WWDC Quick Look đź’“ By SwiftGGTeam
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WWDC22 Day 3 recap

WWDC22 Day 3 recap

WWDC 2022RecapShortcutsSwiftUICamera
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Highlight

Day 3 focuses on the release of App Shortcuts design, desktop iPad application development, new iOS camera capture features, and new capabilities of SwiftUI layout and view.

Core Content

App Shortcuts Design

Day 3 kicked off with a design guide for App Shortcuts. iOS 16 changes the way shortcuts are used by allowing users to call app functions through Siri without pre-configuring shortcuts. (00:09)

Developers need to consider what natural languages ​​users may use to trigger app functions and design parameters and intentions for these scenarios. A good App Shortcuts experience should make users feel like “Siri understands what I’m talking about.”

Desktop iPad apps

iPadOS 16 brings true multi-window support, allowing apps to express the layout that best suits their content while putting more features at the forefront of the UI. This means that the design paradigm of iPad App has shifted from “large-screen iPhone” to “desktop-level experience.” (00:17)

Key changes include:

  • Resizable windows, supports multiple windows in parallel
  • Dense UI layout, suitable for large screens
  • Keyboard shortcuts and menu bar support
  • Document browser improvements

iOS camera capture new features

Camera Capture Session showcases iOS 16’s new photo capabilities. This includes better low-light performance, new exposure controls, and a Spotlight effect that lets you focus light on objects in the scene by clicking on different areas of the frame. (00:27)

These new features have a direct impact on photography apps, e-commerce shooting apps, and AR applications.

SwiftUI Layout and View

SwiftUI continues to expand its building blocks. New layout tools and view components allow developers to compose more complex interfaces while maintaining declarative simplicity. (00:36)

Detailed Content

Day 3 Technical Topic Classification

Automation and Integration:

  • App Shortcuts: Siri integration that requires no user pre-configuration
  • App Intents: Define the actions that the App can perform

iPad experience upgrade:

  • Multi-window management: UIScene and WindowGroup
  • Desktop-level layout: denser controls and richer toolbars
  • Improved keyboard and pointer support

Multimedia & Camera:

  • New API for camera capture
  • Photo picker improvements
  • Enhanced video editing capabilities

SwiftUI Deepening:

  • New layout container
  • View state management improvements
  • Animation system enhancements

Desktop iPad App design changes

Making iPad Apps “desktop-grade” means several specific changes:

  1. Window Management: Supports opening multiple document windows at the same time, and each window runs independently
  2. Toolbar Density: A larger screen can accommodate more tool buttons without the need to hide them all in the menu
  3. Keyboard Priority: Provide keyboard shortcuts and pointer hover effects for common operations
  4. Sidebar Navigation: UseNavigationSplitViewReplace bottom tab bar

These changes bring iPad apps closer to the experience of Mac apps, but maintain touch-first interactions.

Core Takeaways

  • Voice-first app interaction: Leverage App Shortcuts to let users control apps with natural language. For example, an accounting app can say “Siri, write down 35 yuan for lunch”, and a fitness app can say “Start a 30-minute run.” The entry API isAppIntentandAppShortcutsProvider。

  • iPad Professional Tools App: Transform existing iPhone tool apps into desktop-level iPad apps. For example, code editors, design tools, and project management tools use multiple windows and keyboard shortcuts to improve efficiency. The entry API isWindowGroupandNavigationSplitView。

  • Camera Enhanced Shooting App: Use the new camera features of iOS 16 to become a professional shooting tool. The Spotlight effect can be used for product photography, and new exposure controls are suitable for night scenes. The entry API isAVCaptureDevicenew properties andAVCapturePhotoOutput。

  • Multi-document workflow app: Enable Mac-like parallel editing of multiple documents on iPad. For example, text editors can open multiple files at the same time, and image browsers can compare them side by side. The entry API isNSDocumentandUIDocumentWith multi-Scene support.

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