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How do I cause a timer to fire while the app is in the background?
When I write code for a timer like below, the timer doesn't fire if the device is locked. How do I cause the code in the timer closure to run when the app is in the background? Are there any other ways to cause specific code to run at a certain time when the app is in the background? func setTimer(alarm: UTIAlarm) { let timer = Timer(fire: alarm.date!, interval: 0, repeats: false) { (timer: Timer) in print("timer fire \(self.dateFormatter.string(from: alarm.date!))") do { try AVAudioSession.sharedInstance().setActive(true, options: .notifyOthersOnDeactivation) } catch { print("Failed to setActive AVAudioSession from timer closure.") print(error.localizedDescription) } let predicate = MPMediaPropertyPredicate(value: alarm.mediaItem!.title, forProperty: MPMediaItemPropertyTitle) let query = MPMediaQuery() query.addFilterPredicate(predicate) self.playerController!.setQueue(with: query) self.playerController!.play() } runLoop.add(timer, forMode: .default) timers.append(timer) }
Topic: UI Frameworks SubTopic: UIKit Tags:
7
0
3.8k
Oct ’21
Environment variables
In Info.plist of my Xcode project, I see for instance "Executable file" is set to "$(EXECUTABLE_NAME)". I believe that "$(EXECUTABLE_NAME)" is called an environment variable. What I'd like to know is where is that environment variable set. I'd like to see where all the environment variables are set so I can use those values.
6
0
12k
Sep ’21
Transformable properties errors
I'm getting the following error messages:CoreData: annotation: Failed to load optimized model at path '/var/containers/Bundle/Application/0E3DF5FB-DA57-4A63-98FE-59E2961C6F50/Routes.app/GoogleMaps.bundle/GMSCacheStorage.momd/StorageWithTileProto.omo'2020-01-11 17:19:50.885657-0600 Routes[1913:394464] [error] fault: One or more models in this application are using transformable properties with transformer names that are either unset, or set to NSKeyedUnarchiveFromDataTransformerName. Please switch to using "NSSecureUnarchiveFromData" or a subclass of NSSecureUnarchiveFromDataTransformer instead. At some point, Core Data will default to using "NSSecureUnarchiveFromData" when nil is specified, and transformable properties containing classes that do not support NSSecureCoding will become unreadable.. . .CoreData: warning: Property 'value' on Entity 'GMSCacheProperty' is using nil or an insecure NSValueTransformer. Please switch to using "NSSecureUnarchiveFromData" or a subclass of NSSecureUnarchiveFromDataTransformer instead.. . .2020-01-11 17:20:08.491131-0600 Routes[1913:394093] Can't end BackgroundTask: no background task exists with identifier 13 (0xd), or it may have already been ended. Break in UIApplicationEndBackgroundTaskError() to debug.I don't know what the problem is because I am not using any CoreData Attributes of type Transformable nor is there any code in my project about anything transformable. I have searched with Google for this error, but have not found a solution that works.
4
0
3.0k
Sep ’21
Does unifiedContacts(matching:keysToFetch:) return only unified contacts and leave out non-unified contacts?
When I use the Contacts Framework with Swift for iOS 15 using Xcode 13, when I use CNContactStore instance method unifiedContacts(matching:keysToFetch:), what happens to those CNContact objects that are not linked with any other CNContact objects, would they be returned as non-unified contacts, or would they be left out since they are non-unified contacts?
2
0
906
Nov ’21
Why is it when I set UITableViewController navigationItem.searchController with UISearchController, navigation.searchController still is nil?
For some reason, when I set UITableViewController navigationItem.searchController with a UISearchController, it doesn't take it. Here is my code: let searchController = UISearchController(searchResultsController: nil) if #available(iOS 11.0, *) { print("?", navigationItem.searchController) print("!", searchController) navigationItem.searchController? = searchController print("?", navigationItem.searchController) } else { tableView.tableHeaderView = searchController.searchBar } Here is the debug window: ? nil ! <UISearchController: 0x105077600> ? nil
1
0
420
Dec ’21
Is the Console app an app that runs on iOS that I can get straight from the App Store?
