HKSampleQuery for HKWorkout

Question

我有一个问题要查询HKWorkout。

下面是我用来保存HKWorkout和HKQuantitySample的代码。

func workout(#distance:Double, start: NSTimeInterval, paused:NSTimeInterval, resume:NSTimeInterval, end:NSTimeInterval, calory:Double) -> HKWorkout {

    var event1_     = HKWorkoutEvent(type: HKWorkoutEventType.Pause, date: self.minutesBeforeNow(paused))
    var event2_     = HKWorkoutEvent(type: HKWorkoutEventType.Resume, date: self.minutesBeforeNow(resume))
    var calories_   = HKQuantity(unit: HKUnit.calorieUnit(), doubleValue: calory)
    var distance_   = HKQuantity(unit: HKUnit.meterUnit(), doubleValue: distance)
    var meta_ = [
        "TITLE":"WORKOUT_TEST",
        "TEAM":"TEAM WAG",
        "ID":"\(arc4random()%999)"
    ]

    var workout_ = HKWorkout(
        activityType: HKWorkoutActivityType.Cycling,
        startDate: self.minutesBeforeNow(start),
        endDate: self.minutesBeforeNow(end),
        workoutEvents: [event1_, event2_],
        totalEnergyBurned: calories_,
        totalDistance: distance_,
        metadata: meta_)

    return workout_
}

func quantity(#distance:Double, start:NSTimeInterval, end:NSTimeInterval) -> HKQuantitySample {

    var meta_ = [
        "TITLE":"QUANTITY_SAMPLE_TEST",
        "ID":"\(arc4random()%99)"]
    var sample_ = HKQuantitySample(
        type: HKObjectType.quantityTypeForIdentifier(HKQuantityTypeIdentifierDistanceCycling),
        quantity: HKQuantity(unit: HKUnit.meterUnit(), doubleValue: distance),
        startDate: self.minutesBeforeNow(start),
        endDate: self.minutesBeforeNow(end),
        metadata:meta_)

    return sample_
}

func minutesBeforeNow(min:NSTimeInterval) -> NSDate {
    return NSDate().dateByAddingTimeInterval(-60 * min)
}

我用密码保存，工作很好。甚至我都可以使用HKSampleQuery进行查询，比如

var predicate_ = HKQuery.predicateForSamplesWithStartDate(self.minutesBeforeNow(120), endDate: self.minutesBeforeNow(10), options: HKQueryOptions.None)
var query_ = HKSampleQuery(sampleType: HKSampleType.quantityTypeForIdentifier(HKQuantityTypeIdentifierDistanceCycling),
        predicate: predicate_,
        limit: 10,
        sortDescriptors: nil) { (let sampleQuery, let samples, let error) -> Void in

            BKLog("")
            for sample in samples as [HKQuantitySample]
            {
                var meter_  = sample.quantity.doubleValueForUnit(HKUnit.meterUnit())
                var km_     = meter_ / 1000
                BKLog("\(sample.metadata?.description), \(km_))")
            }
    };

然而，当我试图查询HKWorkoutType时，我什么也得不到。

var query_ = HKSampleQuery(
        sampleType: HKSampleType.workoutType(),
        predicate: nil,
        limit: 10,
        sortDescriptors: nil) { (let query, let objects, let error) -> Void in

            BKLog("")  // 1

            if(error != nil)
            {
                BKLog("ERROR : \(error.localizedDescription)")  // 2
                return
            }
            else
            {
                BKLog("WORKOUST : \(objects.count)")  // 3
            }


            for workout in objects {
            }
        }

奇怪的是我没有完成块的日志。没有日志从1，2，3注释日志。

当我使用class func predicateForObjectsFromWorkout(workout: HKWorkout!) -> NSPredicate!时，它就像我预期的那样起作用了。

为什么我不能从HKWorkoutType()查询中得到任何信息？

BKLog只是一个已形成的日志函数。

Answer 1

这似乎是在iOS8.1中修复的HealthKit错误。在8.1之前，我遇到了完全相同的问题，但在8.1中，相同的代码工作得很好。我使用以下方法检查使用8.1：

    NSOperatingSystemVersion iOSVersionInWhichHealthKitActuallyWorks;
    iOSVersionInWhichHealthKitActuallyWorks.majorVersion = 8;
    iOSVersionInWhichHealthKitActuallyWorks.minorVersion = 1;
    iOSVersionInWhichHealthKitActuallyWorks.patchVersion = 0;

    if (![[NSProcessInfo processInfo]isOperatingSystemAtLeastVersion:iOSVersionInWhichHealthKitActuallyWorks]) {
    }