'attempt to convert incompatible units' HealthKit 统计查询错误 (swift)

Question

我需要计算卡路里的累计总和，出现错误'NSInvalidArgumentException'，原因：'Attempt to convert incompatible units: kcal, count'

在线：

let numberOfCalories = Int(sumQuantity.doubleValueForUnit(self.caloriesUnit))

我的单位被定义为：

let caloriesUnit = HKUnit.countUnit()

应该有所不同吗？我怎样才能return卡路里的数量？

我的函数是：

func queryCaloriesSum() {

    let caloriesQuantityType = HKObjectType.quantityTypeForIdentifier(HKQuantityTypeIdentifierActiveEnergyBurned) //else //{ return nil }

    let sumOption = HKStatisticsOptions.CumulativeSum
    let statisticsSumQuery = HKStatisticsQuery(quantityType: caloriesQuantityType!, quantitySamplePredicate: nil, options: sumOption) { [unowned self] (query, result, error) in
        if let sumQuantity = result?.sumQuantity() {

           // let headerView = self.tableView.dequeueReusableCellWithIdentifier(self.totalStepsCellIdentifier)! as UITableViewCell

            let numberOfCalories = Int(sumQuantity.doubleValueForUnit(self.caloriesUnit))

        print(numberOfCalories)
        }

    }
    healthStore.executeQuery(statisticsSumQuery)
    print(statisticsSumQuery)

}

Answer 1

My unit has been defined as:
let caloriesUnit = HKUnit.countUnit()
Should it be something different? How can I return the number of calories?

使用 calories 卡路里怎么样？

'attempt to convert incompatible units' HealthKit 统计查询错误 (swift)

'attempt to convert incompatible units' error on HealthKit Statistics query (swift)

swift

healthkit