Watch Complication 导致 dyld 崩溃：找不到符号：_OBJC_CLASS_$_CLKFullColorImageProvider答案

【问题标题】：Watch Complication causes crash with dyld: Symbol not found: _OBJC_CLASS_$_CLKFullColorImageProviderWatch Complication 导致 dyld 崩溃：找不到符号：_OBJC_CLASS_$_CLKFullColorImageProvider
【发布时间】：2018-10-26 17:15:09
【问题描述】：

我在 watchOS 4 中收到此错误 dyld: Symbol not found: _OBJC_CLASS_$_CLKFullColorImageProvider，但在 watchOS 5 中没有，我相信它与下面的复杂代码有关，但无法弄清楚为什么……据我所知编译器应该不要寻找CLKFullColorImageProvider，因为我已经用if #available(watchOSApplicationExtension 5.0, *) 阻止了它

class Complication: NSObject, CLKComplicationDataSource {
    func getCurrentTimelineEntry(for complication: CLKComplication, withHandler handler: @escaping (CLKComplicationTimelineEntry?) -> Void) {
        if #available(watchOSApplicationExtension 5.0, *) {
            if complication.family == .circularSmall {

                let template = CLKComplicationTemplateCircularSmallRingImage()
                guard let image = UIImage(named: "Circular") else { handler(nil); return}
                template.imageProvider = CLKImageProvider(onePieceImage: image)
                let timelineEntry = CLKComplicationTimelineEntry(date: Date(), complicationTemplate: template)
                handler(timelineEntry)

            } else if complication.family == .utilitarianSmall {

                let template = CLKComplicationTemplateUtilitarianSmallRingImage()
                guard let image = UIImage(named: "Utilitarian") else { handler(nil); return}
                template.imageProvider = CLKImageProvider(onePieceImage: image)
                let timelineEntry = CLKComplicationTimelineEntry(date: Date(), complicationTemplate: template)
                handler(timelineEntry)

            } else if complication.family == .modularSmall {

                let template = CLKComplicationTemplateModularSmallRingImage()
                guard let image = UIImage(named: "Modular") else { handler(nil); return}
                template.imageProvider = CLKImageProvider(onePieceImage: image)
                let timelineEntry = CLKComplicationTimelineEntry(date: Date(), complicationTemplate: template)
                handler(timelineEntry)

            } else if complication.family == .graphicCircular {
                let template = CLKComplicationTemplateGraphicCircularImage()
                guard let image = UIImage(named: "GraphicCircular") else { handler(nil); return}
                template.imageProvider = CLKFullColorImageProvider(fullColorImage: image)
                let timelineEntry = CLKComplicationTimelineEntry(date: Date(), complicationTemplate: template)
                handler(timelineEntry)

            } else if complication.family == .graphicBezel {
                let template = CLKComplicationTemplateModularSmallRingImage()
                guard let image = UIImage(named: "GraphicBezel") else { handler(nil); return}
                template.imageProvider = CLKImageProvider(onePieceImage: image)
                let timelineEntry = CLKComplicationTimelineEntry(date: Date(), complicationTemplate: template)
                handler(timelineEntry)

            } else if complication.family == .graphicCorner {
                let template = CLKComplicationTemplateGraphicCornerCircularImage()
                guard let image = UIImage(named: "GraphicCorner") else { handler(nil); return}
                template.imageProvider = CLKFullColorImageProvider(fullColorImage: image)
                let timelineEntry = CLKComplicationTimelineEntry(date: Date(), complicationTemplate: template)
                handler(timelineEntry)

            } else {

                handler(nil)

            }
        } else {

            if complication.family == .circularSmall {

                let template = CLKComplicationTemplateCircularSmallRingImage()
                guard let image = UIImage(named: "Circular") else { handler(nil); return}
                template.imageProvider = CLKImageProvider(onePieceImage: image)
                let timelineEntry = CLKComplicationTimelineEntry(date: Date(), complicationTemplate: template)
                handler(timelineEntry)

