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“A Summary of the WWDC25 Group Lab”

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[App Groups] Publishing apps sharing App Group for Sign-in
I am working on two applications that provide complementary functionality - one is a main app with authentication flow and the other handles additional functionalities within my service. I would like to publish these as separate apps on the App Store but allow them to share data through an App Group, specifically to enable sign-in state to carry across. The flow would be: Main app authenticates the user and saves an authentication token to the shared App Group container Second app launches and checks the container for this token. If present, it signs the user in automatically. In this way the Main app handles all login functionality which enables certain features in the other app(s) when logged in state is present. My questions are: Would this violate any App Store guidelines around app functionality distribution or data sharing? I intend to provide a technical rationale during review on why two apps are necessary. Would Apple allow such an implementation? What best practices should I follow
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792
Jan ’24
Does group messaging work properly?
I've got the beta installed on my iPad Mini 2. I just happened to look at the message responses to a group message that I sent which originated from my iPhone 6 Plus (on iOS 8.3) which was sent to a mix of iMessage and regular SMS accounts, and while my original group message was contained in a group message thread, all the responses to it came back in individual threads. I verified that on my iPhone they are all coming back as part of the group message thread. Only seems to be an issue on the iPad and on the iPad with iOS 9 (previous group messaging on iOS 8.3 and below worked as expected).I also checked in Settings -> Messages to see if the Group Messaging option was enabled, and it isn't there anymore. (For that matter, neither is MMS Messaging.) Can anyone else verify that Group Messaging is or isn't working for them as expected?
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158
Jun ’15
How to test Subscription Groups?
We want to switch our subscription to subscription group but we can't find any way to testUpgrade.Downgrade.Crossgrade.When we try to purchase a product from the same group we get a message (from sandbox) You're currently subscribed to this. with [OK] and [Manage] options.However the [Manage] option is not working on the sandbox.How can we test this? Is it only testable on live environment and not sandbox?Thanks
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1.1k
Sep ’16
App group broken on Sequoia
We've got an in-house Swift macOS desktop app with a FileProvider extension, which has been working fine on various machines up through Sonoma (and still does). We've just installed it on a Sequoia machine, and on it the FileProvider extension has lost the ability to access the shared app group. It can neither log to the Group Containers folder under ~/Library, nor access the pipe to the main app. The group name is formatted as group.XXXXXXXXXX.com.orgname.appname in both targets. I'm not sure why it combines the iOS and macOS conventions, with both the group prefix and the teamIdentifier one -- it was first built some time before the point in 2025 when macOS supported iOS-style groups -- but again, it's been working. For the record, The provisioning profile for EMPFileProvider has the App Groups capability enabled, and the App Groups capability is present in both build targets in Xcode. The existing group identifier is registered on the
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348
Feb ’26
Tuesday File Systems Lab Notes
Question:Can an APFS container span multiple physical devices?Answer:Not right now. Apple's looking at that, in relation to Fusion drives. No RAID or RAID-like support is planned for APFS.Question:How does CoreStorage interact with APFS during the APFS conversion process?Answer:The plan is to have the APFS conversion process read the Core Storage plus HFS+ metadata and convert them to an APFS container. For encrypted Core Storage volumes, you will likely be prompted for an account password or recovery key before the conversion process begins.Question:Is fdesetup going to be the tool for interacting with APFS encryption, or will there be a new command line tool for managing APFS encryption? If there's a new tool, what is it?Answer:To be determined because Apple still looking at this.With regards to encryption, Apple has started work on this part of APFS but the work is not yet complete.Question:Can APFS recovery key(s) be escrowed when enabling encryption? The goal is to store the recovery key(s) somewhere for
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1.5k
Jun ’16
Reply to RealityKit Mesh with USDZ 3D Model
@lijiaxu Adding to what Greg said, I recommend reviewing the section Prepare assets for gameplay for our WWDC25 sample Petite Asteroids. This article describes the process of loading complex geometry and using it to generate a collision mesh. Thank you for your question!
Topic: Spatial Computing SubTopic: General Tags:
Jul ’25
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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1.8k
Activity
Jun ’16
Creating Groups in Testflight
Does the ability to create groups for external testflight users no longer exisit? I was able to do in last week, but it does not exist this week.
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2
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422
Activity
Aug ’15
Group Identifier Error
An Application Group with Identifier 'group.com.aaa.aaa.onesignal' is not available. Please enter a different string. How can I Fix this error? I need to add it in this format.
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1
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87
Activity
Aug ’25
watchOS 2 beta 1 last week's activity summary typo
Has anybody noticed that there is a typo in the watchOS 2 beta 1 Last Week's Acitivity Summary notification. I have included a screenshot of the typo. This is actually kind of funny. https://www.dropbox.com/s/tu14f34olgx43yk/IMG_0462.jpg?dl=0
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0
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0
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185
Activity
Jun ’15
[App Groups] Publishing apps sharing App Group for Sign-in
I am working on two applications that provide complementary functionality - one is a main app with authentication flow and the other handles additional functionalities within my service. I would like to publish these as separate apps on the App Store but allow them to share data through an App Group, specifically to enable sign-in state to carry across. The flow would be: Main app authenticates the user and saves an authentication token to the shared App Group container Second app launches and checks the container for this token. If present, it signs the user in automatically. In this way the Main app handles all login functionality which enables certain features in the other app(s) when logged in state is present. My questions are: Would this violate any App Store guidelines around app functionality distribution or data sharing? I intend to provide a technical rationale during review on why two apps are necessary. Would Apple allow such an implementation? What best practices should I follow
Replies
0
Boosts
0
Views
792
Activity
Jan ’24
Does group messaging work properly?
