iOS CapabilitiesLesson 61Free preview

Widgets & Extensions

This lesson is part of Swift · All levels

Summary

This lesson reviews the creation of Widgets on iOS using the WidgetKit and SwiftUI frameworks. The widget displays relevant concise information directly on the Home Screen, Lock Screen, and StandBy modes without the need to open the main application. Developers will learn the concept of TimelineProvider that governs the timing of widget content updates.

Key points

WidgetKit allows the creation of main screen widgets using SwiftUI
Widgets are built as a separate App Extension target within the Xcode project
TimelineProvider generates a timeline entry sequence for scheduled updates
Supports a wide variety of widget family sizes: systemSmall, systemMedium, systemLarge, and accessory

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