I am working on a Flutter application which is use solely to collect data from a bluetooth low energy (BLE) peripheral and then upload the data to our cloud.
The application runs in the background 99% of the time after the initial login and BLE pairing which is causing us some issues.
After the Application is backgrounded it would work for a day to 2 days and then stop working. (What I mean with working is to download data from the BLE peripheral and then upload the data to our cloud). Once the data syncing has stopped it would take up to 12 hours until data starts flowing again.
I have read in a couple of places that iOS implements some sort of "budget/heuristics" when the application is running in the background to keep track of the application and when this "budget" is used up iOS will stop servicing the application until iOS decides that the application can run in the background again.
My question, is it possible via a enablement or some other mechanism to prevent iOS from blocking our application from running in the background to enable 24/7 periodic data uploads every 30 minutes.
We have implemented the following so far;
The data sync process is triggered from the BLE peripheral using a notification. This notification is sent every 30 minutes.
Each sync duration is currently 24 seconds on average, we are working on reducing this to below 10 seconds.
We implemented State Restoration to assist iOS in starting the application more efficiently.
We are considering using Silent Push Notifications from the Cloud to wake up the application when data hasn't synced in 6 hours.
Any assistance would be high appreciated.
General
RSS for tagDelve into the world of built-in app and system services available to developers. Discuss leveraging these services to enhance your app's functionality and user experience.
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Hello.
I've implemented the Live Caller ID Lookup feature in my app, but sometimes I get a weird error. When I call LiveCallerIDLookupManager.shared.refreshPIRParameters(...) from my app, it sometimes throws an error:
Error Domain=com.apple.CipherML Code=1100 "Unable to query status due to errors: The resource could not be loaded because the App Transport Security policy requires the use of a secure connection." UserInfo={NSLocalizedDescription=Unable to query status due to errors: The resource could not be loaded because the App Transport Security policy requires the use of a secure connection., NSUnderlyingError=0x118f65740 {Error Domain=NSURLErrorDomain Code=-1022 "The resource could not be loaded because the App Transport Security policy requires the use of a secure connection." UserInfo={NSLocalizedDescription=The resource could not be loaded because the App Transport Security policy requires the use of a secure connection., NSErrorFailingURLKey=http://www.example.com/config}}}
What does this error mean? And where did the example.com part come from? What should I do to get rid of this error? My Service URL is hardcoded in the Live Caller ID Lookup Extension of my app and it is definitely not example.com.
We are looking to setup domain-bound codes for our app and need to add the associated domain file to our website.
We currently do not use Universal Links or Password AutoFill.
We have looked at the documentation but are not sure of what the contents of the association file should be to enable domain-bound codes if you are not using Universal Links or Password AutoFill.
Can any assistance be provided?
We are planning to use our internal IdP (PingFederate) for authentication of end users in their iOS apps using ASWebAuthenticationSession. Initial tests are successful, but the user is prompted for every login (and logouts) with a consent dialogue box:
“AppName” wants to use “internal domain-name” to Sign In
This allows the app and website to share information about you.
Cancel Continue”
Let’s say that our top-level domain is “company.no”, where our IdP is placed at “idp.company.com”. I have seen examples where the Associated domains entitlement points to the idp as a webserver for serving the JSON output AASA file. In this case that would be:
authsrv: idp.company.com
Anyone with experience implementing this structure with the IdP as webserver for serving the JSON output?
Our problem is that trying to use the IdP as webserver for this purpose is that it is very complicated to modify the IdP’s webserver configuration. Also, this modification needs to be re-done every time we need to upgrade the IdP.
My question is therefore also related to the options of which webserver to install the AASA file on. Has anyone installed the file on a generic webserver on the toplevel domain like
“webserver.company.com” ?
I'm using the new AlarmKit framework to build a Swift app that lets users schedule multiple repeating alarms.
The goal is to allow users to stop all alarms for today if they wake up early, but the alarms should still ring on their scheduled days in the future (for example, every Monday).
What I tried:
When the user chooses to stop alarms for today, I delete all alarms and re-add them. However, this doesn't work as expected.
If today is Monday and I delete and re-add the alarm with .weekday = .monday, it still rings today. That means re-adding the alarm doesn't skip today's instance, even though it's repeating.
