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“A Summary of the WWDC25 Group Lab”

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Reply to NavigationStack $path cleared on dealloc?
I went to a WWDC25 SwiftUI Lab regarding this issue. The suggested known workaround was to wrap the 2nd property change in a DispatchQueue.main.async call so that it happens on the next turn of the run loop. You can see my change here: https://github.com/bolsinga/site/pull/1024
Topic: UI Frameworks SubTopic: SwiftUI
Jul ’25
Reply to PHAssetChangeRequest revertAssetContentToOriginal without original asset content
Our engineering teams need to investigate this issue, as resolution may involve changes to Apple's software. Please file a bug report, include a small Xcode project and some directions that can be used to reproduce the problem, and post the Feedback number here once you do. If you post the Feedback number here I'll check the status next time I do a sweep of forums posts where I've suggested bug reports. Also, worth mentioning, if you're attending WWDC25 there is a Camera & Photos frameworks group lab today at 6PM PST where you can ask questions about PhotoKit. Bug Reporting: How and Why? has tips on creating your bug report.
Topic: Media Technologies SubTopic: Photos & Camera Tags:
Jun ’25
WWDC25 combining metal and ML
WWDC25: Combine Metal 4 machine learning and graphics Demonstrated a way to combine neural network in the graphics pipeline directly through the shaders, using an example of Texture Compression. However there is no mention of using which ML technique texture is compressed. Can anyone point me to some well known model/s for this particular use case shown in WWDC25.
Topic: Machine Learning & AI SubTopic: General Tags:
2
0
497
Jul ’25
iOS26 WWDC25 large inline navigation?
How to achieve the same navigation bar style as in the Design foundations from idea to interface - WWDC25 video? Screenshot: https://imgur.com/a/huzsm1H There's no new navigationBarTitleDisplayMode that has action buttons aligned with the title.
Topic: UI Frameworks SubTopic: SwiftUI Tags:
1
0
187
Jun ’25
Sample code for WWDC25 Session
Hi! I watched the WWDC25 session Bring your SceneKit project to RealityKit which seemed like a great resource for those of us transitioning from the now-deprecated SceneKit framework. The session mentioned that the full sample code for the project would be available to download, but I haven't been able to find it in the Code section of the video page or in the Sample Code Library. Has the sample code been released yet? Having the project code would make it much easier to follow along with the RealityKit changes shown in the video. Thanks again for the great session.
Topic: Graphics & Games SubTopic: RealityKit Tags:
4
0
332
Jun ’25
modifying labs
I teach Swift coding to high school students. I would like to be able to assign the various labs in the Fundamentals curriculum where I reduce the opportunities for cheating. Students will share images of the coding answers with each other or they can go on the internet to see the answers. I would like individualize the labs for each student. For example: When they have an assignment where the directions require a longitude property to be set to 50.001. Then changed to another number. I would like to automatically generate slightly different numbers in the lab (a different number for each student) and then save this new lab in the intended student's name. Is that possible? Is it easy to do? Harold Peaden
Topic: Developer Tools & Services SubTopic: General Tags:
0
0
469
Nov ’23
Reply to Proper Provisiong Profile for Finder Sync Extension
Thank you for your support. These are the results of my experiments: I configured the Product > Analyze action to build in Release, and the resulting app works as expected: the Extension is recognised and loaded, in a fully functional way. I followed the steps to Archive & Export the app, using several signing methods. Namely: a) (From the organizer) Distribute app > Custom > Direct Distribution > Export > Developement Team = HIVE DIGITAL LABS > Automatically manage signing. Then the summary shows: Team: HIVE DIGITAL LABS SRL Certificate: Developer ID Application (Expires 01/02/27) Profile: None b) Distribute app > Custom > Direct Distribution > Export > Development Team = HIVE DIGITAL LABS > Manually manage signing, then I use my team's Developer ID certificate, proper Eligible profiles, and the summary shows: Team: HIVE DIGITAL LABS SRL Certificate: Developer ID Application (Expires 01/02/27) Profile: Release Cut and
Topic: Code Signing SubTopic: Certificates, Identifiers & Profiles Tags:
Apr ’25
SceneKit Labs?
Are there any hands-on or directed labs for SceneKit anytime in the near future? Are there any recent SceneKit guides from Apple? There aren't many current resources online so I'm pretty much stuck just reading documentation and experimenting on my own (which feels inefficient).
