I have a requirement to aggregate remote notifications of the same type.
example:
if a user received a push notification saying:"user 1 commented on your post", and then received "user 2 commented on your post", when receiving the second push I should remove the first notification and create a custom notification saying "2 users have commented on your post".
I'm getting the counter in the userInfo dictionary and I'm using NotificationService Extension in order to modify the notification's content.
the problem is I'm presenting 2 notifications:
"user 1 commented on your post"
"user 3 and 2 others have commented on your post"
instead of only the 2nd notification.
I've tried initializing UNNotificationRequest with custom identifier but still I'm getting double notifications (the original one and then the custom one).
UNUserNotificationCenter.current().removeDeliveredNotifications(withIdentifiers: ["push.comment"])
if let username = bestAttemptContent.userInfo["sender"] as? String,
let count = bestAttemptContent.userInfo["views_counter"] as? Int {
bestAttemptContent.title = "\(username) and \(count) others have commented on your post"
}
bestAttemptContent.body = "tap to see"
let request = UNNotificationRequest(identifier: "push.comment", content: bestAttemptContent, trigger: nil)
UNUserNotificationCenter.current().add(request, withCompletionHandler: nil)
I tried using available-content : 1 in the notification's payload, but I'm not able to modify the notification when the app is terminated (not in background/foreground).
Basically I want a similar behaviour to facebook's messenger app.
Any Suggestions?
Push Notifications grouping is a feature that is provided in Android applications, but it is impossible to achieve the same on iOS. Because it should be handled by operation system(in other case it will be not possible to achieve when app is closed or minimized) and iOS doesn't provide this support.
So I read in Apple's documentation that when setting content-available : 1 in the aps object it launches the app in a background mode and its possible to handle the received silent push.
its important to avoid setting the mutable-content : 1 and add background modes with remote notifications on in the apps configurations.
Related
I have a big problem, I set up (with great difficulty) push notifications on my iOS project. I decided to receive the data of the notification in the "didReceiveRemoteNotification" method of the "AppDelegate" then to create it programmatically (in order to carry out mandatory personal treatment). Everything works perfectly, only when I launch my application without the help of Xcode, I no longer receive the notifications, the notification creation code is not executed. I do not know what to do ...
func application(_ application: UIApplication,
didReceiveRemoteNotification userInfo: [AnyHashable: Any],
fetchCompletionHandler completionHandler: #escaping
(UIBackgroundFetchResult) -> Void) {
let body = userInfo["body"]
print(userInfo)
if #available(iOS 10.0, *) {
let content = UNMutableNotificationContent()
content.body = body! as! String
let trigger = UNTimeIntervalNotificationTrigger(timeInterval:
1, repeats: false)
let request = UNNotificationRequest(identifier: "idt", content:
content, trigger: trigger)
UNUserNotificationCenter.current().add(request,
withCompletionHandler: nil)
} else {
// Fallback on earlier versions
}
completionHandler(UIBackgroundFetchResult.newData)
}
Thanks you very much
When you launch your app from a notification you need to check the launchOptions in application:didFinishLaunchingWithOptions: to see if UIApplicationLaunchOptionsRemoteNotificationKey is present.
According to the Documentation:
The value of this key is an NSDictionary containing the payload of the remote notification. See the description of application:didReceiveRemoteNotification: for further information about handling remote notifications.
This key is also used to access the same value in the userInfo dictionary of the notification named UIApplicationDidFinishLaunchingNotification.
Once you determine that the launch contains a notification, invoke your notification handler method with the notification payload obtained from launchOptions.
What you have now, which is application(_:didReceiveRemoteNotification:) is only triggered when the app is already running:
If the app is running, the app calls this method to process incoming remote notifications. The userInfo dictionary contains the aps key whose value is another dictionary with the remaining notification
You need to check in your project settings/Capabilities - Background Modes - Remote notifications
Enable Remote notifications in Capabilities.
