User Notifications

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Push user-facing notifications to the user's device from a server or generate them locally from your app using User Notifications.

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/The notifications/test request was successful, but there were no notification messages from the Apple Store
requestUrl:https://api.storekit-sandbox.itunes.apple.com/inApps/v1/notifications/test method:Post responseCode:200 testNotificationToken:06beba6c-7587-44f6-a4b8-f12b11db6061_1745832671126 Request environment: ①APP from: TestFlight ②Apple acount : Sandbox account ③Apple originalTransactionId: 2000000907966801 App Store sandbox server notification configuration is fine(https://*.com/v2/apple_refund_notify), I have tried many times, but have not received any notification from Apple. Is this API not working?
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140
Apr ’25
Alternate App Icon Change Does Not Reflect in Notification Center on iOS 18.1+
Version: iOS 18.1 and later (works as expected on iOS 18.0 and earlier) Area: SpringBoard / Notification Center / App Icon Rendering Description: When changing the app's alternate icon using UIApplication.setAlternateIconName(_:completionHandler:), the icon is updated correctly on the Home Screen and App Switcher. However, in Notification Center, the old app icon is still shown for notifications, even after the change has completed. This issue only occurs on iOS 18.1 and later. In iOS 18.0 and earlier, Notification Center correctly reflects the updated icon. - Steps to reproduce: Create an iOS app with alternate app icons configured in the Info.plist. Use UIApplication.shared.setAlternateIconName("IconName") to change the icon at runtime. Send a notification. Pull down Notification Center and observe the icon shown beside the notification. - Expected Behavior: Notification Center should reflect the updated (alternate) app icon immediately after the change. - Actual Behavior: Notification Center continues to display the old (primary) app icon. The new icon appears correctly on the Home Screen and App Switcher. Restarting the device does cause Notification Center to update and reflect the correct icon, which suggests a cache or refresh issue in SpringBoard or Notification Center. - Notes: Issue introduced in iOS 18.1; not present in 18.0. Reproduces on both physical devices and simulators. Occurs with both scheduled local notifications and remote notifications. Restarting the device updates the Notification Center icon, but this is not a viable user-facing workaround.
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186
Apr ’25
Alternate App Icon Change Does Not Reflect in Notification Center on iOS 18.1+
When changing the app's alternate icon using UIApplication.setAlternateIconName(_:completionHandler:), the icon is updated correctly on the Home Screen and App Switcher. However, in Notification Center, the old app icon is still shown for notifications, even after the change has completed. Rebooting or change the device's language causes the correct icon to appear. This issue only occurs on iOS 18.1 and later. In iOS 18.0 and earlier, Notification Center correctly reflects the updated icon. Could you provide insights into how iOS caches notification icons and how we can force a refresh for all users?
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151
Apr ’25
Background Push Notifications for Emergency App Delayed Despite Critical Alert Entitlement
I’m using Appnotic from my server to send notifications for an emergency service, where it is critical that notifications are delivered immediately. My payload looks like this: "aps": { "alert": "Test alert", "sound": { "critical": 1, "name": "sound.wav", "volume": 0.5 }, "content-available": 1, "category": "alert" }, "topic": "com.fireservicerota.FSR-Primary-Alerting", "custom_payload": { "id": "11", "type": "alert", "incident_id": 23434, "incident_response_id": 2652343, "expiration_time": "2024-06-06T16:59:05+01:00" } } I already have the critical alert entitlement and background processing enabled. Everything seems fine when debugging, but I’m experiencing issues: • Some notifications never arrive • Around 60% of notifications arrive with noticeable delay Since this is an emergency app, delivery speed is crucial. What could be causing this inconsistency?