What I want to achieve:
Skip or suppress today's alarms when the user stops them manually
Keep the same alarms active for their scheduled days in the future
Questions:
Is there a way in AlarmKit to prevent a repeating alarm from ringing today if it was just re-added or there are better alternatives to this problem?
Is the only workaround to delay re-adding until after today’s alarms would have fired?
What is the best approach to achieve this?
Topic:
App & System Services
SubTopic:
General
I'm integrating Twilio Voice (v6.12.1) into my React Native app (using Swift bridging for iOS) and have implemented full VoIP, PushKit, and CallKit support for incoming calls.
✅ What works:
Incoming calls trigger the VoIP push and display the full-screen CallKit interface (or fallback UI).
Decline Call works as expected.
Call logs and events print correctly.
❌ Problem:
When I try to accept the call using the CallKit Accept button or React Native fallback UI, I consistently get:
❌ [TwilioVoiceModule] answerCall() callInvite is missing.
I also noticed that the console logs for answerCall() are being printed three times in a row, even though the accept button is only pressed once. Additionally in the first time console, answerCall() CallInvite found, accepting...
🔍 Observations:
The callInvite is properly received when the VoIP push arrives.
But when answerCall() is triggered, callInvite becomes nil.
This happens in CallKit accept, RN UI accept, and even notification banner accept.
📦 How it's set up (summarized):
PushKit Registration – via PKPushRegistry in AppDelegate.swift
VoIP push handling – forwards payload to TwilioVoiceModule.handleIncomingPush()
CallKit integration – uses CXProviderDelegate to report and handle accept actions
JS Bridge – emits acceptCallAction to JS
React Native calls TwilioVoiceModule.answerCall(uuid, callSid)
In answerCall() method: self.callInvite is nil – so call cannot be accepted.
Attaching the link to view the relevant code: https://docs.google.com/document/d/15pNjKrfk954OaotpMIEh3xQUtst---1K45DBXoYctGM/edit?usp=sharing
💡 Call Accept Flow (iOS):
VoIP Push → TwilioVoiceModule.handleIncomingPush()
Twilio SDK creates callInvite
reportNewIncomingCall() triggers CallKit UI
On accept: CXAnswerCallAction → emits event to JS
RN calls TwilioVoiceModule.answerCall(uuid, callSid)
Problem: callInvite is already nil
❓ What I'm trying to understand:
Why is callInvite becoming nil before answerCall() is called?
Why are the logs showing the answerCall() call 3 times?
Is there a race condition or multiple accept triggers?
Should I ensure callInvite is accepted only once across all 3 accept paths?
**
💬 Any help would be appreciated.**
📱 Environment:
React Native 0.78.x
iOS 17+
Swift bridging with TwilioVoiceModule.swift
Twilio Voice SDK 6.12.1
PushKit + CallKit + react-native-callkeep
I have an app with Message Filtering Extension enabled and I have been experiencing unusual behaviour.
When I send messages from local number to local number, the filtering is done correctly, but when I send messages from certain international number to my local number the messages are not filtered. I couldn't find any errors in Console.
I see that the normalisation is correct, is there any specifications for SMS from certain countries? Or a reason why Message Filtering is not activated when a SMS is received?
Since iOS 18.3.1, In lower iOS versions it works fine though.
QLPreviewController shows a blank white screen instead of showing the document. Additionally, it does not display the 'Done' option at the top-right to close the view.
Presenting the QLPreviewController works fine to display the document, but for the second time, it renders the blank white screen as described.
While launching QLPreviewControllerView for the first time. I'm receiving the following message in the console and it displays the document.
LaunchServices: store (null) or url (null) was nil: Error Domain=NSOSStatusErrorDomain Code=-54 "process may not map database" UserInfo={NSDebugDescription=process may not map database, _LSLine=72, _LSFunction=_LSServer_GetServerStoreForConnectionWithCompletionHandler}
Attempt to map database failed: permission was denied. This attempt will not be retried.
Closing the QLPreviewController with the help of the 'Done' option from top-right or swipe to close triggers the following message in the console.
