When sending multiple push to start notifications to start a live activities in a short time frame, after around 10 pushes live activities are no longer being started.
Device logs show the following entry:
Push-to-start budget exceeded for com.att.tlv.myatt::pushToStart; not starting activity
What can be done to be able to open more live activities via push-to-start in a short time frame (increase the push-to-start budget)?
Can this be related to the development environment and it will not happen on production?
NSSupportsLiveActivitiesFrequentUpdates is already set to YES
Widgets & Live Activities
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Just wanted to clarify some expected behaviors here. It seems that there are two distinct behaviors for Live Activity flows for freshly installed apps.
When you start a Live Activity for the first time and the user hasn't yet clicked on Allow/Don't Allow in the activity interface, there are two different sequences:
Starting a Live Activity locally
Request a Live Activity locally via Swift
Live Activity starts
.pushTokenUpdates is immediately triggered, even if the Allow/Don't Allow buttons appear under the Activity UI
Starting a Live Activity via push-to-start
Send a push-to-start notification to launch a Live Activity
Live Activity starts
.pushTokenUpdates is not triggered, and .pushToken returns nil.
If a user clicks on Allow in the Activity UI, only then is .pushTokenUpdates triggered.
I have developed a Widget Extension with editable dynamic options.
`struct ModelQuery: EntityStringQuery {
public var allModels:[ModelEntity] {
// from App Groups UserDefaults
let models = SharedDataManager.getModelList()
// 检查原始数据是否为空,避免转换后的数据异常
guard !models.isEmpty else {
return []
}
let entites = models.map{ModelEntity(from: $0)}
return entites
}
func entities(for identifiers: [ModelEntity.ID]) async throws -> [ModelEntity] {
let models = allModels
if models.isEmpty {
return []
}
// 尝试匹配ID
let matchedEntities = identifiers.compactMap { id in
models.first { $0.id == id }
}
// 如果没有匹配到任何实体,返回默认的第一个站点
if matchedEntities.isEmpty && !models.isEmpty {
return [models[0]]
}
return matchedEntities
}
func entities(matching string: String) async throws -> [ModelEntity] {
let stations = allModels
if stations.isEmpty {
return []
}
if string.isEmpty {
return stations
}
let lowercasedString = string.lowercased()
let filteredStations = stations.filter { station in
station.name.lowercased().contains(lowercasedString)
}
if filteredStations.isEmpty {
return []
}
return filteredStations
}
func suggestedEntities() async throws -> [ModelEntity] {
return allModels
}
}`
Below is how it looks when functioning properly
However, when I tested it on iOS 26, occasional "Failed to Load" errors or unknown errors occurred. The same issues did not appear on iOS 17 or iOS 18.
I submitted a Feedback FB19925261 with a demo project two months ago, but it’s still marked as Open. The issue still persists in Xcode 26.1 + watchOS 26.1. Could someone kindly take a look at the status of this Feedback?
Hey!
I'm working on enabling remotely started live activities. I'm running into 2 crashes:
Upon initializing ActivityAuthorizationInfo
Upon calling Activity<...>.activities array
Both stack traces look like this:
0 libsystem_kernel.dylib +0xce0 _mach_msg2_trap
1 libsystem_kernel.dylib +0x4398 _mach_msg2_internal
2 libsystem_kernel.dylib +0x42b4 _mach_msg_overwrite
3 libsystem_kernel.dylib +0x40fc _mach_msg
4 libdispatch.dylib +0x1cc04 __dispatch_mach_send_and_wait_for_reply
5 libdispatch.dylib +0x1cfa4 _dispatch_mach_send_with_result_and_wait_for_reply
6 libxpc.dylib +0x107ec _xpc_connection_send_message_with_reply_sync
7 BoardServices +0xaea8 -[BSXPCServiceConnectionMessage _sendWithMode:]
8 BoardServices +0x17938 -[BSXPCServiceConnectionMessage sendSynchronouslyWithError:]
9 BoardServices +0xeef0 ___71+[BSXPCServiceConnectionProxy createImplementationOfProtocol:forClass:]_block_invoke
They happen to a limited number of users, but not insignificant. Most are on iOS 18.6.2 and iOS 26.1, but there are others in the mix. I don't have a repro myself. It looks like the main thread gets blocked after we receive no response from these ActivityKit APIs. Both of these are called inside application:didFinishLaunchingWithOptions:.
