Touch - An Introduction to Interactive Widgets
summary
iOS 17 widgets become truly interactive by wiring SwiftUI buttons and toggles to app intent perform functions that run asynchronously and then force a timeline reload so the widget updates. Widgets run in a separate widget extension, have archived view snapshots for instant feedback, and impose a 30 megabyte memory limit. Examples shown: a train‑times widget with a working refresh button, Overcast play controls, and even small home‑screen games; intents are reusable in the main app and Shortcuts.
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