WatchKit

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Build apps that leverage watchOS features like background tasks, extended runtime sessions, and access to the Digital Crown using WatchKit.

Posts under WatchKit tag

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Activity

Defer system gestures in a WatchKit app
Hi, I'm making a WatchKit game app with SpriteKit and Objective-C, and I'm encountering an annoyance where system gestures, namely long-pressing the top and bottom edges to pull Notification/Control Center, interfere with the controls of the game. In iOS, this can be mitigated by using overriding preferredScreenEdgesDeferringSystemGestures in UIViewController, but I couldn't find any equivalent API in any WatchKit class, and searching for similar symbols only yielded a single private API (-[_UISystemAppearanceManager screenEdgesDeferringSystemGestures]) that isn't ever called on watchOS. Any idea how to achieve a similar effect on watchOS?
1
0
619
Nov ’24
UpdateApplicationContext not working simulator
I am having problems on Xcode13.3.1, Monterey 12.2.1, Apple M1 Max. Sending an UpdateApplicationContext update from a paired iPhone simulator is not received on the paired Apple Watch Simulator in the didRecieveApplicationContext. However, sendMessage from the apple watch simulator does update the iphone simulator app properly. It is however, not possible to send anything from the paired iPhone simulator to the paired Apple Watch Simulator. When working with actual devices everything works properly with WatchConnectivity with passing information back and forth via updateapplicationcontext and sendmessage calls. Can anyone confirm this is a bug or if there is something wrong with my setup?
2
0
2.1k
Oct ’24
Local notification not working with ios app installed
I have an iOS and watchOS app where both can run independently, I am not using WatchConnectivity to send data back and fourth. The issue I'm having is that if I schedule a local notification on the watch and the phone is unlocked, it will not show on the watch for about 10-15 seconds. If I uninstall the iOS app or have the phone locked, it will show immediately on the watch. To my understanding, this is somewhat the expected functionality but is there a way to bypass it? My app is a timer app and it really should not have a delay.
2
0
684
Oct ’24
Text(date, style: .timer) issues with watchOS widget
I'm using Text(date, style: .timer) to display a timer in a WatchOS widget, which works great. The problem is that when the watchface goes dim the time goes from showing the time as "MM:SS" to showing "M minutes". Why is this occuring and how can I change the behavior? I understand it needs to remove seconds to preseve battery life, but why it is putting the word "minutes" at the end, this is messing up my layout. Thanks.
1
0
673
Oct ’24
My Custom Watchface
Dear all, i am a music conductor and developer, and to fulfill my joy with music i recently developed a WatchFace and some apps for a non-apple watch called "PineTime". My whole development is done in c++ and is available at https://github.com/luto65/PineConductor/ Since I am aswell an apple developer, and most of my friends have apple watches, i am now porting those c++ apps to the apple watch. I just finished the very first one, that is actually a watch Face I now ported it to appleWatch and it looks pretty similar too (here a screenshot from the simulator) I would like to now remove the annoying digital hour on the top right corner, and then sell it as new custom face, together with my other swift-ports of my original c++ applications. Looking forward any feedback.
1
0
549
Oct ’24
Can I fix this big difference between swiftui preview and actual watch widget layout?
Hi, working on customising my live activity Smart Stack layout for ios18. A thing that is very frustrating is that I consistently looks different for me in the Xcode preview and on the actual watch. See attached screenshots below. The sizes are different, and italic doesn't work on the watch, for example. It makes it time-consuming and unpredictable, so I was wondering if this is a known issue or if I'm doing something wrong, and also can I do anything? thanks edit: this is the layout: var body: some View { VStack(alignment: .center, spacing:4) { HStack(alignment: .center) { IconView(resource: "n-compact-w", bgColor: Color.checkedIn, padding: 2, paddingRight: 6, paddingBottom: 6) .frame(maxWidth: 25, maxHeight: 25).aspectRatio(1, contentMode: .fit) Text("Checked Out") .font(.title3).bold() } Text(status.loc) .font(.headline) .multilineTextAlignment(.center) Text(FormatUtils.getFormattedDateTime(status.time)).font(.subheadline) .multilineTextAlignment(.center).italic() } }
4
0
760
Oct ’24
WatchOS local notifications delayed
I'm scheduling local notifications on my WatchOS app, but they are always alerting exactly 13 seconds later than scheduled. I have read other users having the exact same issue but there is no solution anywhere. I'm not sure how one is supposed to write any sort of timer app when they are always coming in delayed. Any idea why this occurs and how to resolve it? For now I am subtracting 13 seconds from the end time, but that's not really a solution I'm happy with. Thanks
2
0
1k
Oct ’24
Live Activities with WatchOS app
Can you initiate a live activity from a Watch app? From what I can tell you can only do it from an iOS app and then have the Watch mirror it, is that true? If you were builiding a standalone timer app for WatchOS for instance and wanted the timer to show up automatically in Smart Stacks when the app is in the background, is this possible? Thanks
3
0
979
Oct ’24
How to disable Live Activity on Apple Watch while keeping it enabled on iPhone?
