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“A Summary of the WWDC26 Group Lab”

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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
Initiating group facetime WatchOS
Is there are URL scheme available to WatchOS that will start a group call? The facetime-group prefix prompts the user to start on iOS, but is unsupported on watchOS. Additionally, on WatchOS, the user can manually select contacts to add to an existing facetime audio call. URL scheme example that worked on iOS: facetime-group://?remoteMembers=+12345678901;+23456789012&isVideoEnabled=1 Console warning when attempting on WatchOS: -[SPApplicationDelegate extensionConnection:openSystemURL:]:2418: URL with scheme facetime-group not supported.
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426
Sep ’24
Reply to Co channel interference resolution
Please see our previous response to your question. https://developer.apple.com/forums/thread/830458?answerId=890688022#890688022 If you have any follow up questions, feel free to continue the conversation there for conciseness. If you have questions tying this into the LiveCommunicationKit and Push-To-Talk Q&A features announced at WWDC26, we have the relevant engineering team here to answer questions! Thank you!  Travis
Topic: Core OS SubTopic:
LiveCommunicationKit and Push-To-Talk Q&A
Tags:
1w
Apple Watch Group Notification
I recently moved my watch app from InterfaceController to the SwiftUI LifeCycle, but I've encountered some issues. In my app, I'm using group notifications. Before I moved to the SwiftUI LifeCycle, when I received a group notification with the same thread identifier, it appeared as a stack in the notification center of the watch. When I touched the stack, it extended with individual notifications. However, after moving to the SwiftUI LifeCycle, when I touch the stack, it only shows the first notification of the stack and doesn't display the extended notifications. Do I need a custom group notification view in the SwiftUI LifeCycle, similar to the Message App? Is there any other way to use the previous static group notification view? Please help me!
0
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517
Apr ’23
imessage group chat confusion
So I am in a group chat with my family. We’ve had this groupchat established for a long time, and none of us have ever added anyone else to it. Somehow last night, a different family member joined our group chat and started texting us, but none of the original chat members added her, not even accidentally. This is the second time this has happened, and we have no idea how they are inserting themselves into our group chat. We are all iphone users, including the person that is somehow adding themselves to our group chat. All of us use different Apple ID accounts as well as different phone numbers, and that’s the same for the person adding themselves, so I’m truly at a loss for how this is happening.
2
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290
Jan ’25
What is the point of thread-id/grouping in push notifications if grouping depends upon user preferences?
There's plenty of articles out there about programatically grouping push notifications. However I have tried setting the thread-id in the push payload when sending a push, or setting the threadIdentifier for a received push in a notification service extension to be the same for several pushes. But if within the iPhone Settings / Notifications the user selects to display pushes as List and turns off Notification Grouping, then each notification resulting from the push appears on its own separately. Is there something other than thread-id/threadidentifier that is used to programmatically group them? If not then whats the point of these as grouping and display is actually under the control of user.
1
0
117
Mar ’25
Xcode Expands All Groups
Hi!(In advance I'm using Xcode 9.2 (9C40b))Xcode is great but one thing that grids my gears, is that whenever I add something(New file, Group, etc) to the file tree all groups gets expanded😢 This gets really annoying beacause of having multiple groups and having to minimize everything over and over again.I can't be the only one with this issue, or am I doing something wrong?If this is just a bug in Xcode, is there a future update coming to fix this?Regards/Guthner
0
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290
Feb ’18
AU Lab midi mapping (host automation?) broken?
Or did it ever work? I just started trying to get a small setup with a single AU happening. I can play notes and assign midi CC #s to parameters in a plugin, but Command-clicking to open the midi mappings window does only that – I move a midi control as it directs but nothing happens. Notes no longer play and the application is not responding. Clicking cancel in the midi mapping window results in a beachball and I have to force-quit. I've had zero luck with multiple google searches on a variety of terms, so I'm posting here. TIA for any help! I have the latest AU Lab (2.3, created March 6, 2020) on a fresh install of Mojave (10.14.6). BTW - I am assuming, perhaps incorrectly, that midi mapping and host automation are the same thing. Maybe I need to be set straight there. I'm curious though – if Apple means this program to be a test bed for AUs that devs build, how could it not have some way to test host automation? This makes no sense to me.
