查询HealthKit for HKCategoryTypeIdentifierSleepAnalysis

Question

我已经构建了一个导入睡眠样本的方法，但是我无法获得它来返回睡眠数小时的适当值。

查询睡眠数据的方法如下所示：

func updateHealthCategories() {

    let categoryType = HKObjectType.categoryTypeForIdentifier(HKCategoryTypeIdentifierSleepAnalysis)

    let start = NSDate(dateString:"2015-11-04")
    let end = NSDate(dateString:"2015-11-05")

    let categorySample = HKCategorySample(type: categoryType!,
        value: HKCategoryValueSleepAnalysis.Asleep.rawValue,
        startDate: start,
        endDate: end)

    self.hoursSleep = Double(categorySample.value)

    print(categorySample.value)
}

日期的格式如下：

extension NSDate
{
    convenience
    init(dateString:String) {
        let dateStringFormatter = NSDateFormatter()
        dateStringFormatter.dateFormat = "yyyy-MM-dd"
        dateStringFormatter.locale = NSLocale(localeIdentifier: "en_US_POSIX")
        let d = dateStringFormatter.dateFromString(dateString)!
        self.init(timeInterval:0, sinceDate:d)
    }
}

我调用11月4日至5日的数据，其中包含以下数据：

​

​

​

​

但是，categorySample.value返回的是1而不是3。

Answer 1

您正在访问的值是类别示例值、HKCategoryType，而不是睡眠时数。

HKCategoryTypeIdentifierSleepAnalysis的定义

typedef enum : NSInteger {
   HKCategoryValueSleepAnalysisInBed,
   HKCategoryValueSleepAnalysisAsleep,
} HKCategoryValueSleepAnalysis;

定义两个可能的值，0或1，其中1的值与HKCategoryValueSleepAnalysisAsleep匹配。

要想入睡需要设置一个HKSampleQuery。

代码如下所示：

if let sleepType = HKObjectType.categoryTypeForIdentifier(HKCategoryTypeIdentifierSleepAnalysis) {

    let predicate = HKQuery.predicateForSamplesWithStartDate(startDate, endDate: endDate, options: .None)
    let sortDescriptor = NSSortDescriptor(key: HKSampleSortIdentifierEndDate, ascending: false)
    let query = HKSampleQuery(sampleType: sleepType, predicate: predicate, limit: 30, sortDescriptors: [sortDescriptor]) { (query, tmpResult, error) -> Void in                  
        if let result = tmpResult {
            for item in result {
                if let sample = item as? HKCategorySample {                     
                    let value = (sample.value == HKCategoryValueSleepAnalysis.InBed.rawValue) ? "InBed" : "Asleep"                     
                    print("sleep: \(sample.startDate) \(sample.endDate) - source: \(sample.source.name) - value: \(value)")
                    let seconds = sample.endDate.timeIntervalSinceDate(sample.startDate)
                    let minutes = seconds/60
                    let hours = minutes/60
                }
            }
        }
    }

    healthStore.executeQuery(query)
}

我从http://benoitpasquier.fr/sleep-healthkit/中总结了这一点。

Answer 2

这是Swift 5，iOS 16兼容的答案，如果有人还在寻找。您可以根据需要解析/操作数据。

func getSleepAnalysis() {
    let healthStore = HKHealthStore()
    let endDate = Date()

    guard let startDate = Calendar.current.date(byAdding: .day, value: -7, to: endDate) else {
        fatalError("*** Unable to create the start date ***")
    }


    // first, we define the object type we want
    guard let sleepType = HKObjectType.categoryType(forIdentifier: .sleepAnalysis) else {
        return
    }

    // we create a predicate to filter our data
    let predicate = HKQuery.predicateForSamples(withStart: startDate, end: endDate, options: .strictStartDate)

    // I had a sortDescriptor to get the recent data first
    let sortDescriptor = NSSortDescriptor(key: HKSampleSortIdentifierEndDate, ascending: false)

    // we create our query with a block completion to execute
    let query = HKSampleQuery(sampleType: sleepType, predicate: predicate, limit: Int(HKObjectQueryNoLimit), sortDescriptors: [sortDescriptor]) { (query, result, error) in
        if error != nil {
            // handle error
            return
        }

        if let result = result {

            // do something with those data
            result
                .compactMap({ $0 as? HKCategorySample })
                .forEach({ sample in
                    guard let sleepValue = HKCategoryValueSleepAnalysis(rawValue: sample.value) else {
                        return
                    }

                    let isAsleep = sleepValue == .asleep
                    print("HealthKit sleep \(sample.startDate) \(sample.endDate) - source \(sample.sourceRevision.source.name) - isAsleep \(isAsleep)")
                })
        }
    }

    // finally, we execute our query
    healthStore.execute(query)
}

我希望您能在此之前获得SleepAnalysis的授权，以便检索数据。