Would someone explain something about this content I got from this URL to Apple documentation? Logging ”You view log messages using the Console app, log command-line tool, or Xcode debug console. You can also access log messages programmatically using the OSLogframework.” I’m not sure what Console app runs on. Is that an app on macOS? I’m not really sure what to ask really. I’m looking for a way to get debug data from people using my app who download it from the App Store, so they won’t be using TestFlight. I did a search on Google but didn’t find what I needed to know. I’m trying to connect to the App Store on my iPhone, but it’s not able to connect. That seems to happen often for some reason. I wonder if this is talking about the Console app that I’m wondering about? https://help.dayoneapp.com/en/articles/470117-using-ios-console
1
0
3.7k
Jan ’22
What to use instead of the deprecated ABAddressBookRegisterExternalChangeCallback(::_:) function?
I found information about the ABAddressBookRegisterExternalChangeCallback(::_:) function of the Address Book Framework, but that function has been deprecated, and only works with iOS 2.0–9.0. I don't see a function in the Contacts Framework that does what that function does. Is there some way that the Contacts Framework could do something that this function provided a solution for?
1
0
1.1k
Mar ’22
Is there a way to cause my app or a background task start running automatically when the iOS device is turned back on after being turned off?
I think I'm only entertaining wishful thinking, but I hope it is possible to somehow cause my iOS app or a background task to start up when the iOS device starts up, like when it was turned off and then turned back on. Does even the user of the device have a way to do this in iOS? I saw some threads saying something like this might be possible using MDM or supervised devices or kiosk mode or guided access. Those all seem to require the user or administrators to do some setting up. I want my app or background task to be able to do what I mentioned right as it comes after it is installed from App Store.
1
0
518
Mar ’22
How do I make a link to a specific answer instead of the entire post?
How do I get the answer id of an answer in a thread? I would like to know how to create a link to a specific answer of a post so I can refer to a specific answer rather than to the top of the page of the post. I noticed one link went to this address - https://developer.apple.com/forums/thread/67535?answerId=195112022#195112022. That's where I learned about the "answerId" item.
2
0
677
Mar ’22
"Failed to prepare device for development." with Xcode 13.2.1 and iOS 15.4 device
I'm getting message "This operation can fail if the version of the OS on the device is incompatible with the installed version of Xcode. You may also need to restart your mac and device in order to correctly detect compatibility." when I try to run an Xcode iOS project on my iPhone 8. I'm using Xcode 13.2.1 and iOS 15.4 on my iPhone 8. This post in this forums gives the solution to restart the iOS device and I did that and also restarted the mac. My Mac has macOS Monterey 12.3. My Xcode, Mac, and iPhone 8 all have the most recent updates. That post gives an answer for the same problem but with iOS 15.2. I have recently changed settings in my iPhone 8 in Accessibility. Could that affect anything?
4
0
4.2k
Jun ’23
UnicornChat
Anyone ever tested Apple's sample code for SiriKit UnicornChat? How do I figure out what to say to Siri to see if the sample works?
Replies
2
Boosts
0
Views
1.8k
Activity
Nov ’22
How do I cause a timer to fire while the app is in the background?
When I write code for a timer like below, the timer doesn't fire if the device is locked. How do I cause the code in the timer closure to run when the app is in the background? Are there any other ways to cause specific code to run at a certain time when the app is in the background? func setTimer(alarm: UTIAlarm) { let timer = Timer(fire: alarm.date!, interval: 0, repeats: false) { (timer: Timer) in print("timer fire \(self.dateFormatter.string(from: alarm.date!))") do { try AVAudioSession.sharedInstance().setActive(true, options: .notifyOthersOnDeactivation) } catch { print("Failed to setActive AVAudioSession from timer closure.") print(error.localizedDescription) } let predicate = MPMediaPropertyPredicate(value: alarm.mediaItem!.title, forProperty: MPMediaItemPropertyTitle) let query = MPMediaQuery() query.addFilterPredicate(predicate) self.playerController!.setQueue(with: query) self.playerController!.play() } runLoop.add(timer, forMode: .default) timers.append(timer) }
Topic: UI Frameworks SubTopic: UIKit Tags:
Replies
7
Boosts
0
Views
3.8k
Activity
Oct ’21
Environment variables
In Info.plist of my Xcode project, I see for instance "Executable file" is set to "$(EXECUTABLE_NAME)". I believe that "$(EXECUTABLE_NAME)" is called an environment variable. What I'd like to know is where is that environment variable set. I'd like to see where all the environment variables are set so I can use those values.
