watchOS: Complications

Feb 7 2023 · Swift 5.6, watchOS 8.5, Xcode 13

Part 2: Tinted & Custom Complications

12. Refactor SwiftUI Views

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Previous episode: 11. Build a SwiftUI View for a Complication Next episode: 13. Display a SwiftUI View in a Complication

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00:02Right now, the code for our event view has multiple issues. Not only are you unable to preview the complication, but everything is tied to EventKit.

00:19We’ll want both SwiftUI and EventKit for this type, and we’ll make it struct called “Event”

import EventKit
import SwiftUI

struct Event {

}

struct Event {
  let color: Color
  let startDate: Date
  let endDate: Date
  let title: String
  let location: String?

  init(ekEvent: EKEvent) {
    color = Color(ekEvent.calendar.cgColor)
    startDate = ekEvent.startDate
    endDate = ekEvent.endDate
    title = ekEvent.title
    location = ekEvent.location
  }

extension Event {
// Move init(ekevent:) here
}

01:52OK, let’s take another look at EventView.swift

let event: Event

static var event = Event(
  color: .blue,
  startDate: .now,
  endDate: .now.addingTimeInterval(3600),
  title: "Gnomes rule!",
  location: "Everywhere"
)

EventView(event: event)

import ClockKit

  CLKComplicationTemplateGraphicRectangularFullView(
    EventView(event: event)
  )
    .previewContext()

let event: Event?

} else if let event = event {
  EventView(event: event)

EventComplicationView(event: nil)

EventComplicationView(event: nil)