{
"aps" : {
"content-available" : 1,
"badge" : 0,
"Priority" : 10
},
"acme1" : "bar",
"acme2" : 42
}
The notification’s priority:
10 The push message is sent immediately.
The remote notification must trigger an alert, sound, or badge on the device. It is an error to use this priority for a push that contains only the content-available key.
https://developer.apple.com/library/archive/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/BinaryProviderAPI.html#//apple_ref/doc/uid/TP40008194-CH13-SW1
When the device is running and connected to Xcode, the system treats silent notifications as high-priority simply because the OS is smart enough to know "You must be debugging your app, so I will treat your app's tasks as high priority".
When the device is disconnected from Xcode, the system then treats silent notifications as low-priority. Therefore, it doesn't guarantee their delivery in order to improve battery life.
Is it possible to do something when the UserNotification message is delivered to the user every time?
let tdate = Date(timeIntervalSinceNow: 10)
let triggerDate = Calendar.current.dateComponents([.year,.month,.day,.hour,.minute,.second,], from: tdate)
let trigger = UNCalendarNotificationTrigger(dateMatching: triggerDate, repeats: true)
let identifier = "hk.edu.polyu.addiction.test"
let request = UNNotificationRequest(identifier: identifier, content: content, trigger: trigger)
UNUserNotificationCenter.current().removeAllPendingNotificationRequests()
UNUserNotificationCenter.current().add(request, withCompletionHandler: { (error) in
if error != nil {
debugPrint("center.add(request, withCompletionHandler: { (error)")
} else {
debugPrint("no error?! at request added place")
}
})
This is the code i did to deliver a notification when the user press a button. (i.e., after 10s, the notification appear to the user.)
Even the user not press on the notification, i want some variable of the app updated (assume the app is at the background).
Possible?
Or, as long as this notification is done. another new notification is scheduled, according to some calculations in my app, possible? (not fixed time, cannot use repeat)
Yes, it is possible! Need to modify the capabilities :
Enable background fetch in background mode.
Enable remote notification in background mode.
Implement delegate method : application:didReceiveRemoteNotification:fetchCompletionHandler:
This delegate method gets called when the notification arrives on the phone, so you can refresh your data.
When user taps on notification delegate method: didReceiveRemoteNotification
gets called and opens the app and user will get latest data in the app.
Apple API reference:
If your payload is not configured properly, the notification might be
displayed to the user instead of being delivered to your app in the
background. In your payload, make sure the following conditions are
true:
The payload’s aps dictionary must include the content-available key
with a value of 1. The payload’s aps dictionary must not contain the
alert, sound, or badge keys. When a silent notification is delivered
to the user’s device, iOS wakes up your app in the background and
gives it up to 30 seconds to run.
i have succesfully integrating react-native-fcm and
i am getting notification when i am sending from firebase console (in foreground,background,and killed state of app)
but when i am sending it from our server with custom data i cannot recieved when app is in (killed,background) state
i have also tried content-availble:true in data object
below is the notification data which i am sending
{
aps = {
"content-available" = 1;
};
body = "Get a free T-Shirt #WROGN on every purchase via Shopholix. T&C apply.";
"gcm.message_id" = "0:1475746605785619%9a4a567a9a4a567a";
"gcm.notification.data" = "{\"image\":\"http:\\/\\/res.cloudinary.com\\/saurabh\\/image\\/upload\\/v1469791885\\/media\\/yljgxgmfg1qbulxzwakm.png\",\"user_type\":\"all\",\"screen\":\"store\",\"id\":\"56d7e33ce69f7c8f06550002\",\"title\":\"Shopholix\",\"message\":\"Get a free T-Shirt #WROGN on every purchase via Shopholix. T&C apply.\",\"body\":\"Get a free T-Shirt #WROGN on every purchase via Shopholix. T&C apply.\"}";
"gcm.notification.priority" = high;
id = 56d7e33ce69f7c8f06550002;
image = "http://res.cloudinary.com/saurabh/image/upload/v1469791885/media/yljgxgmfg1qbulxzwakm.png";
message = "Get a free T-Shirt #WROGN on every purchase via Shopholix. T&C apply.";
screen = store;
title = Shopholix;
"user_type" = all;
}
Any help would be appreciated
Thanks,
Your content_available is set to 1. I'm pretty sure when using FCM, you should use true or false. Correct me if I'm reading your payload structure in a wrong way, but are you specifying the content_available separate from the GCM payload?
