[英]Query HealthKit for HKCategoryTypeIdentifierSleepAnalysis
我已经构建了一个导入睡眠样本的方法,但我无法让它在几小时内返回正确的值。
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)
}
}
我正在调用11月4日至5日的数据,其中包含以下数据:
但是, categorySample.value
返回1
而不是3
。
您要访问的值是类别样本值, HKCategoryType
,而不是睡眠小时数。
HKCategoryTypeIdentifierSleepAnalysis
的定义
typedef enum : NSInteger {
HKCategoryValueSleepAnalysisInBed,
HKCategoryValueSleepAnalysisAsleep,
} HKCategoryValueSleepAnalysis;
定义两个可能的值,0或1,其中值1与HKCategoryValueSleepAnalysisAsleep
匹配。
让小时入睡需要设置HKSampleQuery
。
代码看起来像这样:
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)
}
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