Topic: Graphics & Games SubTopic: SceneKit Tags:
0
0
681
Sep ’21
WWDC Lab feedback
I am writing to follow up with my lab in WWDC24. I had 1:1 lab with Mr. Kavin, we had good 30 minutes lab and for follow up questions Kavin asked me to post it using feedback. Following is my questin: We have screenshare in our application and trying to use CFMessagePort for passing CVPixelBufferRef from broadcast extension to Applicaiton. Questions: How to copy planes of IOSurface backed CVPixelBufferRef onto another one without using memcpy, is there a zero-copy method? How to get notified when an IOSurface backed CVPixelBufferRef data get changed by another process. How to send an IOSurface backed CVPixelBufferRef from Broadcast Extension to application. How to pass unowned IOSurfaceRef from the Broadcast Extension to appliction.
Topic: Media Technologies SubTopic: Video Tags:
0
0
530
Jun ’24
Reply to Link, SwiftUI bug?, button trait identified on VoiceOver for a link.
I got feedback in a WWDC25 accessibility lab that a link was being read by VoiceOver as both a link and a button. I was surprised to discover that this seems to be the the default behavior. I'm also wondering if this is intentional or a bug.
Topic: UI Frameworks SubTopic: SwiftUI Tags:
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Activity
Jun ’25
Reply to Pinning Widgets in VisionOS Simulator
It is not possible to surface pin in the simulator. I confirmed this with Apple engineers in a WidgetKit Lab during WWDC25. However, as far as I can tell, that doesn’t actually make any functional difference to the widget itself, you just can’t see it in that frame
Topic: Spatial Computing SubTopic: General Tags:
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Activity
Jun ’25
Reply to NavigationStack $path cleared on dealloc?
I went to a WWDC25 SwiftUI Lab regarding this issue. The suggested known workaround was to wrap the 2nd property change in a DispatchQueue.main.async call so that it happens on the next turn of the run loop. You can see my change here: https://github.com/bolsinga/site/pull/1024
Topic: UI Frameworks SubTopic: SwiftUI
Replies
Boosts
Views
Activity
Jul ’25
Reply to PHAssetChangeRequest revertAssetContentToOriginal without original asset content
Our engineering teams need to investigate this issue, as resolution may involve changes to Apple's software. Please file a bug report, include a small Xcode project and some directions that can be used to reproduce the problem, and post the Feedback number here once you do. If you post the Feedback number here I'll check the status next time I do a sweep of forums posts where I've suggested bug reports. Also, worth mentioning, if you're attending WWDC25 there is a Camera & Photos frameworks group lab today at 6PM PST where you can ask questions about PhotoKit. Bug Reporting: How and Why? has tips on creating your bug report.
Topic: Media Technologies SubTopic: Photos & Camera Tags:
Replies
Boosts
Views
Activity
Jun ’25
WWDC25 combining metal and ML
WWDC25: Combine Metal 4 machine learning and graphics Demonstrated a way to combine neural network in the graphics pipeline directly through the shaders, using an example of Texture Compression. However there is no mention of using which ML technique texture is compressed. Can anyone point me to some well known model/s for this particular use case shown in WWDC25.
Topic: Machine Learning & AI SubTopic: General Tags:
Replies
2
Boosts
0
Views
497
Activity
Jul ’25
How to fetch Lab Name and Lab Result Panel from Health Kit
Hello Team, We are Testing Health Records feature into our Patient Application. We have imported sample data available in Simulator and modelling it using FHIR Model. We are trying to group test results based on Origin(Lab Name and Result Date) of Lab Reports. But we are not able to retrieve Lab Name and Lab Test Panel Mapping information.
Topic: App & System Services SubTopic: Health & Fitness Tags:
Replies
3
Boosts
0
Views
731
Activity
Sep ’21
Scenekit labs?
How can I ask questions about Scenekit? Looks like there are no labs? Should I apply for a Metal or realityKit lab and ask SceneKit questions?
Topic: Graphics & Games SubTopic: SceneKit Tags:
Replies
1
Boosts
0
Views
703
Activity
Jun ’20
iOS26 WWDC25 large inline navigation?
How to achieve the same navigation bar style as in the Design foundations from idea to interface - WWDC25 video? Screenshot: https://imgur.com/a/huzsm1H There's no new navigationBarTitleDisplayMode that has action buttons aligned with the title.