For ActivityAuthorizationInfo, we need the app to communicate with the server whether the user has live activities enabled; hence, calling this object's init as early as possible in the app.
For activities array, I'd like to do some logging whenever the live activity is started or ended (for example, if activities array no longer contains any activities, we can log the activity as dismissed). For this logging to happen, as far as I understand, it has to happen inside didFinishLaunchingWithOptions since this is the only method being called upon the terminated app receiving background runtime when the live activity starts/ends remotely.
After some research, one potential reason is ActivityKit APIs are just not ready to return values via xpc connection at app startup, so moving these methods to applicationDidBecomeActive could resolve the problem. That's fine for ActivityAuthorizationInfo init, but for accessing activities, there is no other place in the lifecycle to see if an activity has been dismissed (especially in the scenario where app is terminated, so we get only 30 seconds ish of background runtime).
Curious if anyone has run into this or has any insights into ActivityKit API behavior.
I've been implemented App Shortcuts into my apps which are localized for a variety of languages.
The WWDC23 "Spotlight your app with App Shortcuts" has been extremely helpful in resolving my localized trigger phrases issue, but before I continue filling out all of the trigger phrases for my application I am concerned about a limitation that was mention in the video and need some additional information about it.
The limitations noted in the video at minute mark 21:26 states that:
Maximum 10 App Shortcuts (OK)
Maximum 1000 trigger phrases...
If I have 1 app and 10 shortcuts, and each shortcut only uses (.applicationName), this means I get to have 100 trigger phrases for each shortcut (for the sake of the discussion).
What I'm unsure about is when I begin providing localization do the localized triggered phrases count toward the trigger phrase limit? Essentially, for every language I support do I have to drop 1/2 of all of my trigger phrases to stay under the limit?
At the moment, my app is supporting 40 languages and I would like to know how localization affects the trigger phrase limit.
Thank you!
Topic:
App & System Services
SubTopic:
Widgets & Live Activities
Tags:
Shortcuts
Intents
App Intents
I configured my app to show a Live Activity when an alarm rings using AlarmKit. However, if I dismiss the Live Activity by tapping somewhere other than the X button, and then long-press the Dynamic Island, a new Live Activity appears that is long but contains no information.
Currently, the only way I can remove this empty Live Activity is to press the X button while the alarm is in the snooze state. Pressing the X button on the initial alarm does not remove it.
Is there any way to prevent this behavior or properly handle / clean up this empty Live Activity?
There seems to be a long running issue with WidgetKit where some users don't see the widget when trying to add to their Home Screen. (even after opening the app for the first time).
I have been able to reproduce myself intermittently, and typically restarting the phone or re-installing the app fixes the problem. However, some of my users have encountered this and end up requesting refunds because they think the app is broken.
Has anybody else experienced this issue?
Would be great to get this bug resolved as it's frustrating for users.
I would like to add a Live Activity to my app, but unfortunately I always get an error message. When I go into the Identifiers via the Developer Portal and look at my app, there is no Activity Kit or Live Activity in the Capabilites that I could activate. In XCode I don't see the option for Signing & Capabilities either... Can anyone help me how to add this correctly? Thanks in advance!
Topic:
App & System Services
SubTopic:
Widgets & Live Activities
I would like to add a Live Activity to my app, but unfortunately I always get an error message. When I go into the Identifiers via the Developer Portal and look at my app, there is no Activity Kit or Live Activity in the Capabilites that I could activate. In XCode I don't see the option for Signing & Capabilities either... Can anyone help me how to add this correctly? Thanks in advance!
I'm developing a widget with WidgetKit, and I'm having a problem: I need to click on an image, and when I click it triggers a network request, the image automatically rotates clockwise, and when the network ends, the image automatically stops rotating. How to do that?
