Fatbobman's Swift Weekly #088
WWDC 2025 Developer Special Edition
WWDC 2025 Developer Special Edition
WWDC 2025 introduced a host of eye-catching new features and APIs. In this special issue, we’ve handpicked high-value analysis articles, practical tools, and key takeaways from the developer community to help you quickly master the essentials of these new capabilities. Content will continue to be updated through the end of the week.
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Featured Resources
Leveraging large-language models, you can search past WWDC content (including WWDC 25) in natural language. For example, asking “Can the App Intents code now live in an SPM package?” not only returns a clear answer but also provides the corresponding session video for reference.
Community-maintained, detailed write-ups of WWDC sessions (including WWDC 25). Contributions from more developers are welcome—see the contribution guide.
Apple Developer YouTube Channel
If WWDC session videos in the Developer app stutter or lag, you can watch them directly on Apple’s official YouTube channel.
WWDC 2025 First Impressions: As Expected, Yet Unexpected by Fatbobman
WWDC 2025 arrived right on schedule. Apple released all session videos at once, allowing developers to dive into the new features and APIs they care about without delay. After skimming through them over the past two days, my initial takeaway for this year’s conference is: as expected, yet unexpected.
Updates to Apple’s On-Device and Server Foundation Language Models
Apple’s official deep dive into the Foundation Models framework. It thoroughly showcases the core models, optimization strategies, and paths for developer support behind Apple Intelligence—highlighting not just improvements in inference efficiency and model capability, but also systematic designs for privacy, controllable outputs, and multilingual support.
All New Frameworks Presented at WWDC 25 by Marco Eidinger
A comprehensive roundup of the new frameworks unveiled at WWDC 2025. You can also browse all official Apple frameworks here.
Opting Your App Out of the Liquid Glass Redesign with Xcode 26 by Donny Wals
Not ready to adapt to Liquid Glass? Apple gives developers a one-year grace period, allowing apps to continue using the traditional UI style on iOS 26 by disabling Liquid Glass.
Setting Default Actor Isolation in Xcode 26 by Donny Wals
Xcode 26 introduces many new Swift 6.2 concurrency features. Misconfiguration can lead to compilation failures—this guide shows how to set the default actor isolation correctly.
Apple Intelligence APIs by Alex
A two-part series that presents every aspect of the Foundation Models on offer. See both parts here.
What’s New with SwiftUI 26 by Thomas Ricouard and What Is New in SwiftUI after WWDC 25 by Majid Jabrayilov
Quick overviews of SwiftUI’s new features compiled by Thomas Ricouard and Majid Jabrayilov.
iOS 26: Notable UIKit Additions by Jordan Morgan
Key new capabilities brought to UIKit in WWDC 2025.
How to Observe Model Changes in iOS 26 by Khoa
UIKit views gain the same automatic Observable response as SwiftUI—this article walks through how to use it.
WebView Is Finally Coming to SwiftUI by Daniel Saidi
A guide to using the new native WebView in SwiftUI.
Create Immersive Backgrounds in SwiftUI with backgroundExensionEffect by Natalia Panferova
The backgroundExtensionEffect visual enhancement tool in SwiftUI—extend and blur images or background content beyond view boundaries for a more immersive, system-consistent design.
Discussion on Flutter’s Support for Liquid Glass
The Flutter team prefers modular, community-driven design styles rather than chasing every native UI update. To achieve Liquid Glass effects in Flutter, you’ll need third-party packages or custom components for now.
Virtualizing macOS 26 Tahoe by Howard Oakley
A complete guide to safely running the macOS 26 Beta (Tahoe) in a VM on Apple Silicon Macs.
A Brief Exploration of Liquid Glass’s Under-the-Hood Implementation by Cyandev
Liquid Glass is powered by Apple’s private layering system—combining CABackdropLayer and CASDFLayer with a special glassBackground filter and dynamically generated SDF textures. Wrapped in _UIMultiLayer, it’s fully managed by UIKit animation logic.
How to Fix Projects That Won’t Open in Xcode 26 by Cihat Gündüz
Right-click the .xcodeproj, choose “Show Package Contents,” then do the same for project.xcworkspace and delete the xcuserdata folder (which contains incompatible .xcuserstate files).