Topic: UI Frameworks SubTopic: SwiftUI Tags:
Replies
1
Boosts
0
Views
187
Activity
Jun ’25
Sample code for WWDC25 Session
Hi! I watched the WWDC25 session Bring your SceneKit project to RealityKit which seemed like a great resource for those of us transitioning from the now-deprecated SceneKit framework. The session mentioned that the full sample code for the project would be available to download, but I haven't been able to find it in the Code section of the video page or in the Sample Code Library. Has the sample code been released yet? Having the project code would make it much easier to follow along with the RealityKit changes shown in the video. Thanks again for the great session.
Topic: Graphics & Games SubTopic: RealityKit Tags:
Replies
4
Boosts
0
Views
332
Activity
Jun ’25
modifying labs
I teach Swift coding to high school students. I would like to be able to assign the various labs in the Fundamentals curriculum where I reduce the opportunities for cheating. Students will share images of the coding answers with each other or they can go on the internet to see the answers. I would like individualize the labs for each student. For example: When they have an assignment where the directions require a longitude property to be set to 50.001. Then changed to another number. I would like to automatically generate slightly different numbers in the lab (a different number for each student) and then save this new lab in the intended student's name. Is that possible? Is it easy to do? Harold Peaden
Topic: Developer Tools & Services SubTopic: General Tags:
Replies
0
Boosts
0
Views
469
Activity
Nov ’23
Labs and playgrounds
I am trying to view a lab from the Explorations Book (Structures) and I am getting the playground. Can anyone help me here?
Topic: Developer Tools & Services SubTopic: Swift Playground Tags:
Replies
1
Boosts
0
Views
1k
Activity
Dec ’22
Reply to Proper Provisiong Profile for Finder Sync Extension
Thank you for your support. These are the results of my experiments: I configured the Product > Analyze action to build in Release, and the resulting app works as expected: the Extension is recognised and loaded, in a fully functional way. I followed the steps to Archive & Export the app, using several signing methods. Namely: a) (From the organizer) Distribute app > Custom > Direct Distribution > Export > Developement Team = HIVE DIGITAL LABS > Automatically manage signing. Then the summary shows: Team: HIVE DIGITAL LABS SRL Certificate: Developer ID Application (Expires 01/02/27) Profile: None b) Distribute app > Custom > Direct Distribution > Export > Development Team = HIVE DIGITAL LABS > Manually manage signing, then I use my team's Developer ID certificate, proper Eligible profiles, and the summary shows: Team: HIVE DIGITAL LABS SRL Certificate: Developer ID Application (Expires 01/02/27) Profile: Release Cut and
Topic: Code Signing SubTopic: Certificates, Identifiers & Profiles Tags:
Replies
Boosts
Views
Activity
Apr ’25
VisionOS Developer Labs
Any other VisionOS Devs been denied to go to a Vision Pro Developer Lab event?
Topic: App & System Services SubTopic: Core OS Tags:
Replies
0
Boosts
0
Views
319
Activity
Mar ’24
SceneKit Labs?
Are there any hands-on or directed labs for SceneKit anytime in the near future? Are there any recent SceneKit guides from Apple? There aren't many current resources online so I'm pretty much stuck just reading documentation and experimenting on my own (which feels inefficient).
Topic: Graphics & Games SubTopic: SceneKit Tags:
Replies
0
Boosts
0
Views
681
Activity
Sep ’21
WWDC Lab feedback
I am writing to follow up with my lab in WWDC24. I had 1:1 lab with Mr. Kavin, we had good 30 minutes lab and for follow up questions Kavin asked me to post it using feedback. Following is my questin: We have screenshare in our application and trying to use CFMessagePort for passing CVPixelBufferRef from broadcast extension to Applicaiton. Questions: How to copy planes of IOSurface backed CVPixelBufferRef onto another one without using memcpy, is there a zero-copy method? How to get notified when an IOSurface backed CVPixelBufferRef data get changed by another process. How to send an IOSurface backed CVPixelBufferRef from Broadcast Extension to application. How to pass unowned IOSurfaceRef from the Broadcast Extension to appliction.
Topic: Media Technologies SubTopic: Video Tags:
Replies
0
Boosts
0
Views
530
Activity
Jun ’24