operationError: NSError?) -> Void in
guard operationError == nil else {
// Handle the error here
return
}
}
let operationQueue = NSOperationQueue()
operationQueue.addOperation(markOperation)
}
let operationQueue = NSOperationQueue()
operationQueue.addOperation(operation)
}
}