Principles of great widgets

15:46 - Xcode Previews for Widget Views with Color Scheme Overrides

struct MyWidgetEntryView : View {
    var date: Date

    var body: some View {
        ZStack {
            Rectangle().fill(BackgroundStyle())
            VStack {
                Text("Hello")
            }
        }
    }
}

struct MyWidget_Previews: PreviewProvider {
    static var previews: some View {
        MyWidgetEntryView(date: Date())
            .previewContext(WidgetPreviewContext(family: .systemSmall))
            .environment(\.colorScheme, .dark)
    }
}

16:34 - Widget Partial Privacy Redactions - Banking Example

struct MyWidgetEntryView : View {

    var body: some View {
        ZStack {
            Rectangle().fill(BackgroundStyle())
            VStack(alignment: .leading) {
                Text("Balance")
                    .font(.largeTitle)
                    .fontWeight(.bold)
                    .foregroundColor(Color.blue)
                Text("$128.45")
                    .privacySensitive()
                    .font(.title2)
                    .foregroundColor(Color.gray)
            }
        }
    }
}

23:08 - WidgetBundle Example

struct IndividualSymbolWidget : Widget {
    var body: some WidgetConfiguration {
    …
}
}

struct StocksOverviewWidget : Widget {
    var body: some WidgetConfiguration {
    …
    }
}

@main
struct MyWidgetBundle: WidgetBundle {
    var body: some Widget {
        // Order of these widgets defines the order in the Widget Gallery
        IndividualSymbolWidget()
        StocksOverviewWidget()
    }
}

25:43 - Static Widget Configuration Example

@main
public struct SampleWidget: Widget {
    public var body: some WidgetConfiguration {
        StaticConfiguration(kind: "com.sample.myStaticSampleWidgetKind",
                            provider: Provider()) { entry in
                                SampleWidgetEntryView(entry: entry)
                            }
        .configurationDisplayName("My Widget")
        .description("This is an example widget.")
    }
}

public struct Provider: TimelineProvider {
    public func timeline(with context: Context,
                         completion: @escaping (Timeline<Entry>) -> ()) {
        let entry = SimpleEntry(date: Date())
        // TODO: Generate a timeline entry
        completion(timeline)
    }
}

25:55 - Intent Widget Configuration Example

@main
public struct SampleWidget: Widget {
    public var body: some WidgetConfiguration {
        IntentConfiguration(kind: "com.sample.myIntentSampleWidgetKind",
                            intent: SampleConfigurationIntent.self
                            provider: Provider()) { entry in
                                SampleWidgetEntryView(entry: entry)
                            }
        .configurationDisplayName("My Widget")
        .description("This is an example widget.")
    }
}

public struct Provider: IntentTimelineProvider {
    public func timeline(for configuration: SampleConfigurationIntent, with context: Context,
                         completion: @escaping (Timeline<Entry>) -> ()) {
        let entry = SimpleEntry(date: Date(), configuration: configuration)
        // generate a timeline
        completion(timeline)
    }
}