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134
Apr ’25
Push payload is not present on notification tap
I am checking if the user taps on the firebase push notification and get the payload. override func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) { let userInfo = response.notification.request.content.userInfo os_log("notification tapped %{public}@", log: OSLog.push, type: .info, userInfo) handleNotificationPayload(userInfo as! [String: AnyObject]) setFlutterLinkClickedVariable() } My use case is in app terminated state when push notification is tapped, get the link from payload and navigate to corresponding screen based on the link. This is working when there is only one push notification. When there are multiple push notifications with different links in the payload, only the first notification I tap works. Rest of the notifications just launches the app and does not navigate because the link is not set. I am getting the link from the payload and invoking flutter code which sets the link in the user defaults (shared preferences) and when the app launches in the home screen it checks for this variable and navigates accordingly. func handleNotificationPayload(_ payload: [String: AnyObject]) { if let link = payload["link"] as? String { setFlutterLinkVariable(link) } } override func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) { os_log("app did receive remote notification %{public}@", log: OSLog.push, type: .info, userInfo) handleNotificationPayload(userInfo as! [String : AnyObject]) completionHandler(.newData) } Currently when there is only one push notification it works because the link is set from the above method. The click delegate is not calling. I did set the delegate in application(:didFinishLaunchingWithOptions). UNUserNotificationCenter.current().delegate = self application.registerForRemoteNotifications() How to solve this issue? Thanks.
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Apr ’25
How to Maintain Background Connection with BLE-Triggered WebSocket Companion Hub for Real-Time Alerts on iOS
I’m building a companion app that connects to a custom hardware hub (IoT device) used for home safety monitoring. The hub is installed in homes and is responsible for triggering critical alerts like fire alarms, motion detection, door sensor activity, and baby monitor events. Current Architecture: The hub initially connects to the app via Bluetooth (BLE) for provisioning (to get Wi-Fi credentials). Once provisioned, the hub switches to Wi-Fi and communicates with the app via a WebSocket connection to stream real-time event updates. What I’m Trying to Achieve: My goal is to maintain background communication with the hub even when the app is not actively in use, in order to: Receive real-time updates from the hub while the device is locked or the app is in background. Trigger local notifications immediately when critical sensor events (e.g., fire, motion) occur. Ensure persistence across backgrounding, app swipes (force close), and device reboots, if possible. What I'm Observing: On iOS, WebSocket connection is suspended or dropped shortly after the app goes to the background or is locked. Even though the I've scheduled periodic fetches, notifications are delayed until the app is reopened, at which point all missed WebSocket messages arrive at once. If the app is force-closed or after reboot, no reconnection or notification happens at all. Key Questions I Have: Since the hub is initially provisioned via BLE, and could potentially send BLE flags or triggers for key events, can I use bluetooth-central mode to keep the app active or wake it up on BLE activity? Once the hub switches to Wi-Fi and uses WebSocket, is it possible to combine BLE triggers to wake the app and then reconnect to the WebSocket to fetch the full event payload? Is there a legitimate and App Store-compliant way to maintain a connection or background task with: BLE accessory triggers followed by Real-time data processing via Wi-Fi/WebSocket? Would this use case qualify as a "companion device" scenario under iOS background execution policies? What is the best practice for handling this kind of hybrid BLE + WebSocket alerting flow to ensure timely user notifications, even in background/locked/force-closed states? Any advice, documentation links, implementation patterns, or examples from similar companion device apps would be greatly appreciated. Thanks in advance!
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149
Apr ’25
Download and Store Custom Notification Sound for Playback in All App States (Foreground, Background, and Terminated)
I want to implement a feature where a custom notification sound file is downloaded from the server when the app is first launched and stored locally on the device. When a push notification arrives, the stored sound should be played in all app states, including foreground, background, and terminated (killed) state. Does anyone have an idea on how to implement this in iOS? Specifically, I am looking for guidance on: 1)Downloading and storing the sound file securely on the device. 2)Using the locally stored file for push notification sounds. 3)Ensuring the sound plays correctly in all states, including when the app is not running.
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111
Apr ’25
How do I manually associate an iOS app counterpart to my macOS app to deduplicate Notifications from iPhone?
