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“A Summary of the WWDC25 Group Lab”

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Developer tools group
Hi,Every time I restart my computer and reopen Xcode, a message shows up wich tells to enter the credencials of a member of the Developer tools group in order to enable the Debugging features.My question is where I can add users to this group, so that not-admin-users also can enable it.Thank you in advance,logic3
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14k
Apr ’16
Thursday Education and Enterprise Deployment and Development Lab Notes
Question:Apple's Software Update service is marked as deprecated for macOS Sierra. For environments that want to test Apple updates before distributing them to their Macs, what is Apple's recommended approach for managing Apple software updates?Answer:For upgrade installs, you'll still have the Apple Software Update service available in Server.app.For new installs, the Software Update service will not be listed in Server.app's GUI. However, the functionality is still present in the current DP release and is manageable by the serveradmin command line tool.For new installs, the recommended approach is to use Caching Server. If you want to have management options added to Caching Server, file bugs and feature requests.The current shipping Software Update service for Server.app 5.1.x or older will continue to work. Apple is going to continue to maintain the software update catalogs, so other third-party solutions that use the SUS catalogs should continue to work.Question:Since in-app purchases still cannot be man
0
0
1.1k
Jun ’16
Reply to Foundation Models performance reality check - anyone else finding it slow?
You can probably start with profiling your app with Instruments.app, as discussed in the WWDC25 code along session (starting at 24:32). How to set up the Foundation Models instrument is detailed here. The Foundation Models instrument provides the token numbers the models generate. From there, you can calculate how many tokens per second. The number can vary a lot, but if it is consistently much worse than 20~30/s, I'd suggest that you file a feedback report and share your report ID here. The WWDC25 session also discusses how to use prewarm and includesSchemaInInstructions to improve performance in cases that are appropriate. You can check if that can be applied to your app. Best, —— Ziqiao Chen  Worldwide Developer Relations.
Jul ’25
Favorite Athlete Lab - Cell reuse identifier not found in scope
I'm working on the Favorite Athlete Lab - trying to complete it while accepting I don't understand everything it is teaching yet. I've encountered many challenges with the Lab but the current on is: I've set the cell reuse identifier of my cell to 'drinkCell' in the attributes inspector - but when I use it in the scenes ViewController, I get the error can not find 'drinkCell' in scope. I can see from the teacher resources how this has been solved there, but as far as I can tell, this solution has not be taught at any point so far, and isn't even mention in the subsequent section on cell dequeuing. let cell = tableView.dequeueReusableCell(withIdentifier: drinkCell, for: indexPath) Any help understanding this much appreciated.
0
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615
Jan ’23
how to show picture in summary page of macOS installer
Hi, I added one QR Code in conclusion.html in macOS installer, after the installation complete, the summary page cannot show the picture. I have tried with base64 embeded picture, local picture and load picture from internet, all are not useful. Please let me know how to show the picture in summary page of macOS installer. I used productbuild to build my macOS application. Below is the Distribution.xml language ?xml version=1.0 encoding=utf-8 standalone=no? installer-script minSpecVersion=1.000000 title__PRODUCT__/title background mime-type=image/png file=banner.png scaling=proportional/ welcome file=welcome.html mime-type=text/html / conclusion file=conclusion.html mime-type=text/html / license file=LICENSE.txt/ options customize=never allow-external-scripts=no/ domains enable_localSystem=true / installation-check script=installCheck();/ script function installCheck() { if(!(system.compareVersions(system.version.ProductVersion, '10.6.0') = 0)) { my.result.title = 'Unable to install'; my.res
0
0
1.4k
Mar ’21
Reply to Why doesn’t Transaction.updates emit reliably?
Your listenerTask will update the purchasedProducts/purchasedSubscriptions. If there is any change in the Transaction.updates, you can update the array. With Observable, your views will update accordingly to this change. Take a look at the WWDC25 sample on Understanding StoreKit workflows. https://developer.apple.com/documentation/StoreKit/understanding-storekit-workflows
Topic: App & System Services SubTopic: StoreKit Tags:
Feb ’26
Notes from Thursday Security Lab
System Integrity ProtectionQuestion:Will disabling SIP be available as a choices .XML at install time for the 10.11 OS? If not, what mechanism will be provided for automatic disabling of SIP for use with automated imaging processes for machines?Pain point: Not every environment will be able to access Internet Recovery. At the same time, straight cloning of existing disks is problematic.Answer:SIP is always off in the Recovery environment and the Installer environment. While booted from those environments, you will be able to make changes to a boot disk which is otherwise protected by SIP.SIP-protected files will still appear as restricted when listed with ls's -O, but they can be renamed, moved, deleted or changed.There will be a command line tool to disable SIP in the Recovery environment, separate from the current GUI tool. The GUI tool is in fact going to disappear in favor of the command line tool. This change will likely appear in Developer Beta 2 or Beta 3; check the release notes.Question:The /System/L
6
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6.1k
Jun ’15
App Store Connect does not show subscription summary correctly
Recently App Store Connect, Trends panel, Summary section does not show some of our subscription packages correctly even though we have many sales on those subscriptions. Activations of some of our packages are 0 even we have many sales. Also, the chart does not show some of our packages. I am wondering how to solve this issue. I am attaching a screenshots about this.