I'm using Live Activity features in my app, but I want to customize the user experience across different Apple devices. Specifically, I'd like to: Keep Live Activity enabled and functioning on the iPhone Disable or prevent Live Activity from appearing on the connected Apple Watch Is this level of device-specific control possible with Live Activity? If so, what's the best approach to implement this functionality? What I've tried: I've looked through Apple's documentation on Live Activity, but couldn't find specific information about device-level control. I've experimented with ActivityKit, but haven't found a clear way to distinguish between iPhone and Apple Watch when pushing updates.
4
0
1.7k
Oct ’24
Optimize watchOS CMSensorDataList parsing
I am trying to parse CMSensorDataList in watchOS. The maximum batch of data is comprised of 30 minutes. The sampling rate is 50Hz, which makes it 90,000 records for 30 minutes. We iterate over each item and finally write the data to a CSV file. As this is a slow processing keeping in view the execution limits of watchOS, the process suspends when app goes to the background. This way, it takes too much time to parse a significant time data. My question is, is there a way we can serialize this CMSensorDataList as a whole and transfer it to the phone using WCSession? Or is there another effective way to achieve this?
0
0
631
Oct ’24
Getting kclErrorDomain error : 1
Hi, I created an iOS app compatible watchOS app which was running perfectly fine before I updated my Xcode to use iPhone16. But after updating, I started to get kclErrorDomain error: 1 and I am not sure why is it happening after update. I am trying to use coreLocation module as- import Foundation import CoreLocation import Combine class LocationManager: NSObject, ObservableObject, CLLocationManagerDelegate { private var locationManager = CLLocationManager() @Published var location: CLLocation? override init() { super.init() locationManager.delegate = self locationManager.desiredAccuracy = kCLLocationAccuracyBest locationManager.requestWhenInUseAuthorization() locationManager.startUpdatingLocation() } func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { if let location = locations.last { self.location = location print("Updated location: \(location.coordinate.latitude), \(location.coordinate.longitude)") } else { print("No locations received") } } func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) { print("Failed to find user's location: \(error.localizedDescription)") } } and I am trying to use it as- @StateObject private var locationManager = LocationManager() guard let currentLocation = locationManager.location else { signInError = "Location not available" isLoading = false return } let latitude = currentLocation.coordinate.latitude let longitude = currentLocation.coordinate.longitude sendToBackend(email: email, password: password, deviceName: deviceName, deviceModel: deviceModel, deviceIdentifier: deviceIdentifier, latitude: latitude, longitude: longitude) Can someone help me regarding this?
1
0
1.1k
Oct ’24
How can I use an image for my live activity smartstack layout?
Hello, I am updating my live activity for the new ios18 Smart Stack functionality. I got it working through the WWDC session (Bring your live activities to Apple watch). I'm doing supplementalActivityFamilies([.small]) and then a custom layout in the .small ActivityFamily However, any images I try to use in the Smart Stack just show up as grey squares. (it works on the phone live activity) I suspect it's because my app images are not moved over to the watch? Because I don't have a watch app and such no watch target? If anyone can help me understand if there's anything I can do in order to have a custom image show up on the smart stack, I'd be very grateful.
3
0
869
Oct ’24
Hand Gesture Controls in an Apple Watch App
Hello everyone! I want to add hand gesture controls to my Apple Watch app. Specifically, I’m looking to implement the following gestures: 1. Tapping index finger and thumb together once 2. Tapping index finger and thumb together twice 3. Fist clench 4. Double fist clench Each gesture should trigger a different action within the app. However, I can’t find any information on how to implement this. I only came across an example using .handGestureShortcut(.primaryAction) (Enabling the double-tap gesture on Apple Watch https://developer.apple.com/documentation/watchOS-Apps/enabling-double-tap), but I need to handle four distinct gestures. Is this possible in watchOS 11? Any guidance or examples would be greatly appreciated! Thank you!