Howdy, I'm trying to figure out how to replicate the following behavior for our app: The system is able to ascertain that the Mac equivalent of some iOS app is installed locally, and it prevents notifications from being mirrored. However, I am unable to determine how this association is inferred. When I check our iOS app under this prefpane, the switch remains enabled and toggleable—we'd like to act like Slack here. My initial assumption is that an app group containing both the Mac and iOS apps can be used to create the association; however, I would like to confirm that this is indeed the case before doing so. I'm not terribly confident about this. Details: The bundle identifiers of both apps do not match. This also applies to Slack; its iOS app is com.tinyspeck.chatlyio while its Mac app is com.tinyspeck.slackmacgap. In our case, the iOS app's identifier is like com.company.app while the Mac app's identifier is com.company.app.desktop. Both apps are signed with certificates that have matching team identifiers. The com.apple.developer.team-identifier entitlement is present on the Mac app. The Mac app shares a keychain access group with the iOS app. The Mac app is not sandboxed. The Mac app is an Electron app. The Mac app does not use APNs. It sends notifications "locally". I currently only have the iOS app installed on my iPhone via TestFlight, if that matters. Notification mirroring does work, but we'd like to forcibly disable this by associating the apps together. To my knowledge, the iOS app makes use of both a UNNotificationServiceExtension and a UNNotificationContentExtension. The iOS app currently doesn't have an assigned category (at least in Xcode). The Mac app is currently miscategorized as a developer tool (LSApplicationCategoryType = "public.app-category.developer-tools";), but that should be fixed. (Redacted) bundle information for the Mac app: CFBundleDisplayName = App; CFBundleExecutable = "App Desktop"; CFBundleName = App; Note that our CFBundleExecutable differs from the bundle's display name/name because we're currently migrating our users to a new version of the app that they'd likely want to live alongside the new one. The filename of the bundle itself is, similarly, App Desktop.app. For the iOS app, to my knowledge, the CFBundleName and CFBundleDisplayName are App.
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160
Mar ’25
Silent Push notifications - frequency permitted
Dear Apple support team, I have some questions for you about this topic: I'm designing an app that need to send a notification like a classic clock alarm timer to the user, let's say each and every 25 minutes of cellphone usage, ofc only if the device is being used. The thing is that when my app is put to background, then Apple will shut it down after 30-60secs. I was thinking to send a silent push notification to my app just so I can wake it up for an instant just so it can shoot a local notification, and then keep in the background totally inactive. That means I'll have to send to my app around 3 silent push notifications x hour. Do you think it is a problem for you? or it's ok to do that? Let me know your experience on this matters, Thanks a lot for your time, A.
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137
Mar ’25
Only the last notification is being delivered
Good morning all! We are facing a specific case dealing with push notifications to iOS devices. In my scenario: I turn off my device's internet Send multiple push notifications via server using Firebase. I turned ON my device's internet again. I only see the last push notification I sent. This is an expected scenario? There is any documentation that supports this statement? Thank you all!
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369
Mar ’25
Notification sound (Web or PWA)
Good morning fellow developers, For a while i am struggeling with providing sound to my users on IOS (Safari on Mac is no problem and every other device is not a problem) (we have an existing phone system and made a chat as well), the case is very simple: the notification sound is only for users who are logged in and online for chat. i have tried multiple things: Audio play with javascript (start with mute, play when user clicks a button so the sound is familiar, play when user clicks a button and directly pause it and continue when needed) PWA: the dashboard has been made available as pwa and notifications using google firebase. The popup does show for notifcations to be allowed (and receiving the notifications does work on any other device) But any IOS device cannot register. The information i find is that notifications were supported with 16.4 or higher but also have been deprecated around IOS 17, auto play is not allowed. We have an app in development for our product as well were we will have a notification which will handle this, but that is not the solution we can use now. Long story, short question: is it still somehow possible to push a notification to the user when using the PWA or play a sound in the browser (based on an ajax function). The app/website wont be in the background, so it will always be on the screen. Languages we use: html/javascript (mostly vanilla)/php
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102
Mar ’25
Periodic, seemingly global APNS disruptions
Hello, I'm from Microsoft team maintaining push notification api behind Teams platform. We are experiencing strange and short error spikes towards APNS that seem to mostly correlate worldwide. We checked the networking and push request code but could not find what could be causing this. These error spikes are all timeouts or connection resets (by remote host, ie. APNS servers) and seem to come and go randomly: Would it be possible to check this for outages or some other metrics on your side or investigate why would it happen? Since it's worldwide it seems unlikely it's something broken on our side. We are using the standard APNS http2 endpoint with modern support for all RFC features (so everything should work normally). Mind you, our api might be in a unique position because of the volume of notifications (in the billions per day).