Connection to appex interrupted
AX Lookup problem - errorCode:1100 error:Permission denied portName:'com.apple.iphone.axserver' PID:1022 (
0 AXRuntime 0x00000001d2cd7758 _AXGetPortFromCache + 796
1 AXRuntime 0x00000001d2cdd02c AXUIElementPerformFencedActionWithValue + 700
2 UIKit 0x0000000258cdf488 7F0274D9-D3C9-3193-B606-1C74BE53B86C + 1537160
3 libdispatch.dylib 0x0000000101bb888c _dispatch_call_block_and_release + 32
4 libdispatch.dylib 0x0000000101bba578 _dispatch_client_callout + 20
5 libdispatch.dylib 0x0000000101bc2454 _dispatch_lane_serial_drain + 840
6 libdispatch.dylib 0x0000000101bc325c _dispatch_lane_invoke + 408
7 libdispatch.dylib 0x0000000101bd06fc _dispatch_root_queue_drain_deferred_wlh + 328
8 libdispatch.dylib 0x0000000101bcfd0c _dispatch_workloop_worker_thread + 580
9 libsystem_pthread.dylib 0x0000000225ea4680 _pthread_wqthread + 288
10 libsystem_pthread.dylib 0x0000000225ea2474 start_wqthread + 8
)
Trying to open he document again, Ultimately results in the white blank screen to be displayed with no options to close.
It displays the Navigation bar only for the fraction of time. Leading users to force close the app and start again.
I have an app I want to get on the App Store but when I was putting in the build version slot, I accidentally deleted it by clicking backspace and tried everything to get it working again but I can't. Is there anyway for me to retrieve the slot so it works?
Topic:
App & System Services
SubTopic:
General
Hey there! So, I'm trying to see what I'm able to do with the Device Activity Report Extension, and I have a few questions about the following quote:
To protect the user’s privacy, your extension runs in a sandbox. This sandbox prevents your extension from making network requests or moving sensitive content outside the extension’s address space.
In particular, what constitutes the address space for this extension?
Can I save data to a UserDefaults object that only the extension can access? (Apps like Opal allow the user to label apps as "distracting" and "non-distracting", and I'm wondering how they do that!)
From what I've read, I believe it cannot write to a shared app group or model (and I just want to confirm this)
It also seems that there's nothing preventing it from reading data from the main app, so I'm just wondering if it's able to read data from an app group or model with no problem.
Thanks in advance!
Topic:
App & System Services
SubTopic:
General
Tags:
Family Controls
Device Activity
Screen Time
Privacy
I want to monitor again from the bellow function of DeviceActivityMonitorExtension. I have the function of startMonitoring like this.
override func eventDidReachThreshold(_ event: DeviceActivityEvent.Name, activity: DeviceActivityName) {
super.eventDidReachThreshold(event, activity: activity)
startMonitoring()
}
public func startMonitoring() {
let startTime = DateComponents(hour: 0, minute: 0, second: 0)
let endTime = DateComponents(hour: 23, minute: 59, second: 59)//DateComponents(hour: 11, minute: 0, second: 0)//
let schedule = DeviceActivitySchedule(
intervalStart: startTime,//DateComponents(hour: 0, minute: 0, second: 0),
intervalEnd: endTime,
repeats: true
//warningTime: DateComponents(minute:1)
)
let selection: FamilyActivitySelection = savedSelection() ?? FamilyActivitySelection()
let center = DeviceActivityCenter()
let selections = self.savedSelection() ?? FamilyActivitySelection()
let applications = selections.applicationTokens
let categories = selections.categoryTokens
let webCategories = selections.webDomainTokens
let store = ManagedSettingsStore()
store.shield.applicationCategories = ShieldSettings.ActivityCategoryPolicy.specific(categories, except: Set())
store.shield.applications = applications
store.shield.webDomains = webCategories
let scheduleHard = DeviceActivitySchedule(
intervalStart: startTime,//DateComponents(hour: 0, minute: 0, second: 0),
intervalEnd: endTime,
repeats: true
//warningTime: DateComponents(minute:1)
)
let event = DeviceActivityEvent(
applications: selection.applicationTokens,
categories: selection.categoryTokens,
webDomains: selection.webDomainTokens,
threshold: DateComponents(minute: 0)//timeLimitToUseApp i.e for 15 mins
)
do {
try center.startMonitoring( .weekend,
during: scheduleHard,
events: [
.weekend: event,
]
)
print("ScreenTime Monitoring Started")
} catch let error {
print(error.localizedDescription)
}
}
Please provide us with a solution about starting monitoring from DeviceActivityMonitoringExtension's eventDidReachThreshold function or if there is any other way.