Replies
6
Boosts
0
Views
12k
Activity
Sep ’21
Error no accounts with iTunes Connect access have been found
Why am I getting an error message when I try to validate an archive that says, "No accounts with iTunes Connect access have been found for the team. iTunes Connect access is required for App Store distribution."?I have never gotten this error message before. What should I do?
Replies
28
Boosts
0
Views
17k
Activity
Sep ’23
How to check for return key tap in text view?
How would I check for a return key tap on the keyboard when a text view is first responder? So far I think I have to check the text parameter in the shouldChangeTextIn callback method of UITextViewDelegate. How would I check whether text is a return?
Topic: UI Frameworks SubTopic: UIKit Tags:
Replies
6
Boosts
0
Views
5.2k
Activity
Sep ’22
Transformable properties errors
I'm getting the following error messages:CoreData: annotation: Failed to load optimized model at path '/var/containers/Bundle/Application/0E3DF5FB-DA57-4A63-98FE-59E2961C6F50/Routes.app/GoogleMaps.bundle/GMSCacheStorage.momd/StorageWithTileProto.omo'2020-01-11 17:19:50.885657-0600 Routes[1913:394464] [error] fault: One or more models in this application are using transformable properties with transformer names that are either unset, or set to NSKeyedUnarchiveFromDataTransformerName. Please switch to using "NSSecureUnarchiveFromData" or a subclass of NSSecureUnarchiveFromDataTransformer instead. At some point, Core Data will default to using "NSSecureUnarchiveFromData" when nil is specified, and transformable properties containing classes that do not support NSSecureCoding will become unreadable.. . .CoreData: warning: Property 'value' on Entity 'GMSCacheProperty' is using nil or an insecure NSValueTransformer. Please switch to using "NSSecureUnarchiveFromData" or a subclass of NSSecureUnarchiveFromDataTransformer instead.. . .2020-01-11 17:20:08.491131-0600 Routes[1913:394093] Can't end BackgroundTask: no background task exists with identifier 13 (0xd), or it may have already been ended. Break in UIApplicationEndBackgroundTaskError() to debug.I don't know what the problem is because I am not using any CoreData Attributes of type Transformable nor is there any code in my project about anything transformable. I have searched with Google for this error, but have not found a solution that works.
Replies
4
Boosts
0
Views
3.0k
Activity
Sep ’21
Does unifiedContacts(matching:keysToFetch:) return only unified contacts and leave out non-unified contacts?
When I use the Contacts Framework with Swift for iOS 15 using Xcode 13, when I use CNContactStore instance method unifiedContacts(matching:keysToFetch:), what happens to those CNContact objects that are not linked with any other CNContact objects, would they be returned as non-unified contacts, or would they be left out since they are non-unified contacts?
Replies
2
Boosts
0
Views
906
Activity
Nov ’21
Why is it when I set UITableViewController navigationItem.searchController with UISearchController, navigation.searchController still is nil?
For some reason, when I set UITableViewController navigationItem.searchController with a UISearchController, it doesn't take it. Here is my code: let searchController = UISearchController(searchResultsController: nil) if #available(iOS 11.0, *) { print("?", navigationItem.searchController) print("!", searchController) navigationItem.searchController? = searchController print("?", navigationItem.searchController) } else { tableView.tableHeaderView = searchController.searchBar } Here is the debug window: ? nil ! <UISearchController: 0x105077600> ? nil
Replies
1
Boosts
0
Views
420
Activity
Dec ’21
Is the Console app an app that runs on iOS that I can get straight from the App Store?