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183
Mar ’25
Weather Notifications
I'm strugling about the way how to code notifications for my weather aplication. I use data from my server that receives weather changing values from my own weather station and want to notify user of my app when eg strong wind will blow or temperature go under eg 3℃ etc. The weather station has 8 sensors so there is sometimes a lot of data changing in particular minute that i set to parse data from server and notify user about it. But the notifications only works only when app is on and couple minutes after locking display. So please what could i use strategy for the app to works even when the app sleeps ?
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91
Mar ’25
getDeliveredNotifications does not return notifications triggered by UNLocationNotificationTrigger
I am trying to retrieve delivered notifications using UNUserNotificationCenter.getDeliveredNotifications(completionHandler:), but I have encountered an issue: Notifications triggered by UNTimeIntervalNotificationTrigger or UNCalendarNotificationTrigger appear in the delivered list. However, notifications triggered by UNLocationNotificationTrigger do not appear in the list. Here is the code I use to fetch delivered notifications: UNUserNotificationCenter.current().getDeliveredNotifications { notifications in for notification in notifications { print("Received notification: \(notification.request.identifier)") } } The notification is scheduled as follows: let center = UNUserNotificationCenter.current() let content = UNMutableNotificationContent() content.title = "Test Notification" content.body = "This is a location-based notification." content.sound = .default let coordinate = CLLocationCoordinate2D(latitude: 37.7749, longitude: -122.4194) // Example coordinates let region = CLCircularRegion(center: coordinate, radius: 100, identifier: "TestRegion") region.notifyOnEntry = true region.notifyOnExit = false let trigger = UNLocationNotificationTrigger(region: region, repeats: false) let request = UNNotificationRequest(identifier: "LocationTest", content: content, trigger: trigger) center.add(request) { error in if let error = error { print("Error adding notification: \(error.localizedDescription)") } } Why does getDeliveredNotifications not return notifications that were triggered using UNLocationNotificationTrigger? How can I retrieve such notifications after they have been delivered?
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Mar ’25
How can I check applicationState by tap anps push cards?
when I implementation the UNUserNotificationCenterDelegate func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) { var status = "" if (UIApplication.shared.applicationState == .active) { status = "active" } else if (UIApplication.shared.applicationState == .background) { status = "background" } else if (UIApplication.shared.applicationState == .inactive) { status = "inactive" } completionHandler() } I find that UIApplication.shared.applicationState == .background this case can not execute when application is in background。 why applicationState is inactive not background?