My current idea is to click on the image and await the call to the network request. Should Toggle be used for the control corresponding to the picture? Because Toggle has two states. Then there is how to do image rotation, did not find support API.
Do we need to include a 1x, 2x, and 3x version of each asset shown on the widget? Can we instead just supply a single 3x version and have the system display this for all device types? We are concerned about our growing app size
Device: iPhone 16 Pro
iOS version: 18.3.2
The calendar widget (on home screen) is displaying "No more events today" even though there is an appointment scheduled later in the evening on the same day.
I have looked through all the settings and nothing seems to work. How do I get it to display events that are on the calendar for rest of the day today.
It does correctly display events that are upcoming tomorrow and next week.
Thanks,
-Harry
Hello,
We are using the Firebase Admin SDK (firebase-admin framework) to send push notifications via Firebase Cloud Messaging (FCM) for Live Activity updates in our iOS app.
With the introduction of iOS 18, a new key "input-push-token": 1 has been added to the Live Activities push payload structure.
1) Can this new key ("input-push-token": 1) be used when sending payloads via FCM?
We noticed that FCM is still using the push update format introduced in iOS 17.2. Will FCM be updated to support the new push structure introduced with iOS 18? Or is the "input-push-token" feature only available when sending notifications via direct APNs?
2) We are concerned about the expiration of the Live Activity start push token.
If a user doesn't open the app for a long time, the token may expire, and this could result in failed updates. That’s why we are looking into the new "input-push-token" behavior in iOS 18.
Do you have any recommendations on how to manage or prevent token expiration?
Is there any official guidance on the lifespan of the Live Activity push tokens?
Will FCM support the delivery of start/update/end Live Activity actions even when the app is completely terminated?
We would highly appreciate any official clarification or roadmap regarding this. It would help us determine whether we should wait for FCM support or switch to sending notifications directly via APNs.
Thank you for your help!
In our widget we include a button with an intent, making a network call to refresh some shared data in its perform(). Whether the call finishes in time or not is not important to us, what matters more is that the widget gets reloaded at the end and displays whatever data it has available with its transition animation.
On iOS18.0 we see the widget being reloaded but on the latest version 18.4 this doesn't happen anymore.
Going through the logs, on both devices we see this same flow:
default 2025-04-10 15:05:26.853674 +0300 WidgetRenderer_Default Evaluating dispatch of UIEvent: 0x300e002a0; type: 0; subtype: 0; backing type: 11; shouldSend: 1; ignoreInteractionEvents: 0, systemGestureStateChange: 0
default 2025-04-10 15:05:26.853691 +0300 WidgetRenderer_Default Sending UIEvent type: 0; subtype: 0; to windows: 1
default 2025-04-10 15:05:26.853702 +0300 WidgetRenderer_Default Sending UIEvent type: 0; subtype: 0; to window: <WidgetRenderer.WidgetWindow: 0x5689b4000>; contextId: 0x8E401B8A
default 2025-04-10 15:05:26.853735 +0300 SpringBoard Evaluating dispatch of UIEvent: 0x300af9420; type: 0; subtype: 0; backing type: 11; shouldSend: 1; ignoreInteractionEvents: 0, systemGestureStateChange: 0
default 2025-04-10 15:05:26.853836 +0300 SpringBoard Sending UIEvent type: 0; subtype: 0; to windows: 1
default 2025-04-10 15:05:26.853864 +0300 SpringBoard Sending UIEvent type: 0; subtype: 0; to window: <_UISystemGestureWindow: 0xb5a20d000>; contextId: 0x5A4C4C23
default 2025-04-10 15:05:26.854862 +0300 SpringBoard Evaluating dispatch of UIEvent: 0x300aeeca0; type: 0; subtype: 0; backing type: 11; shouldSend: 1; ignoreInteractionEvents: 0, systemGestureStateChange: 0
default 2025-04-10 15:05:26.854866 +0300 WidgetRenderer_Default [Timeline[<edited-bundle-identifier>::<edited-bundle-identifier>.<Widget>:widget:systemMedium::321.00/148.00/20.20:(null)]--A76785AED3F9::0xb5bc4c000)] Handle action
default 2025-04-10 15:05:26.854892 +0300 SpringBoard Sending UIEvent type: 0; subtype: 0; to windows: 1
default 2025-04-10 15:05:26.854901 +0300 SpringBoard Sending UIEvent type: 0; subtype: 0; to window: <SBHomeScreenWindow: 0xb5ad60000>; contextId: 0x71D69FA2
default 2025-04-10 15:05:26.855015 +0300 WidgetRenderer_Default Handle action: <private>
default 2025-04-10 15:05:26.855360 +0300 SpringBoard Allowing tap for icon view '<private>'
default 2025-04-10 15:05:26.855376 +0300 SpringBoard Not allowing tap gesture to begin because we're not editing, the custom view controller's user interaction is enabled, and the effective icon alpha isn't zero.