Also, the priority parameter should be outside the notification payload parameter.
See here for more details.
Were you able to resolve your issue?
Looking at the JSON, if it is exactly how you're sending it, then it is not well formed. All of the keys need to be strings surrounded by quotes. And each key-value pair needs to be comma-separated, not semi-colon.
I have in my app some notifications that you recive with GCM but every notification show in one target so when you get 2 or 3 notifications it makes annoying.
How to group all notifications in one target for my app? I think that will be like android, i have to identify the notification with some ID but i did not find any information about it.
Thats the code that execute when the app is in background:
// [START ack_message_reception]
func application( application: UIApplication,
didReceiveRemoteNotification userInfo: [NSObject :AnyObject]) {
print("Notification received: \(userInfo)")
// This works only if the app started the GCM service
GCMService.sharedInstance().appDidReceiveMessage(userInfo);
// Handle the received message
// [START_EXCLUDE]
NSNotificationCenter.defaultCenter().postNotificationName(messageKey, object: nil,
userInfo: userInfo)
// [END_EXCLUDE]
}
And the GCM message code is:
array( 'body' => 'Someone wants to practice with you !!!',
"sound" => "default",
"vibrate" => "1",
"time_to_live" => "1"
);
Thank you for your help.
I know this question was asked long ago but I am posting this answer it might help someone looking for the same solution. It is possible to group notifications at client side from iOS 12.
What you need to do is just to set one property and it will do all for you. Below is the explanation with example to do that.
UNMutableNotificationContent *content;
// Set all the properties like title, body etc. Here I am just going to explain how you can group notifications.
// Set property to group notifications
content.threadIdentifier = #"your group identifier";
Explanation: We have a property named threadIdentifier to group notifications, you just need to set this identifier to different unique group identifiers and iOS will handle the rest. It will show all the notifications having same identifier as one group.
Example: If we consider WhatsApp example they group messages notifications based on message sender, so we can set message sender number/identifier as threadIdentifier that's it.
content.threadIdentifier = #"messageSenderNumber"
Here is reference to Apple's guide for Using Grouped Notifications
Multiple notifications with the same collapse identifier are displayed to the user as a single notification. This can be handled from server side not at client side. APNS header apns-collapse-id will be used to update previously sent notification.
Refer to this for further description:
Table 8-2APNs request headers
Apple Developer Guide
I am using parse for push notification. Once I receive remote notification I pass it to the local notification, but issue is when screen is locked didReceiveRemoteNotification does not hit. I don't receive any notification.
I am using iOS8
Here's my payload:
{
CommentId = "8082a532-2380-4af5-bb3f-d247cfca519b";
CommentTitle = test; action = "com.lelafe.one4communities.Notifications.NotificationActivity";
aps = { };
moduleIdentifier = 8;
nTitle = "Comment posted by someone";
postingID = "c57a3d27-cfe5-41e9-a311-98a9fd7749ad";
}
There is one more parameter that you need to pass to your payload i.e. content-available and set its value to 1. It needs to be passed in case we wish that our app should receive notifications in the background.
The official documentation of parse describes this parameter as follows:
+content-available: (iOS only) If you are a writing a Newsstand app, or an app using the Remote Notification Background Mode introduced in iOS7 (a.k.a. "Background Push"), set this value to 1 to trigger a background download.
The problem is your dictionary aps:
Try checking out Apple's Documentation about The Notification Payload
Also Quoting #mamills answer:
If there is no badge, no alert, and no sound specified in the
dictionary (for the "aps" key) then a default message will not appear
and it will be completely silent.
Look again at example 5 in the document you referenced. aps can be
empty, and you can specify whatever custom data you would like as they
do with the "acme2" key. The "acme2" data is an example of where your
server's "special" payload could reside within the JSON payload.