使用 Swift 从 HealthKit 读取日期间隔的步骤
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【中文标题】使用 Swift 从 HealthKit 读取日期间隔的步骤【英文标题】:Reading steps for date intervals from HealthKit using Swift 【发布时间】:2016-08-02 06:00:36 【问题描述】:我有这个方法可以从 HealthKit 中读取今天的步骤。
func todaySteps(completion: (Double, NSError?) -> () )
// this function gives you all of the steps the user has taken since the beginning of the current day.
let type = HKSampleType.quantityTypeForIdentifier(HKQuantityTypeIdentifierStepCount) // The type of data we are requesting
let date = NSDate()
print(date)
let cal = NSCalendar(calendarIdentifier: NSCalendarIdentifierGregorian)!
let newDate = cal.startOfDayForDate(date)
print(newDate)
let predicate = HKQuery.predicateForSamplesWithStartDate(newDate, endDate: NSDate(), options: .None) // Our search predicate which will fetch all steps taken today
// The actual HealthKit Query which will fetch all of the steps and add them up for us.
let query = HKSampleQuery(sampleType: type!, predicate: predicate, limit: 0, sortDescriptors: nil) query, results, error in
var steps: Double = 0
if results?.count > 0
for result in results as! [HKQuantitySample]
steps += result.quantity.doubleValueForUnit(HKUnit.countUnit())
completion(steps, error)
executeQuery(query)
现在让我们说如果我想阅读从 2016 年 6 月 1 日到 2016 年 6 月 7 日每天的总步数
我该怎么做,请指导我谢谢
【问题讨论】:
【参考方案1】:使用它来获取多个日期的步骤
func MultipleDaysStepsAndActivities(_ startDate:Date, completion: @escaping (NSDictionary, [HealthKitManuallActivity], NSError?) -> () )
let calender = NSCalendar.current
let now = Date()
_ = calender.component(.year, from: now)
let type = HKSampleType.quantityType(forIdentifier: HKQuantityTypeIdentifier.stepCount) // The type of data we are requesting
let predicate = HKQuery.predicateForSamples(withStart: startDate, end: now, options: HKQueryOptions())
var interval = DateComponents()
interval.day = 1
let query = HKStatisticsCollectionQuery(quantityType: type!, quantitySamplePredicate: predicate, options: [.cumulativeSum], anchorDate: startDate, intervalComponents:interval)
query.initialResultsHandler = query, results, error in
if error != nil
print(error as Any)
return
var dict:[String:Double] = [:]
if let myResults = results
myResults.enumerateStatistics(from: startDate, to: now)
statistics, stop in
if let quantity = statistics.sumQuantity()
let steps = quantity.doubleValue(for: HKUnit.count())
print("Steps = \(steps.rounded())")
dict[self.fmt.string(from: statistics.startDate)] = steps.rounded()
execute(query)
【讨论】:
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