default 2025-04-10 15:05:26.856940 +0300 SpringBoard Icon touch ended: <private>
default 2025-04-10 15:05:26.857474 +0300 backboardd contact 1 presence: none
default 2025-04-10 15:05:26.857826 +0300 chronod Received action <private> for interaction <WidgetRenderSession--4632871937259503361-scene::C1F20222-CC99-45CC-B074-A76785AED3F9::0xb5bc4c000-[<edited-bundle-identifier>::<edited-bundle-identifier>.<Widget>:widget:systemMedium::321.00/148.00/20.20:(null)]>
default 2025-04-10 15:05:26.858381 +0300 chronod [<WidgetRenderSession--4632871937259503361-scene::C1F20222-CC99-45CC-B074-A76785AED3F9::0xb5bc4c000-[<edited-bundle-identifier>::<edited-bundle-identifier>.<Widget>:widget:systemMedium::321.00/148.00/20.20:(null)]>] Handle interaction: <private>
default 2025-04-10 15:05:26.858436 +0300 chronod Pausing reloads for: [<edited-bundle-identifier>::<edited-bundle-identifier>.<Widget>:widget]
default 2025-04-10 15:05:26.869525 +0300 chronod [0xd180b2440] activating connection: mach=true listener=false peer=false name=com.apple.linkd.registry
default 2025-04-10 15:05:26.870054 +0300 WidgetRenderer_Default Evaluating dispatch of UIEvent: 0x300e002a0; type: 0; subtype: 0; backing type: 11; shouldSend: 0; ignoreInteractionEvents: 0, systemGestureStateChange: 0
default 2025-04-10 15:05:26.870124 +0300 SpringBoard Evaluating dispatch of UIEvent: 0x300af9420; type: 0; subtype: 0; backing type: 11; shouldSend: 0; ignoreInteractionEvents: 0, systemGestureStateChange: 0
default 2025-04-10 15:05:26.870198 +0300 SpringBoard Evaluating dispatch of UIEvent: 0x300aeeca0; type: 0; subtype: 0; backing type: 11; shouldSend: 0; ignoreInteractionEvents: 0, systemGestureStateChange: 0
default 2025-04-10 15:05:26.871831 +0300 linkd Accepting XPC connection from PID 129 for service "com.apple.linkd.registry"
default 2025-04-10 15:05:26.871840 +0300 linkd [0x410cbe6c0] activating connection: mach=false listener=false peer=true name=com.apple.linkd.registry.peer[129].0x410cbe6c0
info 2025-04-10 15:05:26.876032 +0300 chronod Client requested (
"<LNFullyQualifiedActionIdentifier: 0xd17321b40, bundleIdentifier: <edited-bundle-identifier>, actionIdentifier: ReloadBalanceIntent>"
), got {
}
default 2025-04-10 15:05:26.877178 +0300 chronod [0xd180b2440] invalidated because the current process cancelled the connection by calling xpc_connection_cancel()
default 2025-04-10 15:05:26.877377 +0300 linkd [0x410cbe6c0] invalidated because the client process (pid 129) either cancelled the connection or exited
Then it followa with this on iOS18.4 :
error 2025-04-10 15:21:32.964920 +0300 chronod [<WidgetRenderSession-7817322460413849944-scene::B5E4D7C4-91E1-4656-8175-C3C3C1CB894D::0xc733b8000-[<edited-bundle-identifier>::<edited-bundle-identifier>.<Widget>:widget:systemLarge::364.00/382.00/23.00:(null)~(null)]>] Encountered error when handling interaction: ChronoKit.InteractiveWidgetActionRunner.Errors.runnerClientError(Error Domain=WFLinkActionWorkflowRunnerClientErrorDomain Code=1 "There is no metadata for ReloadBalanceIntent in `<edited-bundle-identifier>`" UserInfo={NSLocalizedDescription=There is no metadata for ReloadBalanceIntent in `<edited-bundle-identifier>`})
default 2025-04-10 15:21:32.964958 +0300 chronod [<edited-bundle-identifier>::<edited-bundle-identifier>.<Widget>:widget] Resuming reloads. Reload state paused -> clean
info 2025-04-10 15:21:32.965013 +0300 chronod [interactionFailed] All diagnostics are disabled.