1
0
755
Oct ’24
CLKComplicationWidgetMigrator not working
I'm trying to migrate from Complication with CLKComplication to WidgetKit. I have implemented the required methods in https://developer.apple.com/documentation/widgetkit/converting-a-clockkit-app, but the migration is not working. There is no evidence that the method for migration is also called. It was the same with Xcode 14.0.1 and Xcode 14.1RC. class ComplicationController: NSObject, CLKComplicationDataSource, CLKComplicationWidgetMigrator { ...     @available(watchOS 9.0, *)     var widgetMigrator: CLKComplicationWidgetMigrator {         return self     }     @available(watchOS 9.0, *)     func widgetConfiguration(from complicationDescriptor: CLKComplicationDescriptor) async -> CLKComplicationWidgetMigrationConfiguration? {         return CLKComplicationStaticWidgetMigrationConfiguration(kind: "MyWidget", extensionBundleIdentifier: "com.example.myapp.mywatchkitapp.mywidget")     } } What's wrong? Has anyone been able to migrate?
7
1
2.6k
Oct ’24
Casting `[String: Any]` to `[String: any Sendable]`
I have a simple wrapper class around WCSession to allow for easier unit testing. I'm trying to update it to Swift 6 concurrency standards, but running into some issues. One of them is in the sendMessage function (docs here It takes [String: Any] as a param, and returns them as the reply. Here's my code that calls this: @discardableResult public func sendMessage(_ message: [String: Any]) async throws -> [String: Any] { return try await withCheckedThrowingContinuation { (continuation: CheckedContinuation<[String: Any], Error>) in wcSession.sendMessage(message) { response in continuation.resume(returning: response) // ERROR HERE } errorHandler: { error in continuation.resume(throwing: error) } } } However, I get this error: Sending 'response' risks causing data races; this is an error in the Swift 6 language mode Which I think is because Any is not Sendable. I tried casting [String: Any] to [String: any Sendable] but then it says: Conditional cast from '[String : Any]' to '[String : any Sendable]' always succeeds Any ideas on how to get this to work?
3
1
1.6k
Oct ’24
SwiftUI - WatchKit TextField Keyboard closed immediately before entering text
The TextField Shows and When selected opens the keyboard very slowly and before entering text closes immediately with these messages. <PUICQuickboardController: 0x6000029111f0> [0x6000029111f0-1] presentation watchdog expired! <PUICQuickboardController: 0x6000029111f0> [0x6000029111f0-1] is no longer the current presentation, we must have timed out... This App was working fine in Simulator and test devices until recently.
0
0
450
Oct ’24
WKApplication.didBecomeActiveNotification not fired when Control Center (or other system overlay view) dismissed by system
https://forums.developer.apple.com/forums/thread/685317 Having read the above discussion, I can add there’s one problematic exception on watchOS to the rule that .didBecomeActiveNotification is fired when the Control Center or any other overlay (such as a long-look notification) is dismissed. It’s when it’s dismissed not by the user, but just allowed to dsimiss itself after a period (as determined by Settings > Wake Duration). This is a problem for any Watch workout app because when one of these overlays is covering the app, it’s considered by the system to be backgounded for purposes of applying the 15% avg CPU load over 60 seconds criteria for being terminated for using too much CPU in the background, so I have discovered. In the case of these overlays covering an app, the app never gets a .didEnterBackgroundNotification call to know that it should attempt to reduce its activity, when the user presses the Side Button to show the Control Center, which is by design, as I understand it. The app does get a .willResignActiveNotification when the Control Center covers it, but there is no corresponding .didBecomeActiveNotification when the system dismisses the Control Center after 2 minutes or so. So if the app reduces its actvity in an attempt to reduce CPU load when covered by the Control Center overlay, it has no way to know it has become active again, in the special case of the Control Center timing out and being dismissed by the system. What could be done to reduce the likelihood of the system terminating the app in this situation, and maintain the app's functionality and usability?
2
0
694
Oct ’24
Defer system gestures in a WatchKit app
Hi, I'm making a WatchKit game app with SpriteKit and Objective-C, and I'm encountering an annoyance where system gestures, namely long-pressing the top and bottom edges to pull Notification/Control Center, interfere with the controls of the game. In iOS, this can be mitigated by using overriding preferredScreenEdgesDeferringSystemGestures in UIViewController, but I couldn't find any equivalent API in any WatchKit class, and searching for similar symbols only yielded a single private API (-[_UISystemAppearanceManager screenEdgesDeferringSystemGestures]) that isn't ever called on watchOS. Any idea how to achieve a similar effect on watchOS?
