WKInterfaceButton

WKInterfaceButton is a user interface element in the WatchKit framework used to present a tappable control in a watchOS app. It is designed to be placed in a watch interface and can display either text, an image, or a combination, allowing the user to initiate an action with a tap.

Content and style are typically configured in Interface Builder or programmatically via the WKInterfaceButton API. The button's visible label or image can be changed at runtime to reflect state or context.

Interaction with a WKInterfaceButton is handled by connecting the button to an action in the containing WKInterfaceController. When the user taps the button, the associated action method is invoked, enabling the app to perform tasks, update the interface, or navigate to another screen.

Layout and usage: Buttons are used within groups, stacks, and other interface containers to create navigable interfaces on the small watch screen. The design emphasizes minimal text and clear affordances, suitable for glanceable interaction.

Platform notes: WKInterfaceButton is part of the storyboard-based WatchKit interface framework. In newer watchOS development, SwiftUI provides a Button primitive, but WKInterfaceButton remains relevant for legacy WatchKit interfaces and apps that rely on the older interface paradigm.