Structure

TimelineView.Context

Information passed to a timeline view’s content callback.

Declaration 宣言 

struct Context

Overview 概要

The context includes both the date from the schedule that triggered the callback, and a cadence that you can use to customize the appearance of your view. For example, you might choose to display the second hand of an analog clock only when the cadence is TimelineView.Context.Cadence.seconds or faster.

Topics 話題

Getting the Date

let date: Date
The date from the schedule that triggered the current view update.

Getting the Cadence

let cadence: TimelineView<Schedule, Content>.Context.Cadence
The rate at which the timeline updates the view.
enum Cadence
A rate at which timeline views can receive updates.

Invalidating the Context

func invalidateTimelineContent()
Resets any pre-rendered views the system has from the timeline.
Available when Schedule conforms to TimelineSchedule.

See Also 参照

Creating a Timeline

init(Schedule, content: (TimelineView<Schedule, Content>.Context) -> Content)
Creates a new timeline view that uses the given schedule.
Available when Schedule conforms to TimelineSchedule and Content conforms to View.