            } else if complication.family == .utilitarianSmall {

                let template = CLKComplicationTemplateUtilitarianSmallRingImage()
                guard let image = UIImage(named: "Utilitarian") else { handler(nil); return}
                template.imageProvider = CLKImageProvider(onePieceImage: image)
                let timelineEntry = CLKComplicationTimelineEntry(date: Date(), complicationTemplate: template)
                handler(timelineEntry)

            } else if complication.family == .modularSmall {

                let template = CLKComplicationTemplateModularSmallRingImage()
                guard let image = UIImage(named: "Modular") else { handler(nil); return}
                template.imageProvider = CLKImageProvider(onePieceImage: image)
                let timelineEntry = CLKComplicationTimelineEntry(date: Date(), complicationTemplate: template)
                handler(timelineEntry)

            } else {

                handler(nil)

            }
        }
    }

    func getSupportedTimeTravelDirections(for complication: CLKComplication, withHandler handler: @escaping (CLKComplicationTimeTravelDirections) -> Void) {
        handler([])
    }
    func getLocalizableSampleTemplate(for complication: CLKComplication, withHandler handler: @escaping (CLKComplicationTemplate?) -> Void) {
        if #available(watchOSApplicationExtension 5.0, *) {
            if complication.family == .circularSmall {

                let template = CLKComplicationTemplateCircularSmallRingImage()
                guard let image = UIImage(named: "Circular") else { handler(nil); return}
                template.imageProvider = CLKImageProvider(onePieceImage: image)
                handler(template)

            } else if complication.family == .utilitarianSmall {

                let template = CLKComplicationTemplateUtilitarianSmallRingImage()
                guard let image = UIImage(named: "Utilitarian") else { handler(nil); return}
                template.imageProvider = CLKImageProvider(onePieceImage: image)
                handler(template)

            } else if complication.family == .modularSmall {

                let template = CLKComplicationTemplateModularSmallRingImage()
                guard let image = UIImage(named: "Modular") else { handler(nil); return}
                template.imageProvider = CLKImageProvider(onePieceImage: image)
                handler(template)

            } else if complication.family == .graphicCircular {
                let template = CLKComplicationTemplateGraphicCircularImage()
                guard let image = UIImage(named: "GraphicCircular") else { handler(nil); return}
                template.imageProvider = CLKFullColorImageProvider(fullColorImage: image)
                handler(template)

            } else if complication.family == .graphicBezel {
                let template = CLKComplicationTemplateModularSmallRingImage()
                guard let image = UIImage(named: "GraphicBezel") else { handler(nil); return}
                template.imageProvider = CLKImageProvider(onePieceImage: image)
                handler(template)

            } else if complication.family == .graphicCorner {
                let template = CLKComplicationTemplateGraphicCornerCircularImage()
                guard let image = UIImage(named: "GraphicCorner") else { handler(nil); return}
                template.imageProvider = CLKFullColorImageProvider(fullColorImage: image)
                handler(template)

            } else {

                handler(nil)

            }
        } else {
            if complication.family == .circularSmall {

                let template = CLKComplicationTemplateCircularSmallRingImage()
                guard let image = UIImage(named: "Circular") else { handler(nil); return}
                template.imageProvider = CLKImageProvider(onePieceImage: image)
                handler(template)

            } else if complication.family == .utilitarianSmall {

                let template = CLKComplicationTemplateUtilitarianSmallRingImage()
                guard let image = UIImage(named: "Utilitarian") else { handler(nil); return}
                template.imageProvider = CLKImageProvider(onePieceImage: image)
                handler(template)

            } else if complication.family == .modularSmall {

                let template = CLKComplicationTemplateModularSmallRingImage()
                guard let image = UIImage(named: "Modular") else { handler(nil); return}
                template.imageProvider = CLKImageProvider(onePieceImage: image)
                handler(template)

            } else {

                handler(nil)

            }
        }


    }







}

【问题讨论】：

标签： ios swift xcode apple-watch apple-watch-complication

【解决方案1】：

你和我同时遇到了这个问题。从这个页面：

https://forums.developer.apple.com/thread/108598

在手表扩展的Link Binary With Libraries 阶段将ClockKit.framework 添加为可选。这立即解决了我的问题。

【讨论】：