4
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1.5k
Sep ’22
Reply to PHP and Swift interoperability
There was some discussion of language interoperability at WWDC25 this year. Please see the WWDC25 session Explore Swift and Java interoperability and the Related sessions listed on that page. Also, for server related stuff you may be interested in this Swift on Server article. For anything else you're thinking of that's not covered in those items, perhaps consider filing an enhancement request or participating in the Swift open source project. You can file an enhancement request using the Feedback Assistant. If you file the request, please post the Feedback number here so we can make sure it gets routed to the right team. If you're not familiar with how to file enhancement requests, take a look at Bug Reporting: How and Why?
Topic: Programming Languages SubTopic: Swift Tags:
Jun ’25
Sales.getReport "Invalid vendor number specified" for Detailed but Summary works
According to Apple's documention for Reporter.jar, (http://help.apple.com/itc/contentreporterguide/en.lproj/static.html) should be able to get Detailed Daily reports but this fails with an incorrect error.[]$ java -jar Reporter.jar p=Reporter.properties Sales.getReport xxxx, Sales, Detailed, Daily, 20170607<?xml version=1.0 encoding=UTF-8 standalone=yes?><Error> <Code>200</Code> <Message>Invalid vendor number specified. Try again.</Message></Error>If I change Detailed to Summary, it works.Why can't I get a detailed report?
3
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1.5k
Jun ’17
Developer tools group
Hi,Every time I restart my computer and reopen Xcode, a message shows up wich tells to enter the credencials of a member of the Developer tools group in order to enable the Debugging features.My question is where I can add users to this group, so that not-admin-users also can enable it.Thank you in advance,logic3
Replies
1
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0
Views
14k
Activity
Apr ’16
Thursday Education and Enterprise Deployment and Development Lab Notes
Question:Apple's Software Update service is marked as deprecated for macOS Sierra. For environments that want to test Apple updates before distributing them to their Macs, what is Apple's recommended approach for managing Apple software updates?Answer:For upgrade installs, you'll still have the Apple Software Update service available in Server.app.For new installs, the Software Update service will not be listed in Server.app's GUI. However, the functionality is still present in the current DP release and is manageable by the serveradmin command line tool.For new installs, the recommended approach is to use Caching Server. If you want to have management options added to Caching Server, file bugs and feature requests.The current shipping Software Update service for Server.app 5.1.x or older will continue to work. Apple is going to continue to maintain the software update catalogs, so other third-party solutions that use the SUS catalogs should continue to work.Question:Since in-app purchases still cannot be man
Replies
0
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0
Views
1.1k
Activity
Jun ’16
Reply to Foundation Models performance reality check - anyone else finding it slow?
You can probably start with profiling your app with Instruments.app, as discussed in the WWDC25 code along session (starting at 24:32). How to set up the Foundation Models instrument is detailed here. The Foundation Models instrument provides the token numbers the models generate. From there, you can calculate how many tokens per second. The number can vary a lot, but if it is consistently much worse than 20~30/s, I'd suggest that you file a feedback report and share your report ID here. The WWDC25 session also discusses how to use prewarm and includesSchemaInInstructions to improve performance in cases that are appropriate. You can check if that can be applied to your app. Best, —— Ziqiao Chen  Worldwide Developer Relations.
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Jul ’25
TestFlight Group rejected
Trying to figure out why my public test group got rejected and what I need to do to rectify and move forward. Is anyone able to help with this?
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0
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0
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63
Activity
Feb ’26
Favorite Athlete Lab - Cell reuse identifier not found in scope
I'm working on the Favorite Athlete Lab - trying to complete it while accepting I don't understand everything it is teaching yet. I've encountered many challenges with the Lab but the current on is: I've set the cell reuse identifier of my cell to 'drinkCell' in the attributes inspector - but when I use it in the scenes ViewController, I get the error can not find 'drinkCell' in scope. I can see from the teacher resources how this has been solved there, but as far as I can tell, this solution has not be taught at any point so far, and isn't even mention in the subsequent section on cell dequeuing. let cell = tableView.dequeueReusableCell(withIdentifier: drinkCell, for: indexPath) Any help understanding this much appreciated.