Would someone explain something about this content I got from this URL to Apple documentation? Logging ”You view log messages using the Console app, log command-line tool, or Xcode debug console. You can also access log messages programmatically using the OSLogframework.” I’m not sure what Console app runs on. Is that an app on macOS? I’m not really sure what to ask really. I’m looking for a way to get debug data from people using my app who download it from the App Store, so they won’t be using TestFlight. I did a search on Google but didn’t find what I needed to know. I’m trying to connect to the App Store on my iPhone, but it’s not able to connect. That seems to happen often for some reason. I wonder if this is talking about the Console app that I’m wondering about? https://help.dayoneapp.com/en/articles/470117-using-ios-console
Replies
1
Boosts
0
Views
3.7k
Activity
Jan ’22
What is the default assumption if Apple Documentation does not say whether a certain method can or cannot be run on a background thread?
If Apple Documentation does not say whether a certain method is allowed to be run on a background thread other than the main UI thread, does that mean it can or cannot be run on a background thread?
Replies
2
Boosts
0
Views
519
Activity
Jan ’22
What to use instead of the deprecated ABAddressBookRegisterExternalChangeCallback(::_:) function?
I found information about the ABAddressBookRegisterExternalChangeCallback(::_:) function of the Address Book Framework, but that function has been deprecated, and only works with iOS 2.0–9.0. I don't see a function in the Contacts Framework that does what that function does. Is there some way that the Contacts Framework could do something that this function provided a solution for?
Replies
1
Boosts
0
Views
1.1k
Activity
Mar ’22
What do <T> and <S> mean as distinguished from each other.
I noticed that when there is a generic class, there is a , which I decided must use T for "Type". What does the S mean in . I see it in the function definition for the instance function initialize(from: S) -> (S.Iterator, UnsafeMutableBufferPointer.Index) of UnsafeMutableBufferPointer.
Replies
3
Boosts
0
Views
902
Activity
Mar ’22
Is there a way to cause my app or a background task start running automatically when the iOS device is turned back on after being turned off?
I think I'm only entertaining wishful thinking, but I hope it is possible to somehow cause my iOS app or a background task to start up when the iOS device starts up, like when it was turned off and then turned back on. Does even the user of the device have a way to do this in iOS? I saw some threads saying something like this might be possible using MDM or supervised devices or kiosk mode or guided access. Those all seem to require the user or administrators to do some setting up. I want my app or background task to be able to do what I mentioned right as it comes after it is installed from App Store.
Replies
1
Boosts
0
Views
518
Activity
Mar ’22
How do I make a link to a specific answer instead of the entire post?
How do I get the answer id of an answer in a thread? I would like to know how to create a link to a specific answer of a post so I can refer to a specific answer rather than to the top of the page of the post. I noticed one link went to this address - https://developer.apple.com/forums/thread/67535?answerId=195112022#195112022. That's where I learned about the "answerId" item.
Replies
2
Boosts
0
Views
677
Activity
Mar ’22
"Failed to prepare device for development." with Xcode 13.2.1 and iOS 15.4 device
I'm getting message "This operation can fail if the version of the OS on the device is incompatible with the installed version of Xcode. You may also need to restart your mac and device in order to correctly detect compatibility." when I try to run an Xcode iOS project on my iPhone 8. I'm using Xcode 13.2.1 and iOS 15.4 on my iPhone 8. This post in this forums gives the solution to restart the iOS device and I did that and also restarted the mac. My Mac has macOS Monterey 12.3. My Xcode, Mac, and iPhone 8 all have the most recent updates. That post gives an answer for the same problem but with iOS 15.2. I have recently changed settings in my iPhone 8 in Accessibility. Could that affect anything?
Replies
4
Boosts
0
Views
4.2k
Activity
Jun ’23