Issue:
We noticed inconsistent BLE device discovery times (ranging from 0.5s to 1.5s) despite the peripheral advertising at 2Hz (500ms interval).
Questions:
Does iOS regulate the BLE scan interval or duty cycle internally? If yes, what factors affect this behavior (e.g., foreground/background state, connected devices)? Are there recommended practices to reduce discovery latency for peripherals with fixed advertising intervals? Is there a way to configure scan parameters (e.g., scan window/interval) programmatically, similar to Android's BluetoothLeScanner?
Test Context:
Device: iPhone 13 mini (iOS 17.6.1)
Code: CBCentralManager.scanForPeripherals(withServices: nil, options: [CBCentralManagerScanOptionAllowDuplicatesKey: true])
Delve 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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Hi everyone,
We’re integrating Apple Calendar (iCalendar) into our Codapet app but haven’t found any official Apple APIs for event management and synchronisation.
Currently, we use CalDAV with Apple ID authentication and an app-specific password (ASP), storing the ASP encrypted in our database and decrypting it for each API call. We’re looking for a more secure and recommended approach to this integration.
Does Apple provide dedicated APIs for calendar sync, or is there a better alternative to avoid sending the ASP with every request? Any guidance or best practices would be greatly appreciated!
Thanks!
I am able to block apps using FamilyControl and Shield. Unblocking is also simple—just assign nil to store.shield.applications. However, I want to unblock them even when the app is not open.
Use case: Let's say the app allows users to create a session where a particular app is blocked for a specific duration. Once the session starts, the app should remain blocked, and as soon as the session time ends, it should automatically be unblocked.
Please help me with this. Thank you!
We're in the process of migrating our app to the Swift 6 language mode. I have hit a road block that I cannot wrap my head around, and it concerns Core Data and how we work with NSManagedObject instances.
Greatly simplied, our Core Data stack looks like this:
class CoreDataStack {
private let persistentContainer: NSPersistentContainer
var viewContext: NSManagedObjectContext { persistentContainer.viewContext }
}
For accessing the database, we provide Controller classes such as e.g.
class PersonController {
private let coreDataStack: CoreDataStack
func fetchPerson(byName name: String) async throws -> Person? {
try await coreDataStack.viewContext.perform {
let fetchRequest = NSFetchRequest<Person>()
fetchRequest.predicate = NSPredicate(format: "name == %@", name)
return try fetchRequest.execute().first
}
}
}
Our view controllers use such controllers to fetch objects and populate their UI with it:
class MyViewController: UIViewController {
private let chatController: PersonController
private let ageLabel: UILabel
func populateAgeLabel(name: String) {
Task {
let person = try? await chatController.fetchPerson(byName: name)
ageLabel.text = "\(person?.age ?? 0)"
}
}
}
This works very well, and there are no concurrency problems since the managed objects are fetched from the view context and accessed only in the main thread.
When turning on Swift 6 language mode, however, the compiler complains about the line calling the controller method:
Non-sendable result type 'Person?' cannot be sent from nonisolated context in call to instance method 'fetchPerson(byName:)'
Ok, fair enough, NSManagedObject is not Sendable. No biggie, just add @MainActor to the controller method, so it can be called from view controllers which are also main actor. However, now the compiler shows the same error at the controller method calling viewContext.perform:
Non-sendable result type 'Person?' cannot be sent from nonisolated context in call to instance method 'perform(schedule:_:)'
And now I'm stumped. Does this mean NSManageObject instances cannot even be returned from calls to NSManagedObjectContext.perform? Ever? Even though in this case, @MainActor matches the context's actor isolation (since it's the view context)?
Of course, in this simple example the controller method could just return the age directly, and more complex scenarios could return Sendable data structures that are instantiated inside the perform closure. But is that really the only legal solution? That would mean a huge refactoring challenge for our app, since we use NSManageObject instances fetched from the view context everywhere. That's what the view context is for, right?
tl;dr: is it possible to return NSManagedObject instances fetched from the view context with Swift 6 strict concurrency enabled, and if so how?
My app monitors users heart beats and if critical reading is noticed, it auto -dials 911 for emergency and ambulance help.
I was under the impression that auto-dial may not be permitted or possible on the platform.
Can anyone confirm and provide any additional guidance on if it is possible in the newer SDK/API stack or using any 3rd party service ?
Thank you in advance!!
Topic:
App & System Services
SubTopic:
Automation & Scripting
Tags:
Mobile Core Services
Watch Connectivity
WatchKit
I'm curious, why DynamicOptionsProvider is available on watchOS? Is there any way to present options to the user? For example in Emoji Rangers project:
struct EmojiRangerSelection: AppIntent, WidgetConfigurationIntent {
static let intentClassName = "EmojiRangerSelectionIntent"
static var title: LocalizedStringResource = "Emoji Ranger Selection"
static var description = IntentDescription("Select Hero")
@Parameter(title: "Selected Hero", default: EmojiRanger.cake, optionsProvider: EmojiRangerOptionsProvider())
var hero: EmojiRanger?
struct EmojiRangerOptionsProvider: DynamicOptionsProvider {
func results() async throws -> [EmojiRanger] {
EmojiRanger.allHeros
}
}
func perform() async throws -> some IntentResult {
return .result()
}
}
On watchOS we usually use recommendations() to give the user predefined choice of configured widgets. Meanwhile in AppIntentProvider recommendations are empty:
struct AppIntentProvider: AppIntentTimelineProvider {
...
func recommendations() -> [AppIntentRecommendation<EmojiRangerSelection>] {
[]
}
}
Does it imply that there's a way to use DynamicOptionsProvider on watchOS somehow? BTW, WidgetConfiguration.promptsForUserConfiguration() is one of the methods that are not available on watchOS.