Whereas on iOS18.0 it follows with a simplified error:
error 2025-04-10 15:05:26.879005 +0300 chronod [<WidgetRenderSession--4632871937259503361-scene::C1F20222-CC99-45CC-B074-A76785AED3F9::0xb5bc4c000-[<edited-bundle-identifier>::<edited-bundle-identifier>.<Widget>:widget:systemMedium::321.00/148.00/20.20:(null)]>] Encountered error when handling interaction: Error Domain=ChronoKit.InteractiveWidgetActionRunner.Errors Code=1
default 2025-04-10 15:05:26.879065 +0300 chronod Resuming reloads for: [<edited-bundle-identifier>::<edited-bundle-identifier>.<Widget>:widget]
but afterwards we see many lines describing the reload process.
So it turns out that the intent fails(?) to execute on both OSes but iOS18.0 triggers a reload even so, which fits our purposes.
What could the issue be? The intent is pretty standard, it contains only the title, localizedDescription and is defined only inside the widget.
Issue Report
1.Multiple instances of the same widget from one app were added,
but only one fails to display while others work normally.
2.Sometimes the widget displays blank on iOS 18.3.2
Technical Context
Occurs intermittently
Specific to iOS version 18.3.2
Widget content fails to render
My widget requests server data updates in getTimeline to refresh information. But if the server API returns an error and I don't execute the completion callback, will this cause any problems?
Hello,
I'm working with Live Activities and noticed that sometimes an activity transitions to .dismissed, even though the user hasn't manually swiped it away and system conditions appear to be completely normal — such as:
The activity is still within its intended 8-hour lifetime
The battery level is high
The app is active or recently active
The activity is lightweight (not using frequent updates)
According to the ActivityKit documentation:
/// The Live Activity ended and is no longer visible because a person or the system removed it.
case dismissed
This doesn’t clarify why the system would dismiss an activity when all conditions seem fine.
Additional context:
When reviewing system logs via Console.app, we’re seeing messages such as:
liveactivitiesd Removing activity from replicator: 381F3DDC-585B-4021-B075-548606F543DA for relationship IDs: [C7AB9C2A-49DD-43FC-BB58-D768ECF9D354]
This suggests that the system is actively removing the activity, but there’s no API or reason provided that helps us understand why this is happening.
Questions:
What are the system-level triggers that could cause a Live Activity to be dismissed under normal conditions?
Is there a known set of heuristics (e.g., memory pressure, resource constraints) that might apply?
Is there a way to distinguish between system-triggered dismissal and user-initiated swipe-to-dismiss?
Any best practices to reduce the likelihood of unexpected system removal?
This is especially important for our use case, where users rely on Live Activities to view real-time flight and boarding information — and losing the activity unexpectedly negatively affects user experience.
Thanks in advance for any insight!
Trying to start a live activity without showing anything, and update its UI while app is being terminated. However, we found very inconsistent behavior - sometimes it shows sometimes not - could you help figure out the cause?
I tested it on the app I work with and others I use and the notification message is not appearing when using sleep mode.
Someone knows something about this, and if it is mapped for correction?
Iphone: 13 mini IOS: 18.4.1