0
0
458
Aug ’20
App Group File Ownership
Files can be written and read from the App Group by multipler apps. When an app is removed, its files are also removed.It looks like files in the App Group folder are owned by the app that created them. So, if app A adds a file to the App Group and then app A is removed, the file in the App Group is also removed. If App B reads that file, it better deal gracefully with it disappearing.What if a file in the App Group is created by app A and then modified by App B? Does ownship transfer to app B or remain with app A? If app A is removed after app B modifies the file, will it be removed?
1
0
646
Jan ’17
Sign In With Apple and App Grouping?
Sign In With Apple has a group apps category: https://help.apple.com/developer-account/?lang=en#/dev04f3e1cfcHowever, thats the only information I could find for sign in with apple and group apps.What is the significants of group apps with sign in with apple? What does it do? How does one use it?Does it support the following use-case?: I have a primary app and a child app. If I sign in with apple with the primary app, and then i want to use the secondary app, do i have to sign in again? Or am I already signed in because I have signed in with the primary app? Or can I architect it in such a way that allows me to sign in to one of the grouped apps, and then stay signed in when using another grouped app?
2
0
5k
Oct ’19
Multiple Subscription Group Approvals
My app creates new subscription groups via the app store connect api. Our end users subscribe to creators. Each creator has their own subscription group within app store connect. We will create hundreds, even thousands of subscription groups via the api over time. Does Apple have to approve each subscription group before they can be accessed via the app by end users? Or do they just approve the first one and allow us to create new subscriptions groups in real time -- over time via the API without additional approvals?
0
0
474
Feb ’23
Options to delete keywords/groups
Hello,I can't delete keywords now from the active group (also I can't copy them) and can't delete inactive group — there is simply no button for that.I think that is the really necessary option.Any plans to add it?Thanks.
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24
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11k
Activity
Oct ’16
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
Replies
2
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0
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1.5k
Activity
Jun ’16
Group Activity and AVAudioSession
For an App in the PlaybackAndRecording Category, would entering a Group Activity Session change the Category and Mode since FaceTime is ongoing? will we still have access to Microphone locally using, e.g. AVAudioEngine? if yes, will the presence of FaceTime force VoiceChat mode and VPIO in our session? Thanks in advance.
Replies
0
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0
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969
Activity
Jun ’21
Initiating group facetime WatchOS
Is there are URL scheme available to WatchOS that will start a group call? The facetime-group prefix prompts the user to start on iOS, but is unsupported on watchOS. Additionally, on WatchOS, the user can manually select contacts to add to an existing facetime audio call. URL scheme example that worked on iOS: facetime-group://?remoteMembers=+12345678901;+23456789012&isVideoEnabled=1 Console warning when attempting on WatchOS: -[SPApplicationDelegate extensionConnection:openSystemURL:]:2418: URL with scheme facetime-group not supported.
Replies
0
Boosts
0
Views
426
Activity
Sep ’24
Reply to Co channel interference resolution
Please see our previous response to your question. https://developer.apple.com/forums/thread/830458?answerId=890688022#890688022 If you have any follow up questions, feel free to continue the conversation there for conciseness. If you have questions tying this into the LiveCommunicationKit and Push-To-Talk Q&A features announced at WWDC26, we have the relevant engineering team here to answer questions! Thank you!  Travis
Topic: Core OS SubTopic:
LiveCommunicationKit and Push-To-Talk Q&A
Tags:
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Activity
1w
Where are the groups for the External Testers
Seems that the groups are gone for the External testers??!! Such a nice feature to organise a little bit things in my list of testers. Now, all of a sudden the groups are gone? Why?
Replies
2
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0
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338
Activity
Aug ’15
Apple Watch Group Notification
I recently moved my watch app from InterfaceController to the SwiftUI LifeCycle, but I've encountered some issues. In my app, I'm using group notifications. Before I moved to the SwiftUI LifeCycle, when I received a group notification with the same thread identifier, it appeared as a stack in the notification center of the watch. When I touched the stack, it extended with individual notifications. However, after moving to the SwiftUI LifeCycle, when I touch the stack, it only shows the first notification of the stack and doesn't display the extended notifications. Do I need a custom group notification view in the SwiftUI LifeCycle, similar to the Message App? Is there any other way to use the previous static group notification view? Please help me!