And also, the Emoji Ranger project doesn't show widgets (complications) on watchOS out of the box.
Hi
Here is my problem. I have a large number of portrait pictures in my adobe lightroom catalogue which I need to email to the subjects of the portraits.
These peoples names and email addresses are stored in my pictures metadata and I am able to export the pictures with accompanying text or CSV files containing the names & addresses.
What I want to do is export the pictures in bulk and automagically create and send individual emails for each picture, preferably with the persons name in the salutation at the start of the email.
I have done some googling trying to find a solution to this. I think that I need to use automator. (The lightroom option of mailing directly from within the programme isn't going to do the job, each mail would need to be addressed and written by hand each time). I have been playing around with it, but can see no way to populate the email address field or add the attachment.
Can anyone help me out, with even just the basic outline, of how this would be achieved please?
self.pushRegistry = [[PKPushRegistry alloc] initWithQueue:dispatch_get_main_queue()];
self.pushRegistry.delegate = self;
self.pushRegistry.desiredPushTypes = [NSSet setWithObject:PKPushTypeVoIP];
//处理接收到的VoIP推送
(void)pushRegistry:(PKPushRegistry *)registry didReceiveIncomingPushWithPayload:(PKPushPayload *)payload forType:(PKPushType)type withCompletionHandler:(void(^)(void))completion
then we send message from our server or from apple's cloud service: https://icloud.developer.apple.com/dashboard/notifications website services:
when app is in foreground,withCompletionHandler wil be called correctly,but when app is in background or has killed ,withCompletionHandler not be called!!!
the background fetch、voice over ip is checked in signing & capabilities tabs
why?why?why?why?why?why?why?why?why?
My question is simple, I do not have much experience in writing swift code, I am only doing it to create a small executable that I can call from my python application which completes Subcription Management.
I was hoping someone with more experience could point out my flaws along with giving me tips on how to verify that the check is working for my applicaiton. Any inight is appreciated, thank you.
import Foundation
import StoreKit
class SubscriptionValidator {
static func getReceiptURL() -> URL? {
guard let appStoreReceiptURL = Bundle.main.appStoreReceiptURL else {
print("No receipt found.")
return nil
}
return appStoreReceiptURL
}
static func validateReceipt() -> Bool {
guard let receiptURL = getReceiptURL(),
let receiptData = try? Data(contentsOf: receiptURL) else {
print("Could not read receipt.")
return false
}
let receiptString = receiptData.base64EncodedString()
let validationResult = sendReceiptToApple(receiptString: receiptString)
return validationResult
}
static func sendReceiptToApple(receiptString: String) -> Bool {
let isSandbox = Bundle.main.appStoreReceiptURL?.lastPathComponent == "sandboxReceipt"
let urlString = isSandbox ? "https://sandbox.itunes.apple.com/verifyReceipt" : "https://buy.itunes.apple.com/verifyReceipt"
let url = URL(string: urlString)!
let requestData: [String: Any] = [
"receipt-data": receiptString,
"password": "0b7f88907b77443997838c72be52f5fc"
]
guard let requestBody = try? JSONSerialization.data(withJSONObject: requestData) else {
print("Error creating request body.")
return false
}
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.httpBody = requestBody
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
let semaphore = DispatchSemaphore(value: 0)
var isValid = false
let task = URLSession.shared.dataTask(with: request) { data, response, error in
guard let data = data, error == nil,
let jsonResponse = try? JSONSerialization.jsonObject(with: data) as? [String: Any],
let status = jsonResponse["status"] as? Int else {
print("Receipt validation failed.")
semaphore.signal()
return
}
if status == 0, let receipt = jsonResponse["receipt"] as? [String: Any],
let inApp = receipt["in_app"] as? [[String: Any]] {
for purchase in inApp {
if let expiresDateMS = purchase["expires_date_ms"] as? String,
let expiresDate = Double(expiresDateMS) {
let expiryDate = Date(timeIntervalSince1970: expiresDate / 1000.0)
if expiryDate > Date() {
isValid = true
}
}
}
}
semaphore.signal()
}
task.resume()
semaphore.wait()
return isValid
}
}
In my case, when two functions that start each Live Activity(not connected each other) are performed in LiveActivityIntent's perform(), it seems that only one will start.
(It's the same to start independently with two Task{})
And, set one to 'opensIntent' and separate it by opening another LiveActivityIntent, the result is same.