Replies
1
Boosts
0
Views
619
Activity
Nov ’24
UpdateApplicationContext not working simulator
I am having problems on Xcode13.3.1, Monterey 12.2.1, Apple M1 Max. Sending an UpdateApplicationContext update from a paired iPhone simulator is not received on the paired Apple Watch Simulator in the didRecieveApplicationContext. However, sendMessage from the apple watch simulator does update the iphone simulator app properly. It is however, not possible to send anything from the paired iPhone simulator to the paired Apple Watch Simulator. When working with actual devices everything works properly with WatchConnectivity with passing information back and forth via updateapplicationcontext and sendmessage calls. Can anyone confirm this is a bug or if there is something wrong with my setup?
Replies
2
Boosts
0
Views
2.1k
Activity
Oct ’24
Local notification not working with ios app installed
I have an iOS and watchOS app where both can run independently, I am not using WatchConnectivity to send data back and fourth. The issue I'm having is that if I schedule a local notification on the watch and the phone is unlocked, it will not show on the watch for about 10-15 seconds. If I uninstall the iOS app or have the phone locked, it will show immediately on the watch. To my understanding, this is somewhat the expected functionality but is there a way to bypass it? My app is a timer app and it really should not have a delay.
Replies
2
Boosts
0
Views
684
Activity
Oct ’24
WatchConnectivity Background
WatchOS app is running in the foreground and can wake up the iOS app, but it can't trigger didReceiveMessage in the iOS app. iOS and Watch apps in the foreground can communicate with each other without any issues. However, when my app is closed, even though it wakes up, it cannot communicate. Any ideas? Should I be using a background task ios app side?
Replies
3
Boosts
0
Views
1.3k
Activity
Oct ’24
Text(date, style: .timer) issues with watchOS widget
I'm using Text(date, style: .timer) to display a timer in a WatchOS widget, which works great. The problem is that when the watchface goes dim the time goes from showing the time as "MM:SS" to showing "M minutes". Why is this occuring and how can I change the behavior? I understand it needs to remove seconds to preseve battery life, but why it is putting the word "minutes" at the end, this is messing up my layout. Thanks.
Replies
1
Boosts
0
Views
673
Activity
Oct ’24
My Custom Watchface
Dear all, i am a music conductor and developer, and to fulfill my joy with music i recently developed a WatchFace and some apps for a non-apple watch called "PineTime". My whole development is done in c++ and is available at https://github.com/luto65/PineConductor/ Since I am aswell an apple developer, and most of my friends have apple watches, i am now porting those c++ apps to the apple watch. I just finished the very first one, that is actually a watch Face I now ported it to appleWatch and it looks pretty similar too (here a screenshot from the simulator) I would like to now remove the annoying digital hour on the top right corner, and then sell it as new custom face, together with my other swift-ports of my original c++ applications. Looking forward any feedback.
Replies
1
Boosts
0
Views
549
Activity
Oct ’24
Can I fix this big difference between swiftui preview and actual watch widget layout?
Hi, working on customising my live activity Smart Stack layout for ios18. A thing that is very frustrating is that I consistently looks different for me in the Xcode preview and on the actual watch. See attached screenshots below. The sizes are different, and italic doesn't work on the watch, for example. It makes it time-consuming and unpredictable, so I was wondering if this is a known issue or if I'm doing something wrong, and also can I do anything? thanks edit: this is the layout: var body: some View { VStack(alignment: .center, spacing:4) { HStack(alignment: .center) { IconView(resource: "n-compact-w", bgColor: Color.checkedIn, padding: 2, paddingRight: 6, paddingBottom: 6) .frame(maxWidth: 25, maxHeight: 25).aspectRatio(1, contentMode: .fit) Text("Checked Out") .font(.title3).bold() } Text(status.loc) .font(.headline) .multilineTextAlignment(.center) Text(FormatUtils.getFormattedDateTime(status.time)).font(.subheadline) .multilineTextAlignment(.center).italic() } }
Replies
4
Boosts
0
Views
760
Activity
Oct ’24
WatchOS local notifications delayed
I'm scheduling local notifications on my WatchOS app, but they are always alerting exactly 13 seconds later than scheduled. I have read other users having the exact same issue but there is no solution anywhere. I'm not sure how one is supposed to write any sort of timer app when they are always coming in delayed. Any idea why this occurs and how to resolve it? For now I am subtracting 13 seconds from the end time, but that's not really a solution I'm happy with. Thanks
Replies
2
Boosts
0
Views
1k
Activity
Oct ’24
Live Activities with WatchOS app
Can you initiate a live activity from a Watch app? From what I can tell you can only do it from an iOS app and then have the Watch mirror it, is that true? If you were builiding a standalone timer app for WatchOS for instance and wanted the timer to show up automatically in Smart Stacks when the app is in the background, is this possible? Thanks
Replies
3
Boosts
0
Views
979
Activity
Oct ’24
How to disable Live Activity on Apple Watch while keeping it enabled on iPhone?