I’m creating an app with the Screen Time API and I would like to know how to make the app show a parental control editing view for parents and a view for child accounts that shows which apps are blocked. How can I do this?
Hello! I'm working with universal links in my app and have configured the /.well-known/apple-app-site-association file. Currently, I use the paths array in this file to define URL routing rules. However, I’m struggling to find up-to-date documentation on the pattern syntax supported by the paths field.
"paths": [
"/page/*",
"NOT /page/*/subpage"
]
Could someone clarify:
Is the paths array still officially supported, or is it deprecated in favor of the newer components dictionary (as referenced here https://developer.apple.com/documentation/bundleresources/applinks/details-swift.dictionary/components-swift.dictionary)?
If paths is still valid, where can I find documentation for its pattern-matching capabilities?
I want to ensure my implementation aligns with Apple’s current best practices. Thank you!
Hi all,
I'm trying to set up universal links for my app but it's not working.
What I want:
cogover.com → Safari (website) - NOT my app
*.cogover.com (any subdomain like abc.cogover.com) → My app
What I did:
Added applinks:*.cogover.com in Xcode
Put AASA files on all subdomains
They work fine (checked with curl)
Problem:
All links still open in Safari, not my app.
I do not put AASA on my root domain cogover.com because I don't want open my app with root domain.
I have checked TN3155: Debugging universal links | Apple Developer Documentation but it only say about universal link works with both root domain and subdomains.
Weird thing I found:
I checked how Salesforce does it - their *.force.com subdomains work perfectly. But when I tried to check their setup, (https://force.com/.well-known/apple-app-site-association) doesn't seem to exist either! So how does theirs work?
Even stranger - Apple's CDN has their file cached at (https://app-site-association.cdn-apple.com/a/v1/force.com) but the actual domain doesn't serve it. Can Apple's CDN have a file cached even if it's not on the website anymore?
Thanks for any help!
Hi! We are having a hard time with the universal link, help is appreciated! Thanks in advance!
The universal link doesn't work after installation for some time. A user has to wait for from 5 to a couple of hours after the app is installed on the device.
This has also affected App reviewers since we need the universal link to work for successful login. Each submission will receive a rejection of we cannot login and it will be approved until we kindly ask them to try again.
I believe the JSON is delivered to devices by Apple's CDN system and the fact that it works on most devices most of the time should imply that we have a valid apple-app-site-association setup.
So I am really confused about the wait time, which is giving us trouble with app review and a bad user experience
I tried with VSUserAccountManager.shared.requestAutoSignInAuthorization(). It did prompt a popup but with errors.
I do have 'com.apple.smoot.subscriptionservice' configured in the entitlement. I don't know what's happened? Could you help me out.
I'm working with the FamilyControls and DeviceActivity frameworks in iOS (Swift).
In my app, I collect selected apps using a FamilyActivitySelection, and I access the selected apps via selection.applicationTokens, which gives me a Set.
I would like to get either the bundle identifier or the display name of the selected apps from these ApplicationTokens.
I tried creating an Application instance using:
let app = Application(token: token)
print(app.bundleIdentifier)
print(app.localizedDisplayName)
However, both bundleIdentifier and localizedDisplayName are always nil.
My questions are:
Outside the extension (in the main app), how can I get the bundleIdentifier or display name from an ApplicationToken?
Is there an Apple-recommended way to resolve a Token into something human-readable or usable?
If not, what is the best practice to store or identify user-selected apps for later use?
Environment:
iOS 17,
Swift 5,
Using FamilyControls and DeviceActivity APIs.
Thank you for any help!
My iOS app uses a Message Filter extension (via ILMessageFilterQueryHandling) and works only when run directly as the extension target. When installed normally (via TestFlight), the filter does not trigger at all — which I now believe is because iOS enforces the com.apple.developer.identitylookup entitlement at runtime.
Anyone know anything about this? I put in a request for the entitlement last week but heard nothing back. Called Apple "technical" support and they had no idea what I was talking about.
The documentation around this is EXTREMELY lacking in my opinion...
We use SCK to screen share, however [SCShareableContent getShareableContentWithCompletionHandler:] takes over 5+ seconds before returning the response. Is it normal? What we can do to reduce the time consumption?
Is there a way to increase the frequency of UWB background ranging?