Also, every time I tap the Intent directly in the shortcut app, one activity will end within a matter of seconds, even if there are two for a while.
But, If openAppWhenRun to true, it seem to works without any problems.
I would appreciate it if you could give me a tip to fix this problem.
Please allow me to confirm the Server Notifications V2 specification.
I am aware that if withdrawal an Apple account that has a subscription, the subscription will eventually be cancelled.
Regarding Server Notifications V2 notifications with a notificationType of EXPIRED, am I correct in thinking that they will be sent when the subscription expires even if the Apple account is withdrawal?
Hi, I want to offer an auto-renewable subscription (e.g., $1/month) that grants users (10 document analyses per month), with the count resetting at the start of each billing cycle.
-Unused analyses will not roll over to the next month-
Additionally, any analyses generated while the subscription is active will remain accessible to the user permanently, even if they cancel the subscription.
The paywall, app description, and metadata will clearly state that the subscription grants (10 document analyses per month with no rollover)
We want this to be implemented as an auto-renewable subscription model, not as a consumable service or a token/credit system (which we want to avoid).
Is this model acceptable under Apple’s guidelines, or would it be considered a token/credit system? Any insights or alternative suggestions would be appreciated.. Thanks
I'm trying to run this example project: https://developer.apple.com/documentation/HealthKit/building-a-multidevice-workout-app
When I run it on my device (iPhone 16 Pro and Apple Watch Ultra 2)
I get this error:
-[SPRemoteInterface _appRecoverAnyExtendedRuntimeSession:]_block_invoke:4350: Got no sessions back from -[CSLSSessionService existingRunningSessions:] or -[CSLSSessionService existingScheduledSessions:] after receiving a PUICInitializeSessionServiceAction
I start the workout from my phone, which successfully starts the workout on the watch. But this callback is never triggered on the phone:
healthStore.workoutSessionMirroringStartHandler {
// not happening
}
This makes it difficult to learn the mirroring workout technique.
I'm using Xcode 16.3 and Mac OS 15.4.1.
Any help appreciated!
I have a document based SwiftData app in which I would like to implement a persistent cache. For obvious reasons, I would not like to store the contents of the cache in the documents themselves, but in my app's data directory.
Is a use case, in which a document based SwiftData app uses not only the ModelContainers from the currently open files, but also a ModelContainer writing a database file in the app's documents directory (for cache, settings, etc.) supported?
If yes, how can you inject two different ModelContexts, one tied to the currently open file and one tied to the local database, into a SwiftUI view?
Hello,
I am developing a calling service using CallKit and VOIP push.
I have occasionally encountered a strange issue.
The issue is that VOIP permanently fails to receive calls.
I was previously informed that even if the device is blocked, it can receive calls again after 24 hours.
Also, when I checked the device logic, it complied with the policy requirements set by Apple, including correctly calling CallKit's reportNewIncomingCall method.
Once the issue occurs, no matter how many times I try, VOIP does not receive calls, and neither a device reboot nor checking the Device Console Log shows any logs related to CallKit or VOIP.
I suspect this might be an issue with the VOIP token, and I believe that the only way to get a new one is to reinstall the app. Is that correct?
Of course, after reinstalling, it works fine again, but this is very inconvenient. I don't think this is the right solution.
Is there anyone who can share their insights on this issue?
Thank you.
We have created an app that uses Appintents to plug into Siri. However, launching the app >sometimes< will launch a menu that will let the user choose between the app and Contacts. Why? How can I tell Siri to not ask for Contacts?
A customer of mine signed up for a free trial. I got a apple server notification with notification type DID_RENEW. What does that mean? Does that mean that they will be charged the subscription price now?
I cannot access my corporate invoice. I don't know why I couldn't reach it. How and where can I reach it?
Topic:
App & System Services
SubTopic:
Health & Fitness
Hello everyone,
I’m currently developing an app that uses the Family Controls API, specifically the Screen Time API. However, my current entitlement is limited to development mode, which prevents me from publishing my app on TestFlight.
I have already contacted Apple Developer Support for production access but wanted to reach out to the community as well and I was referenced to FamilyControls API documentation and I couldn't find anything related to my case. Has anyone successfully upgraded their entitlement from development-only to production? Any insights on the process, tips for communicating with Developer Support, or guidance on ensuring full compliance with the Family Controls guidelines would be extremely helpful.
Hello everyone,
I would like to use AppleScript to transform a .csv file.
To make things easier to understand, I'm attaching two files:
1- The original file in csv format
2- The file as I'd like it to look after I've run it through the script.
Here are the steps involved
1-Open the file in numbers (Note: the file is located in the download folder).
2-Delete the first 6 lines
3-Delete all font styles and cell colors
4-Combine all cells in the nature of operation column of the same operation belonging to the same date in the first cell of the operation, deleting all spaces in the text is not necessary for each operation.
5- Delete all empty lines.
I hope I've made my request clear.
If any of you have the knowledge to do this, if it can be done at all, I'd be very grateful for their help in writing the script.
Thank you in advance.
1.csv
2.csv