WatchOS3 Complication that launches App

Question

I would like to create a complication for watchOS 3 that will simply launch my App. I have used XCode to create the ComplicationController:

class ComplicationController: NSObject, CLKComplicationDataSource
{

    // MARK: - Timeline Configuration

    func getSupportedTimeTravelDirections(for complication: CLKComplication, withHandler handler: @escaping (CLKComplicationTimeTravelDirections) -> Void) {
        handler([.forward, .backward])
    }

    func getTimelineStartDate(for complication: CLKComplication, withHandler handler: @escaping (Date?) -> Void) {
        handler(nil)
    }

    func getTimelineEndDate(for complication: CLKComplication, withHandler handler: @escaping (Date?) -> Void) {
        handler(nil)
    }

    func getPrivacyBehavior(for complication: CLKComplication, withHandler handler: @escaping (CLKComplicationPrivacyBehavior) -> Void) {
        handler(.showOnLockScreen)
    }

    // MARK: - Timeline Population

    func getCurrentTimelineEntry(for complication: CLKComplication, withHandler handler: @escaping (CLKComplicationTimelineEntry?) -> Void) {
        // Call the handler with the current timeline entry
        handler(nil)
    }

    func getTimelineEntries(for complication: CLKComplication, before date: Date, limit: Int, withHandler handler: @escaping ([CLKComplicationTimelineEntry]?) -> Void) {
        // Call the handler with the timeline entries prior to the given date
        handler(nil)
    }

    func getTimelineEntries(for complication: CLKComplication, after date: Date, limit: Int, withHandler handler: @escaping ([CLKComplicationTimelineEntry]?) -> Void) {
        // Call the handler with the timeline entries after to the given date
        handler(nil)
    }

    // MARK: - Placeholder Templates

    func getLocalizableSampleTemplate(for complication: CLKComplication, withHandler handler: @escaping (CLKComplicationTemplate?) -> Void) {
        // This method will be called once per supported complication, and the results will be cached
        handler(nil)
    }

}

and added images for the Circular, Modular and Utilitarian assets. But when I run the Watch App I cannot select my complications for a Watch face. What do I still need to do?

Thanks

Greg

Answer 1

These code changes are required:

func getSupportedTimeTravelDirections(for complication: CLKComplication, withHandler handler: @escaping (CLKComplicationTimeTravelDirections) -> Void)
{
    handler([])
}


func getCurrentTimelineEntry(for complication: CLKComplication, withHandler handler: @escaping (CLKComplicationTimelineEntry?) -> Void)
{
    if complication.family == .circularSmall
    {

        let template = CLKComplicationTemplateCircularSmallRingImage()
        template.imageProvider = CLKImageProvider(onePieceImage: UIImage(named: "Circular")!)
        let timelineEntry = CLKComplicationTimelineEntry(date: Date(), complicationTemplate: template)
        handler(timelineEntry)

    } else if complication.family == .utilitarianSmall
    {

        let template = CLKComplicationTemplateUtilitarianSmallRingImage()
        template.imageProvider = CLKImageProvider(onePieceImage: UIImage(named: "Utilitarian")!)
        let timelineEntry = CLKComplicationTimelineEntry(date: Date(), complicationTemplate: template)
        handler(timelineEntry)

    } else if complication.family == .modularSmall
    {

        let template = CLKComplicationTemplateModularSmallRingImage()
        template.imageProvider = CLKImageProvider(onePieceImage: UIImage(named: "Modular")!)
        let timelineEntry = CLKComplicationTimelineEntry(date: Date(), complicationTemplate: template)
        handler(timelineEntry)

    } else {

        handler(nil)

    }

}


func getLocalizableSampleTemplate(for complication: CLKComplication, withHandler handler: @escaping (CLKComplicationTemplate?) -> Void)
{        
    switch complication.family
    {
        case .circularSmall:
            let image: UIImage = UIImage(named: "Circular")!
            let template = CLKComplicationTemplateCircularSmallSimpleImage()
            template.imageProvider = CLKImageProvider(onePieceImage: image)
            handler(template)
        case .utilitarianSmall:
            let image: UIImage = UIImage(named: "Utilitarian")!
            let template = CLKComplicationTemplateUtilitarianSmallSquare()
            template.imageProvider = CLKImageProvider(onePieceImage: image)
            handler(template)
        case .modularSmall:
            let image: UIImage = UIImage(named: "Modular")!
            let template = CLKComplicationTemplateModularSmallSimpleImage()
            template.imageProvider = CLKImageProvider(onePieceImage: image)
            handler(template)
        default:
            handler(nil)
    }
}

Plus you need to provide the images as assets in the extension.