HKSampleQuery for HKWorkout

Question

我在查询HKWorkout时遇到问题。

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)
}

我用代码保存并运行良好。即使我也可以像一样使用HKSampleQuery进行查询

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，当我尝试用HKWorkoutType查询时，我什么都没得到。

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。没有来自1、2、3的日志发表评论。

当我使用class func predicateForObjectsFromWorkout(workout: HKWorkout!) -> NSPredicate!时，它按我的预期工作。

为什么HKWorkoutType()查询无法获取任何信息？

BKLog只是一个成型的日志函数

Answer 1

这似乎是iOS8.1中修复的HealthKit错误。我在8.1之前也遇到过同样的问题，但同样的代码在8.1中运行得很好。我检查使用8.1使用：

    NSOperatingSystemVersion iOSVersionInWhichHealthKitActuallyWorks;
    iOSVersionInWhichHealthKitActuallyWorks.majorVersion = 8;
    iOSVersionInWhichHealthKitActuallyWorks.minorVersion = 1;
    iOSVersionInWhichHealthKitActuallyWorks.patchVersion = 0;
    if (![[NSProcessInfo processInfo]isOperatingSystemAtLeastVersion:iOSVersionInWhichHealthKitActuallyWorks]) {
    }