01
Create and update:
Focuses on SwiftUI.
SwiftUI & UI Frameworks / 15:16
Live Activities essentials
SwiftUI & UI FrameworksApp Servicesiosipados
Key Points
- Covers an app experience with Live Activities.
- Covers many of the places where Live Activities appear, including a new style in the Dynamic Island that delivers more information when iPhone is used in.
- Explains how to tailor the Live Activity for each space, structure the content and data, and drive real time updates from start to finish using ActivityKit.
- The session moves through Create and update, Optimize.
- Key concepts include Live Activities, Dynamic Island, ActivityKit, CarPlay, SwiftUI, WidgetKit, ActivityAttributes, ActivityView.
- Platform coverage: ios, ipados.
Condensed Flow
02
Optimize:
Focuses on SwiftUI, Live Activities, ActivityKit, WidgetKit.
More Detail
Additional details
- ActivityKit models separate static data in `ActivityAttributes` from changing data in `ContentState`; only the dynamic state is updated during the Live Activity lifetime.
- The coffee-order example uses phases such as placed, preparing, ready for pickup, and feedback to decide what belongs in the Live Activity state.
- Live Activities need presentations for several surfaces, including the Lock Screen, Dynamic Island, StandBy, Apple Watch Smart Stack, macOS menu bar, and CarPlay Dashboard.
- Updates can come from the running app or from push notifications, so the data model should be small, efficient, and focused on what changes over time.
- Interaction examples use App Intents such as `RateDrinkIntent` and `LiveActivityIntent` to support lightweight actions without opening the app.