swift – 如何在watchOS复杂中显示图像

发布时间：2020-12-14 05:38:45 所属栏目：百科来源：网络整理

导读：我目前正在为watchOS 2应用程序设置复杂功能. 我想提供三种不同类型的并发症：功利小模块化小物品圆形小所有这些复杂类型应该只是将我的应用程序图标显示为图像.在我的ClockKit类中,我实现了以下方法： func getCurrentTimelineEntryForComplication(com

我目前正在为watchOS 2应用程序设置复杂功能.

我想提供三种不同类型的并发症：

>功利小
>模块化小物品
>圆形小

所有这些复杂类型应该只是将我的应用程序图标显示为图像.在我的ClockKit类中,我实现了以下方法：

func getCurrentTimelineEntryForComplication(complication: CLKComplication,withHandler handler: (CLKComplicationTimelineEntry?) -> Void) {

    if complication.family == .CircularSmall {

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

    } else if complication.family == .UtilitarianSmall{

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

    } else if complication.family == .ModularSmall {

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

    } else {

        handler(nil)

    }

}

我不确定这是实现我的想法的合适方式,所以我想知道将图像显示为我的复杂功能的代码.有谁知道我怎么能做到这一点？

起初我强烈建议你观看 Apple’s session关于并发症,除非你还没有看到它.

您至少需要在ComplicationController中实现3个以下非可选的CLKComplicationDataSource方法：

public func getSupportedTimeTravelDirectionsForComplication(complication: CLKComplication,withHandler handler: (CLKComplicationTimeTravelDirections) -> Void)
public func getCurrentTimelineEntryForComplication(complication: CLKComplication,withHandler handler: (CLKComplicationTimelineEntry?) -> Void)
public func getPlaceholderTemplateForComplication(complication: CLKComplication,withHandler handler: (CLKComplicationTemplate?) -> Void)

所有其他方法都是可选的.据你所知,你只实现了第二个.在您的上下文中,剩余两个的实现可能如下：

class ComplicationController: NSObject,CLKComplicationDataSource {

    func getSupportedTimeTravelDirectionsForComplication(complication: CLKComplication,withHandler handler: (CLKComplicationTimeTravelDirections) -> Void) { 
        // Turn off time travelling
        handler([CLKComplicationTimeTravelDirections.None])
    }

    func getPlaceholderTemplateForComplication(complication: CLKComplication,withHandler handler: (CLKComplicationTemplate?) -> Void) {
        var template: CLKComplicationTemplate?

        switch complication.family {
            case .CircularSmall:
                template = CLKComplicationTemplateCircularSmallRingImage()
                template.imageProvider = CLKImageProvider(onePieceImage: UIImage(named: "app_icon")!)
            case .UtilitarianSmall:
                template = CLKComplicationTemplateUtilitarianSmallRingImage()
                template.imageProvider = CLKImageProvider(onePieceImage: UIImage(named: "app_icon")!)
            case .ModularSmall:
                template = CLKComplicationTemplateModularSmallRingImage()
                template.imageProvider = CLKImageProvider(onePieceImage: UIImage(named: "app_icon")!)
            case .ModularLarge:
                template = nil
            case .UtilitarianLarge:
                template = nil
        }

        handler(template)
    }

}

不要忘记在Complication Configuration中将您的数据源类指定为$(PRODUCT_MODULE_NAME).ComplicationController并选中相应的复选框.

这是您案例中最小的复杂配置.

（编辑：李大同）

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