A Summary of the WWDC25 Group Lab

I’m talking about the App Sandbox that I have to enable under Signing & Capabilities for the Mac app I’m developing. I need to keep it enabled because I want to publish the app on the App Store, so simply disabling it isn’t an option. I recently attended a one-on-one lab, and the engineer mentioned that it’s not necessarily a problem if the file isn’t inside the sandbox (which surprised me a bit). We tried to create a temporary exception for the socket file, but I’m still seeing a deny(1) network-outbound... error. Unfortunately, we weren’t able to resolve the issue during the session, so he recommended that I post the question here in the forum. When you mention selecting the socket, do you mean creating a bookmark for it?

It's interesting huh! One option would be to simply delete the file and let CoreData pull the data from the cloud … you might want to consider just excluding the file from the backup entirely I think this is not an option because the user can turn off iCloud and NSPersistentCloudKitContainer still works to store data without syncing to iCloud. So not all users can get this data back from iCloud, it may only exist in their backup. What does your app actually do and, most importantly, what if any background modes/work does it use? You can think of it as a very simple todo app where you create a todo, it shows up in the widget, and tapping a button marks it complete (via the main app process). Note the widget's access to the database is read-only and cloudKitContainerOptions is not set so the widget extension process does not sync with iCloud (only the main app process does). The only background modes/work used in the app is the remote notifications capability that allows CloudKit to silently notify the app when

So, the first thing here is that the basic difference between the initial path-> step 1 was file:///private/var/mobile/Containers/Shared/AppGroup/FAF64427-9826-4C86-9C2E-D7E5285BA7EC/MyApp.sqlite ...and the post restore path-> step 5 and 7 was file:///private/var/mobile/Containers/Shared/AppGroup/FDE4F3AF-E775-4D5F-842D-1C5AA77BE26F/MyApp.sqlite ...is the standard behavior of the system, as the UUIDs are generated by the system whenever the app group is created. The real oddity here is this: and yet FileManager says the file exists, the file is readable and writable, and the contents at that path are non-nil The FileManager is low level enough that whatever it says is inherently true. So, some kind of file was absolutely there and was manipulatable by your app. More to the point, the file NOT being there wouldn't have been a bad thing, as CoreData would simply have created the file from scratch using the cloud. In terms of what's going on here, I suspect that the actual issue is a lower level s

Hello! Happy to answer a few of these, let me know if this helps! I think adjustable works well for carousels in some cases, and not others. It's kind of up to you as a developer to decide if this makes sense for your app. Personally, where I've found combining a carousel into one adjustable element to work well is in the following 2 cases. The first, is when you are implementing some sort of picker, that is a horizontal list. The focused item of the carousel in this case is often the selected item. An example of this would be the Animoji picker in Messages. The other is when the carousel is infinitely scrolling, or looping. In this case, grouping into one element is useful so that VO users don't get stuck swiping over the same elements in a loop without being able to get to the content underneath it. Grouping carousels tends to work less well when you have sub-elements in the items in the carousel. If you have a looping/infinite carousel that also has sub-elements, I think you'll just need

Hello @Ian_Chen thank you for your question! 

Much of what you want to do will require code. 

 In order to trigger any behavior in response to a tap gesture you must first setup an entity with a collision component, an input target component, and if you are triggering a timeline animation, a behaviors component configured to start the timeline animation when a tap is applied. Then, you call applyTapForBehaviors() when a tap occurs in order to propagate the tap event to your entity.

 You can disable and enable an entity in the timeline, and if this entity has a particle emitter component, the particles will also be disabled or enabled. There is not a way to control this precisely with only Reality Composer Pro, you will need to use the particle emitter component API to manage this. 

I recommend taking a look at the new sample Petite Asteroids released for WWDC25. The intro sequence contains a particle system that is controlled in code. Additionally, see Compose interactive 3D content in Reality Co

Keychain items stored using SecItem in your app will generally be migrated or synced to a new iPhone when a user transfers data from their old device, but the specifics depend on how the transfer is performed and the Keychain item attributes you’ve set. Here’s a concise explanation: iCloud Keychain Syncing: If iCloud Keychain is enabled on both devices, Keychain items with the kSecAttrSynchronizable attribute set to true are automatically synced to the new device via iCloud. This includes passwords, certificates, and other secure data stored in the Keychain. Items without this attribute (i.e., non-syncable items) are not synced via iCloud and require a different transfer method. Device-to-Device Transfer (Encrypted Backup or Direct Transfer): When using iCloud Backup or iTunes/Finder encrypted backup, Keychain items (both syncable and non-syncable) are included in the encrypted backup. Restoring this backup to a new iPhone will transfer all Keychain items. During a direct device-to-device transfer (e.g., usin

Hello dc48: Thank you for your posing your questions. I'll do my best to answer them here. Does anyone have a template of an Apple Projected Media Profile Format Description I'd encourage you to take a look at Learn about the Apple Projected Media Profile from WWDC25. This session includes links to reference material, as well as a sample project: Converting projected video to Apple Projected Media Profile. This particular sample project includes a stereoscopic 180 asset, but it should be possible to adapt it for Wide FoV content. or a File of a Stereo wideFOV video? An example Wide FoV HLS stream can be found at Streaming Examples. The Streams for Apple Vision Pro listed here are used in both of the following sample projects: Playing immersive media with AVKit Playing immersive media with RealityKit Use case I have 2 compatible cameras that I stereo sync and I want to move the projection information from the compatible video to the Spatial video that combines them. You may also find it helpful to ref

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

According to this document: https://developer.apple.com/documentation/usernotifications/implementing-communication-notifications Communication notifications provide a rich experience for direct communication. These notifications have a unique user experience, highlighting prominent avatars and group names. But when NSUserActiveTypes ->INSendMessage Intent is added to info. plist, the WatchOS startup app will display Outlook Handoff on Mac. However, there will be no Outlook Handoff after iOS startup. 按照此文档：https://developer.apple.com/documentation/usernotifications/implementing-communication-notifications 通讯通知为直接沟通提供了丰富的体验。这些通知具有独特的用户体验，突出了醒目的头像和群组名称。 但是当添加NSUserActivityTypes->INSendMessageIntent到info.plist后，WatchOS启动App就会在Mac 上出现Outlook接力。但是iOS启动后不会出现Outlook接力。