I'm using Live Activity features in my app, but I want to customize the user experience across different Apple devices. Specifically, I'd like to: Keep Live Activity enabled and functioning on the iPhone Disable or prevent Live Activity from appearing on the connected Apple Watch Is this level of device-specific control possible with Live Activity? If so, what's the best approach to implement this functionality? What I've tried: I've looked through Apple's documentation on Live Activity, but couldn't find specific information about device-level control. I've experimented with ActivityKit, but haven't found a clear way to distinguish between iPhone and Apple Watch when pushing updates.
Replies
4
Boosts
0
Views
1.7k
Activity
Oct ’24
Optimize watchOS CMSensorDataList parsing
I am trying to parse CMSensorDataList in watchOS. The maximum batch of data is comprised of 30 minutes. The sampling rate is 50Hz, which makes it 90,000 records for 30 minutes. We iterate over each item and finally write the data to a CSV file. As this is a slow processing keeping in view the execution limits of watchOS, the process suspends when app goes to the background. This way, it takes too much time to parse a significant time data. My question is, is there a way we can serialize this CMSensorDataList as a whole and transfer it to the phone using WCSession? Or is there another effective way to achieve this?
Replies
0
Boosts
0
Views
631
Activity
Oct ’24
Getting kclErrorDomain error : 1
Hi, I created an iOS app compatible watchOS app which was running perfectly fine before I updated my Xcode to use iPhone16. But after updating, I started to get kclErrorDomain error: 1 and I am not sure why is it happening after update. I am trying to use coreLocation module as- import Foundation import CoreLocation import Combine class LocationManager: NSObject, ObservableObject, CLLocationManagerDelegate { private var locationManager = CLLocationManager() @Published var location: CLLocation? override init() { super.init() locationManager.delegate = self locationManager.desiredAccuracy = kCLLocationAccuracyBest locationManager.requestWhenInUseAuthorization() locationManager.startUpdatingLocation() } func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { if let location = locations.last { self.location = location print("Updated location: \(location.coordinate.latitude), \(location.coordinate.longitude)") } else { print("No locations received") } } func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) { print("Failed to find user's location: \(error.localizedDescription)") } } and I am trying to use it as- @StateObject private var locationManager = LocationManager() guard let currentLocation = locationManager.location else { signInError = "Location not available" isLoading = false return } let latitude = currentLocation.coordinate.latitude let longitude = currentLocation.coordinate.longitude sendToBackend(email: email, password: password, deviceName: deviceName, deviceModel: deviceModel, deviceIdentifier: deviceIdentifier, latitude: latitude, longitude: longitude) Can someone help me regarding this?
Replies
1
Boosts
0
Views
1.1k
Activity
Oct ’24
How can I use an image for my live activity smartstack layout?
Hello, I am updating my live activity for the new ios18 Smart Stack functionality. I got it working through the WWDC session (Bring your live activities to Apple watch). I'm doing supplementalActivityFamilies([.small]) and then a custom layout in the .small ActivityFamily However, any images I try to use in the Smart Stack just show up as grey squares. (it works on the phone live activity) I suspect it's because my app images are not moved over to the watch? Because I don't have a watch app and such no watch target? If anyone can help me understand if there's anything I can do in order to have a custom image show up on the smart stack, I'd be very grateful.
Replies
3
Boosts
0
Views
869
Activity
Oct ’24
Hand Gesture Controls in an Apple Watch App
Hello everyone! I want to add hand gesture controls to my Apple Watch app. Specifically, I’m looking to implement the following gestures: 1. Tapping index finger and thumb together once 2. Tapping index finger and thumb together twice 3. Fist clench 4. Double fist clench Each gesture should trigger a different action within the app. However, I can’t find any information on how to implement this. I only came across an example using .handGestureShortcut(.primaryAction) (Enabling the double-tap gesture on Apple Watch https://developer.apple.com/documentation/watchOS-Apps/enabling-double-tap), but I need to handle four distinct gestures. Is this possible in watchOS 11? Any guidance or examples would be greatly appreciated! Thank you!