Replies
0
Boosts
0
Views
615
Activity
Jan ’23
how to show picture in summary page of macOS installer
Hi, I added one QR Code in conclusion.html in macOS installer, after the installation complete, the summary page cannot show the picture. I have tried with base64 embeded picture, local picture and load picture from internet, all are not useful. Please let me know how to show the picture in summary page of macOS installer. I used productbuild to build my macOS application. Below is the Distribution.xml language ?xml version=1.0 encoding=utf-8 standalone=no? installer-script minSpecVersion=1.000000 title__PRODUCT__/title background mime-type=image/png file=banner.png scaling=proportional/ welcome file=welcome.html mime-type=text/html / conclusion file=conclusion.html mime-type=text/html / license file=LICENSE.txt/ options customize=never allow-external-scripts=no/ domains enable_localSystem=true / installation-check script=installCheck();/ script function installCheck() { if(!(system.compareVersions(system.version.ProductVersion, '10.6.0') = 0)) { my.result.title = 'Unable to install'; my.res
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0
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0
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1.4k
Activity
Mar ’21
Reply to Why doesn’t Transaction.updates emit reliably?
Your listenerTask will update the purchasedProducts/purchasedSubscriptions. If there is any change in the Transaction.updates, you can update the array. With Observable, your views will update accordingly to this change. Take a look at the WWDC25 sample on Understanding StoreKit workflows. https://developer.apple.com/documentation/StoreKit/understanding-storekit-workflows
Topic: App & System Services SubTopic: StoreKit Tags:
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Activity
Feb ’26
how to get contacts in a group?
WIth CNContact framework, how to get members in a group like ABGroupCopyArrayOfAllMembers does?thank you,norio ota
Topic: UI Frameworks SubTopic: UIKit Tags:
Replies
2
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0
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183
Activity
Oct ’15
Notes from Thursday Security Lab
System Integrity ProtectionQuestion:Will disabling SIP be available as a choices .XML at install time for the 10.11 OS? If not, what mechanism will be provided for automatic disabling of SIP for use with automated imaging processes for machines?Pain point: Not every environment will be able to access Internet Recovery. At the same time, straight cloning of existing disks is problematic.Answer:SIP is always off in the Recovery environment and the Installer environment. While booted from those environments, you will be able to make changes to a boot disk which is otherwise protected by SIP.SIP-protected files will still appear as restricted when listed with ls's -O, but they can be renamed, moved, deleted or changed.There will be a command line tool to disable SIP in the Recovery environment, separate from the current GUI tool. The GUI tool is in fact going to disappear in favor of the command line tool. This change will likely appear in Developer Beta 2 or Beta 3; check the release notes.Question:The /System/L
Replies
6
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0
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6.1k
Activity
Jun ’15
disable group of controls
What would be the simplest way to enable/disable a group of controls?In Carbon I used to embed the controls in a user pane. I see no Cocoa equivalent.TIAJan E.
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0
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0
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383
Activity
Apr ’17
Cannot add group to build
Today TestFlight is not allowing to add a group to a new build. When clicking on + icon in group column, the groups are disabled.
Replies
3
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0
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719
Activity
Mar ’23
App Store Connect does not show subscription summary correctly
Recently App Store Connect, Trends panel, Summary section does not show some of our subscription packages correctly even though we have many sales on those subscriptions. Activations of some of our packages are 0 even we have many sales. Also, the chart does not show some of our packages. I am wondering how to solve this issue. I am attaching a screenshots about this.
Replies
4
Boosts
0
Views
1.5k
Activity
Sep ’22
Reply to PHP and Swift interoperability
There was some discussion of language interoperability at WWDC25 this year. Please see the WWDC25 session Explore Swift and Java interoperability and the Related sessions listed on that page. Also, for server related stuff you may be interested in this Swift on Server article. For anything else you're thinking of that's not covered in those items, perhaps consider filing an enhancement request or participating in the Swift open source project. You can file an enhancement request using the Feedback Assistant. If you file the request, please post the Feedback number here so we can make sure it gets routed to the right team. If you're not familiar with how to file enhancement requests, take a look at Bug Reporting: How and Why?
Topic: Programming Languages SubTopic: Swift Tags:
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Jun ’25
Sales.getReport "Invalid vendor number specified" for Detailed but Summary works
According to Apple's documention for Reporter.jar, (http://help.apple.com/itc/contentreporterguide/en.lproj/static.html) should be able to get Detailed Daily reports but this fails with an incorrect error.[]$ java -jar Reporter.jar p=Reporter.properties Sales.getReport xxxx, Sales, Detailed, Daily, 20170607<?xml version=1.0 encoding=UTF-8 standalone=yes?><Error> <Code>200</Code> <Message>Invalid vendor number specified. Try again.</Message></Error>If I change Detailed to Summary, it works.Why can't I get a detailed report?
Replies
3
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0
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1.5k
Activity
Jun ’17
How to group UI controls into one group for adding constraints for Inferface Builder?
Well, I tried that technique but the problem is that even if I SHIFT click a bunch of UI controls, then things don't group but apply independently.What to do?
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2
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0
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1.8k
Activity
Jun ’16