A tool for enabling Apple Intelligence features on macOS 26 in regions where access hasn’t yet been opened.
macOS Tahoe Brings a New Disk Image Format by Howard Oakley
macOS 26 Tahoe introduces the new ASIF disk image format based on APFS sparse files, capable of delivering near-native read and write speeds in virtual machines and compatible with Sequoia 15.5 and later.
Sketching, Composing, and… Failing? My App Icon Experience with Apple’s New Tool Icon Composer by implyKyra
Experience using Icon Composer: designing app icons is easier than ever, but there are still some limitations.
Automatic Observation Tracking in UIKit and AppKit: The Feature Apple Forgot to Mention by Peter Steinberger
In iOS 18 and macOS 15, simply toggling a key in your Info.plist lets UIKit and AppKit automatically track @Observable model property accesses and refresh views on change; iOS 26 and later also introduce the more efficient updateProperties() method and enable this feature by default.
labelIconToTitleSpacing by Enid
Starting in iOS 26, developers can adjust the spacing between the text and image in a Label("Hello", systemImage: "globe") using the labelIconToTitleSpacing modifier.
Cook up 3D charts with Swift Charts by Artem Novichkov
At WWDC25, Swift Charts introduced the Chart3D API, allowing developers to create interactive, customizable 3D charts in SwiftUI without relying on third-party libraries.
Crafting Liquid Glass app icons with Icon Composer by Flora Damiano
Guide to Crafting Liquid Glass Dynamic, Responsive App Icons for iOS, iPadOS, macOS, and watchOS Using Icon Composer
WWDC 2025 Group Lab Transcript by sam henri gold
Missed this year’s Group Lab? Don’t worry! Sam has compiled the live Q&A from his AI, SwiftUI, design, UI, and other sessions into one transcript, giving you a comprehensive look at the key questions developers care about.
WWDC 2025 开发者特辑
WWDC 2025 带来了众多令人瞩目的新功能和 API。作为特刊，本期周报精选了开发者社区颇具价值的解读文章、实用工具和关键注意事项，帮助大家快速掌握新特性的核心要点。内容将持续更新至本周末。
如果您发现这份周报或我的博客对您有所帮助，可以考虑通过 爱发电，Buy Me a Coffee 支持我的创作。
精选资源
借助大模型技术，你可以用自然语言搜索历届 WWDC 内容（包括 WWDC 25）。比如询问"App Intents 的代码现在可以放在 SPM 中吗？"，不仅会给出明确答复，还会附上相应的 Session 视频作为参考。
社区维护的 WWDC Session 详细记录（包含 WWDC 25）。欢迎更多开发者参与贡献。
当 Developer 应用中的 WWDC Session 视频播放卡顿时，可直接访问苹果在 YouTube 上的官方频道观看。
WWDC 2025 初印象：意料之中，预想之外 by Fatbobman
WWDC 2025 如期而至。苹果一次性发布了所有的 Session 视频，让开发者得以在第一时间了解自己感兴趣的新特性和新 API。经过两天的快速浏览，我对本届 WWDC 2025 的初步印象为：意料之中，预想之外。
Updates to Apple's On-Device and Server Foundation Language Models
苹果官方对 Foundation Models 框架的详细介绍。全面展示了 Apple Intelligence 背后的核心模型、优化策略与开发者支持路径。亮点不仅在于推理效率和模型能力的提升，更体现在隐私保护、可控输出和多语言支持的系统性设计上。
All New Frameworks Presented at WWDC25 by Marco Eidinger