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198
Mar ’25
Push subscribe error User denied push permission
Hi, I am developing the Click & Read web add-on for Chromium, Firefox and Safari. We use xcrun safari-web-extension-converter tool to generate the Safari add-on, with up-to-date MacBook MacOS, Xcode et Safari : Sequoia 15.3.2, Safari Version 18.3.1 (20620.2.4.11.6), XCode Version 16.0 (16A242d). We have updated our addon to Manifest v3, having the Background script as Server Worker "background": { "service_worker": "background.js", "type": "module" } self.addEventListener("activate", (event) => { console.info("Service Worker activated", event); event.waitUntil( self.registration.pushManager .subscribe({ userVisibleOnly: true, applicationServerKey: urlBase64ToUint8Array( process.env.VAPID_PUBLIC_KEY ), }) .then(async (subscription) => { console.info("[Service Worker] Extension is subscribed to push"); const { subscription: savedSubscription } = await getLocalStorageKeyData("subscription"); if (savedSubscription) fetchApi({ url: `${API_SERVER_URL}/subscription/remove/${savedSubscription.keys.auth}`, }); // Remove previous subscription from server on addon activate currentBrowser.storage.local.set({ subscription: subscription.toJSON(), }); // Save subscription in local storage currentBrowser.runtime.setUninstallURL( `${API_SERVER_URL}/subscription/remove/${ subscription.toJSON().keys.auth }` ); // Set uninstall URL to remove notification subscription on addon uninstall fetchApi({ url: `${API_SERVER_URL}/subscription`, reqInit: { body: JSON.stringify(subscription.toJSON()), method: "POST", headers: { "Content-Type": "application/json", }, }, }); }) .catch((error) => { console.error("Push subscribe error: ", error); }) // Subscribe to push notifications ); }); When trying to subscribe the addon instance to our Push server, we get this error : Push subscribe error: NotAllowedError: User denied push permission Our NodeJS backend is using the web-push librabry : https://github.com/web-push-libs/web-push) to save subscriptions and make notifications push. By looking for same errors on forums, the best hint I found is that it could be related to the testing is done on localhost (addon is built from XCode onto Safari, and Push server is running on localhost). Thanks for your help !
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378
Mar ’25
UNNotificationRequest set timestamp to a relative time
The system calendar when showing a calendar event shows a relative timestamp on the notification versus all other apps which have a timestamp of when the notification was sent. Is there a way to set the timestamp to be relative? I am currently working on a calendar app and we should be able to use the same system that apple uses for its own calendar. Post about this on stack overflow from someone else a few years ago
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Mar ’25
Not able to receive silent pushes in background
I’ve developed the Pro Talkie app—a walkie-talkie solution designed to keep you connected with family and friends App Store: https://apps.apple.com/in/app/pro-talkie/id6742051063 Play Store: https://play.google.com/store/apps/details?id=com.protalkie.app While the app works flawlessly on Android and in the foreground on iOS, I’m facing issues with establishing connections when the app is in the background or terminated on iOS. Specifically, I’ve attempted the following: Silent pushes and alert payloads: These are intended to wake the app in the background, but they often fail—notifications may not be received or can be delayed by 20–30 minutes, leading to a poor user experience. VoIP pushes: These reliably wake the app, but they trigger the incoming call UI, which isn’t suitable for a walkie-talkie app that should connect directly without displaying a call screen. I’ve enabled all the necessary background modes (audio, remote notifications, VoIP, background fetch, processing), but the challenge remains. How can I ensure a consistent background connection on iOS without triggering the call UI?
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453
Mar ’25
MainActor and NSInternalInconsistencyException: 'Call must be made on main thread'
Hello, When attempting to assign the UNNotificationResponse to a Published property on the main thread inside UNUserNotificationCenterDelegate's method func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse) async both Task { @MainActor in } and await MainActor.run are throwing a NSInternalInconsistencyException: 'Call must be made on main thread'. I thought both of them were essentially doing the same thing, i.e. call their closure on the main thread. So why is this exception thrown? Is my understanding of the MainActor still incorrect, or is this a bug? Thank you Note: Task { await MainActor.run { ... } } and DispatchQueue.main.async don't throw any exception.
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4.0k
Feb ’25
Where can I find the documentation explaining behavioral differences in notification permission request windows across different versions?
I invoked the getNotificationSettingsWithCompletionHandler method of UNUserNotificationCenter on multiple test devices. After dismissing the notification permission request dialog (without explicit denial), the returned UNNotificationSettings object showed inconsistent authorizationStatus values across OS versions: ​**iOS 18:​ Returns UNAuthorizationStatusNotDetermined ​iOS 14.2:**​ Returns UNAuthorizationStatusDenied Where can I find official Apple documentation explaining this behavioral discrepancy between system versions?
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338
Feb ’25