Replies
0
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0
Views
517
Activity
Apr ’23
imessage group chat confusion
So I am in a group chat with my family. We’ve had this groupchat established for a long time, and none of us have ever added anyone else to it. Somehow last night, a different family member joined our group chat and started texting us, but none of the original chat members added her, not even accidentally. This is the second time this has happened, and we have no idea how they are inserting themselves into our group chat. We are all iphone users, including the person that is somehow adding themselves to our group chat. All of us use different Apple ID accounts as well as different phone numbers, and that’s the same for the person adding themselves, so I’m truly at a loss for how this is happening.
Replies
2
Boosts
0
Views
290
Activity
Jan ’25
What is the point of thread-id/grouping in push notifications if grouping depends upon user preferences?
There's plenty of articles out there about programatically grouping push notifications. However I have tried setting the thread-id in the push payload when sending a push, or setting the threadIdentifier for a received push in a notification service extension to be the same for several pushes. But if within the iPhone Settings / Notifications the user selects to display pushes as List and turns off Notification Grouping, then each notification resulting from the push appears on its own separately. Is there something other than thread-id/threadidentifier that is used to programmatically group them? If not then whats the point of these as grouping and display is actually under the control of user.
Replies
1
Boosts
0
Views
117
Activity
Mar ’25
Reply to MTLRenderCommandEncoder in ARView postProcess
During Metal lab with Apple, Metal engineer told me that it is ok
Topic: Graphics & Games SubTopic: General Tags:
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Activity
Jun ’23
Xcode Expands All Groups
Hi!(In advance I'm using Xcode 9.2 (9C40b))Xcode is great but one thing that grids my gears, is that whenever I add something(New file, Group, etc) to the file tree all groups gets expanded😢 This gets really annoying beacause of having multiple groups and having to minimize everything over and over again.I can't be the only one with this issue, or am I doing something wrong?If this is just a bug in Xcode, is there a future update coming to fix this?Regards/Guthner
Replies
0
Boosts
0
Views
290
Activity
Feb ’18
AU Lab midi mapping (host automation?) broken?
Or did it ever work? I just started trying to get a small setup with a single AU happening. I can play notes and assign midi CC #s to parameters in a plugin, but Command-clicking to open the midi mappings window does only that – I move a midi control as it directs but nothing happens. Notes no longer play and the application is not responding. Clicking cancel in the midi mapping window results in a beachball and I have to force-quit. I've had zero luck with multiple google searches on a variety of terms, so I'm posting here. TIA for any help! I have the latest AU Lab (2.3, created March 6, 2020) on a fresh install of Mojave (10.14.6). BTW - I am assuming, perhaps incorrectly, that midi mapping and host automation are the same thing. Maybe I need to be set straight there. I'm curious though – if Apple means this program to be a test bed for AUs that devs build, how could it not have some way to test host automation? This makes no sense to me.
Replies
0
Boosts
0
Views
458
Activity
Aug ’20
App Group File Ownership
Files can be written and read from the App Group by multipler apps. When an app is removed, its files are also removed.It looks like files in the App Group folder are owned by the app that created them. So, if app A adds a file to the App Group and then app A is removed, the file in the App Group is also removed. If App B reads that file, it better deal gracefully with it disappearing.What if a file in the App Group is created by app A and then modified by App B? Does ownship transfer to app B or remain with app A? If app A is removed after app B modifies the file, will it be removed?
Replies
1
Boosts
0
Views
646
Activity
Jan ’17
Sign In With Apple and App Grouping?
Sign In With Apple has a group apps category: https://help.apple.com/developer-account/?lang=en#/dev04f3e1cfcHowever, thats the only information I could find for sign in with apple and group apps.What is the significants of group apps with sign in with apple? What does it do? How does one use it?Does it support the following use-case?: I have a primary app and a child app. If I sign in with apple with the primary app, and then i want to use the secondary app, do i have to sign in again? Or am I already signed in because I have signed in with the primary app? Or can I architect it in such a way that allows me to sign in to one of the grouped apps, and then stay signed in when using another grouped app?
Replies
2
Boosts
0
Views
5k
Activity
Oct ’19
Multiple Subscription Group Approvals
My app creates new subscription groups via the app store connect api. Our end users subscribe to creators. Each creator has their own subscription group within app store connect. We will create hundreds, even thousands of subscription groups via the api over time. Does Apple have to approve each subscription group before they can be accessed via the app by end users? Or do they just approve the first one and allow us to create new subscriptions groups in real time -- over time via the API without additional approvals?
Replies
0
Boosts
0
Views
474
Activity
Feb ’23