WWDC 2025 推出的新框架完整汇总。你还可以在此处检索所有苹果官方框架信息。
Opting Your App Out of the Liquid Glass Redesign with Xcode 26 by Donny Wals
暂时没有精力适配 Liquid Glass？苹果为开发者提供了一年缓冲期，允许应用在 iOS 26 系统上继续使用传统 UI 风格（禁用 Liquid Glass）。
Setting Default Actor Isolation in Xcode 26 by Donny Wals
Xcode 26 支持了众多 Swift 6.2 新并发功能。如果配置不当，可能导致代码无法编译。
Apple Intelligence APIs by Alex
共两篇文章，全方位展示 Foundation Models 的各个方面。
What’s new with SwiftUI 26 by && What is New in SwiftUI after WWDC25
Thomas Ricouard 和 Majid Jabrayilov 整理的 SwiftUI 新功能速览。
iOS 26: Notable UIKit Additions by Jordan Morgan
WWDC 2025 为 UIKit 带来的重要新功能。
How to Observe Model Changes in iOS 26 by Khoa
iOS 26 中，UIKit 视图获得了与 SwiftUI 相同的 Observable 自动响应能力，本文详细介绍其使用方法。
WebView is Finally Coming to SwiftUI by Daniel Saidi
SwiftUI 原生 WebView 的使用指南。
Create Immersive Backgrounds in SwiftUI with backgroundExtensionEffect by Natalia Panferova
backgroundExtensionEffect 是 WWDC 2025 中 SwiftUI 的视觉增强工具，通过将图片或背景内容扩展并模糊至视图边界外，实现更具沉浸感和系统一致性的设计效果。
Flutter 团队避免陷入追逐每次原生设计更新的循环，更倾向于让设计风格模块化、社区化。如果希望在 Flutter 中实现 Liquid Glass 风格，短期内需依赖第三方包或自定义组件。
Virtualising macOS 26 Tahoe by Howard Oakley
在 Apple Silicon Mac 上安全运行 macOS 26 Beta（Tahoe）虚拟机的完整指南。
Liquid Glass 底层实现的简单探索 by Cyandev
Liquid Glass 效果主要由苹果内部的私有图层系统实现，核心是 CABackdropLayer 和 CASDFLayer 的组合。它通过一个特殊的 glassBackground 滤镜和动态生成的 SDF 纹理，呈现出折射、融合等玻璃感效果。这些图层被 _UIMultiLayer 封装，开发者无法直接访问，所有动画和参数调节也都由 UIKit 内部完成。
修复项目无法在 Xcode 26 中打开的方法 by Cihat Gündüz
右键点击 .xcodeproj 文件，选择"显示包内容"。对 project.xcworkspace 执行相同操作，删除 xcuserdata 文件夹（包含不兼容的 .xcuserstate 文件）。
在尚未开放 Apple Intelligence 权限的地区，为 macOS 26 开启相关功能的工具。
macOS Tahoe Brings a New Disk Image Format by Howard Oakley
macOS 26 Tahoe 引入了基于 APFS 稀疏文件的全新 ASIF 磁盘映像格式，可在虚拟机中实现近原生的读写速度，并向 Sequoia 15.5 及以后版本兼容。
Sketching, Composing, and… Failing? My App Icon Experience with Apple’s New Tool Icon Composer by implyKyra
使用 Icon Composer 的体验：设计应用程序图标比以往更加轻松，但仍存在一些限制。
Automatic Observation Tracking in UIKit and AppKit: The Feature Apple Forgot to Mention by Peter Steinberger
在 iOS 18 和 macOS 15 中，只需在 Info.plist 中开一个开关，UIKit 和 AppKit 即可自动跟踪 @Observable 模型的属性访问并在视图更新时自动刷新；iOS 26 及以后版本还引入了更高效的 updateProperties() 方法，并默认开启该功能。
labelIconToTitleSpacing by Enid
从 IOS 26 开始，开发者可以通过 labelIconToTitleSpacing 调整 Label("Hello",systemImage: "globe") 文字和图片之间的间距了。
Cook up 3D charts with Swift Charts by Artem Novichkov
Swift Charts 在 WWDC25 中新增了 Chart3D API，让开发者无需依赖第三方库即可在 SwiftUI 中创建交互式、可定制的三维图表。
Crafting Liquid Glass app icons with Icon Composer by Flora Damiano
使用 Icon Composer 打造适配 iOS、iPadOS、macOS 与 watchOS 的 Liquid Glass 动态响应式图标指南。
WWDC 2025 Group Lab Transcript by sam henri gold
错过了今年的 Group Lab？别担心！Sam 已将他在 AI、SwiftUI、Design、UI 等专题场次的现场问答整理成文，带你一览开发者最关心的核心问题。