Replies
1
Boosts
0
Views
755
Activity
Oct ’24
CLKComplicationWidgetMigrator not working
I'm trying to migrate from Complication with CLKComplication to WidgetKit. I have implemented the required methods in https://developer.apple.com/documentation/widgetkit/converting-a-clockkit-app, but the migration is not working. There is no evidence that the method for migration is also called. It was the same with Xcode 14.0.1 and Xcode 14.1RC. class ComplicationController: NSObject, CLKComplicationDataSource, CLKComplicationWidgetMigrator { ...     @available(watchOS 9.0, *)     var widgetMigrator: CLKComplicationWidgetMigrator {         return self     }     @available(watchOS 9.0, *)     func widgetConfiguration(from complicationDescriptor: CLKComplicationDescriptor) async -> CLKComplicationWidgetMigrationConfiguration? {         return CLKComplicationStaticWidgetMigrationConfiguration(kind: "MyWidget", extensionBundleIdentifier: "com.example.myapp.mywatchkitapp.mywidget")     } } What's wrong? Has anyone been able to migrate?
Replies
7
Boosts
1
Views
2.6k
Activity
Oct ’24
Casting `[String: Any]` to `[String: any Sendable]`
I have a simple wrapper class around WCSession to allow for easier unit testing. I'm trying to update it to Swift 6 concurrency standards, but running into some issues. One of them is in the sendMessage function (docs here It takes [String: Any] as a param, and returns them as the reply. Here's my code that calls this: @discardableResult public func sendMessage(_ message: [String: Any]) async throws -&gt; [String: Any] { return try await withCheckedThrowingContinuation { (continuation: CheckedContinuation&lt;[String: Any], Error&gt;) in wcSession.sendMessage(message) { response in continuation.resume(returning: response) // ERROR HERE } errorHandler: { error in continuation.resume(throwing: error) } } } However, I get this error: Sending 'response' risks causing data races; this is an error in the Swift 6 language mode Which I think is because Any is not Sendable. I tried casting [String: Any] to [String: any Sendable] but then it says: Conditional cast from '[String : Any]' to '[String : any Sendable]' always succeeds Any ideas on how to get this to work?
Replies
3
Boosts
1
Views
1.6k
Activity
Oct ’24
SwiftUI - WatchKit TextField Keyboard closed immediately before entering text
The TextField Shows and When selected opens the keyboard very slowly and before entering text closes immediately with these messages. <PUICQuickboardController: 0x6000029111f0> [0x6000029111f0-1] presentation watchdog expired! <PUICQuickboardController: 0x6000029111f0> [0x6000029111f0-1] is no longer the current presentation, we must have timed out... This App was working fine in Simulator and test devices until recently.
Replies
0
Boosts
0
Views
450
Activity
Oct ’24
WKApplication.didBecomeActiveNotification not fired when Control Center (or other system overlay view) dismissed by system
https://forums.developer.apple.com/forums/thread/685317 Having read the above discussion, I can add there’s one problematic exception on watchOS to the rule that .didBecomeActiveNotification is fired when the Control Center or any other overlay (such as a long-look notification) is dismissed. It’s when it’s dismissed not by the user, but just allowed to dsimiss itself after a period (as determined by Settings > Wake Duration). This is a problem for any Watch workout app because when one of these overlays is covering the app, it’s considered by the system to be backgounded for purposes of applying the 15% avg CPU load over 60 seconds criteria for being terminated for using too much CPU in the background, so I have discovered. In the case of these overlays covering an app, the app never gets a .didEnterBackgroundNotification call to know that it should attempt to reduce its activity, when the user presses the Side Button to show the Control Center, which is by design, as I understand it. The app does get a .willResignActiveNotification when the Control Center covers it, but there is no corresponding .didBecomeActiveNotification when the system dismisses the Control Center after 2 minutes or so. So if the app reduces its actvity in an attempt to reduce CPU load when covered by the Control Center overlay, it has no way to know it has become active again, in the special case of the Control Center timing out and being dismissed by the system. What could be done to reduce the likelihood of the system terminating the app in this situation, and maintain the app's functionality and usability?
Replies
2
Boosts
0
Views
694
Activity
Oct ’24