I've got the beta installed on my iPad Mini 2. I just happened to look at the message responses to a group message that I sent which originated from my iPhone 6 Plus (on iOS 8.3) which was sent to a mix of iMessage and regular SMS accounts, and while my original group message was contained in a group message thread, all the responses to it came back in individual threads. I verified that on my iPhone they are all coming back as part of the group message thread. Only seems to be an issue on the iPad and on the iPad with iOS 9 (previous group messaging on iOS 8.3 and below worked as expected).I also checked in Settings -> Messages to see if the Group Messaging option was enabled, and it isn't there anymore. (For that matter, neither is MMS Messaging.) Can anyone else verify that Group Messaging is or isn't working for them as expected?
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0
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158
Activity
Jun ’15
Reply to How to fetch Lab Name and Lab Result Panel from Health Kit
clinicalRecord.sourceRevision.source.name is the right place to get the provider name from test panels today are not exposed via the API. Note that they are not consistently implemented, and you can create your own panels based on lab codes and the lab results' date/time.
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Sep ’21
ICloud vs. App Groups
I just seen a discussion that had to do with App Groups. What’s the difference between App Groups and iCloud? Thanks, Dan Uff
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1
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487
Activity
Sep ’20
Reply to NSAllowsArbitraryLoads or NSExceptionAllowsInsecureHTTPLoads flags are not working after deploymnent of the app to device.
I meant lab, dev, QA ...
Topic: App & System Services SubTopic: Core OS Tags:
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Mar ’21
Reply to 403 error on EAS build
@kate-lab were you able to resolve your issue?
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Mar ’24
How to test Subscription Groups?
We want to switch our subscription to subscription group but we can't find any way to testUpgrade.Downgrade.Crossgrade.When we try to purchase a product from the same group we get a message (from sandbox) You're currently subscribed to this. with [OK] and [Manage] options.However the [Manage] option is not working on the sandbox.How can we test this? Is it only testable on live environment and not sandbox?Thanks
Replies
2
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0
Views
1.1k
Activity
Sep ’16
App group broken on Sequoia
We've got an in-house Swift macOS desktop app with a FileProvider extension, which has been working fine on various machines up through Sonoma (and still does). We've just installed it on a Sequoia machine, and on it the FileProvider extension has lost the ability to access the shared app group. It can neither log to the Group Containers folder under ~/Library, nor access the pipe to the main app. The group name is formatted as group.XXXXXXXXXX.com.orgname.appname in both targets. I'm not sure why it combines the iOS and macOS conventions, with both the group prefix and the teamIdentifier one -- it was first built some time before the point in 2025 when macOS supported iOS-style groups -- but again, it's been working. For the record, The provisioning profile for EMPFileProvider has the App Groups capability enabled, and the App Groups capability is present in both build targets in Xcode. The existing group identifier is registered on the
Replies
8
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0
Views
348
Activity
Feb ’26
Tuesday File Systems Lab Notes
Question:Can an APFS container span multiple physical devices?Answer:Not right now. Apple's looking at that, in relation to Fusion drives. No RAID or RAID-like support is planned for APFS.Question:How does CoreStorage interact with APFS during the APFS conversion process?Answer:The plan is to have the APFS conversion process read the Core Storage plus HFS+ metadata and convert them to an APFS container. For encrypted Core Storage volumes, you will likely be prompted for an account password or recovery key before the conversion process begins.Question:Is fdesetup going to be the tool for interacting with APFS encryption, or will there be a new command line tool for managing APFS encryption? If there's a new tool, what is it?Answer:To be determined because Apple still looking at this.With regards to encryption, Apple has started work on this part of APFS but the work is not yet complete.Question:Can APFS recovery key(s) be escrowed when enabling encryption? The goal is to store the recovery key(s) somewhere for
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2
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0
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1.5k
Activity
Jun ’16
Reply to Will Apple Intelligence Support Third-Party LLMs or Custom AI Agent Integrations?
Hello, Thank you for your interest in Apple Intelligence, ChatGPT and agentic AI. We're unable to speak about roadmap plans, and in general about any unannounced technologies (real, imagined or hallucinated). For the latest announcements please attend WWDC25.
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May ’25
Reply to RealityKit Mesh with USDZ 3D Model
@lijiaxu Adding to what Greg said, I recommend reviewing the section Prepare assets for gameplay for our WWDC25 sample Petite Asteroids. This article describes the process of loading complex geometry and using it to generate a collision mesh. Thank you for your question!
Topic: Spatial Computing SubTopic: General Tags:
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Jul ’25