ios – 如何在后台刷新的复杂功能上显示HealthKit数据？

当从getNextRequestedUpdateDateWithHandler中设置的日期触发复杂的后台刷新时,我试图从手表本身获取数据.但是,当我调用HKHealthStore的执行@L_673_14@时,如果应用程序(或在这种情况下,它)不会返回任何查询结果并发症)正在运行后台.我还尝试设置一个HKAnchoredObject查询,该查询应该在进程恢复时立即返回我的结果,但除非我在手表上手动启动应用程序扩展,否则这似乎也不会返回任何结果.这是我的监视代码,在请求运行状况工具包权限后从我的ExtensionDelegate的init@L_673_14@调用：

func setupComplicationDataCache() {
    let Now = NSDate()
    var startDate: NSDate? = nil
    var interval: NSTimeInterval = 0

    self.calendar.rangeOfUnit(NSCalendarUnit.Day,startDate: &startDate,interval: &interval,forDate: Now)
    let stepSampleType = HKQuantityType.quantityTypeForIdentifier(HKQuantityTypEIDentifierStepCount)!

    // Match samples with a start date after the workout start
    let preDicate = HKQuery.preDicateForSamplesWithStartDate(startDate,endDate: nil,options: .NonE)
    let query = HKAnchoredObjectQuery(type: stepSampleType,preDicate: preDicate,anchor: nil,limit: 0) { (query,samples,deletedObjects,anchor,error) -> Void in
        // Handle when the query first returns results
        self.handleStepResults(query,samples: samples,deletedObjects: deletedObjects,anchor: anchor,error: error)
    }

    query.updateHandler = { (query,error) -> Void in
        // Handle update notifications after the query has initially run
        self.handleStepResults(query,error: error)
    }

    self.healthStore.executeQuery(query);
}

func handleStepResults(query: HKAnchoredObjectQuery,samples: [HKSample]?,deletedObjects: [HKdeletedObject]?,anchor: HKQueryAnchor?,error: NSError?) {
    if error != nil {
        self.timelineModel.currentEntry = TimelineEntrymodel(value: NSnumber(int: -1),endDate: NSDate())
    } else if samples == nil || samples?.count == 0 {
        self.timelineModel.currentEntry = TimelineEntrymodel(value: NSnumber(int: 0),endDate: NSDate())
    } else {
        let newStepSamples = samples as! [HKQuantitySample]
        var stepCount = self.timelineModel.currentEntry.value.doubleValue
        var currentDate = self.timelineModel.currentEntry.endDate

        // Add the current entry to the collection of past entries
        self.timelineModel.pastEntries.append(self.timelineModel.currentEntry)

        // Add all new entries to the collection of past entries
        for result in newStepSamples {
            stepCount += result.quantity.doubleValueForUnit(self.countUnit)
            currentDate = result.endDate
            self.timelineModel.pastEntries.append(TimelineEntrymodel(value: NSnumber(double: stepCount),endDate: currentDatE))
        }

        // Retrieve the latest sample as the current item
        self.timelineModel.currentEntry = self.timelineModel.pastEntries.popLast()
        if self.timelineModel.currentEntry == nil {
            self.timelineModel.currentEntry = TimelineEntrymodel(value: NSnumber(int: -3),endDate: NSDate())
        }
    }

    // Reload the complication
    let complicationServer = CLKComplicationServer.sharedInstance()
    for complication in complicationServer.activeComplications {
        complicationServer.reloadTimelineForComplication(complication)
    }
}

我也尝试使用HKObserverQuery从iPhone获取数据.我有观察者查询,可以每小时唤醒一次iPhone(步骤数据的最大时间).但是,如果在观察者完成处理程序执行我的步骤查询时iPhone被锁定,则HKHealthStore的execute@L_673_14@也拒绝返回任何查询结果.我认为这在这里是有道理的,并且可能没有办法@L_450_33@这个问题,因为Apple’s docs提到当设备被锁定而你无法从商店读取时(仅写入),Health Store会被加密.但是在手表的情况下,当它在某人的手腕上没有锁定时,屏幕才会关闭.

有没有人知道如何在后台进行刷新时,无论是在iOS还是在watchOS 2上,都会让HealthKit更新出现在并发症上？