使用HKActivitySummaryQuery的iOS HealthKit项目-摘要始终为零

问题描述

目标：从HealthKit中读取我的活动数据（即活动环数据-移动卡路里，锻炼时间和站立时间）

遇到的问题：结果处理程序返回nil HKActivitySummary数组

我尝试过的事情：

我已将HealthKit功能添加到项目中，并添加了两个info.plist要求：

隐私-健康共享使用说明

隐私-运行状况更新使用情况说明

并确保在iPhone上出现针对HealthKit的权限请求弹出窗口时，我点击了“全部允许”。

我还记录了许多周的活动数据，所以也没问题。

我如何检索HKActivitySummary对象的数组以在我的iOS应用程序中复制环。

我的代码：

override func viewDidLoad() {
  super.viewDidLoad() 
  startQueryForActivitySummary(view: self.view)
}

func startQueryForActivitySummary(view: UIView) {
  
  let calendar = NSCalendar.current
  let endDate = Date()
  
  guard let startDate = calendar.date(byAdding: .day,value: -7,to: endDate) else {
    fatalError("*** Unable to create the start date ***")
  }
  
  let units: Set<Calendar.Component> = [.day,.month,.year,.era]
  var startDateComponents = calendar.dateComponents(units,from: startDate)
  startDateComponents.calendar = calendar
  var endDateComponents = calendar.dateComponents(units,from: endDate)
  endDateComponents.calendar = calendar
  
  let queryPredicate = HKQuery.predicate(forActivitySummariesBetweenStart: startDateComponents,end: endDateComponents)
  let query = HKActivitySummaryQuery(predicate: queryPredicate) { (query,summaries,error) -> Void in
    if let summaries = summaries { // print(summaries) before this line will always return nil.
      if let summary = summaries.first {
        let activeEnergyBurned = summary.activeEnergyBurned.doubleValue(for: HKUnit.kilocalorie())
        let activeEnergyBurnedGoal = summary.activeEnergyBurnedGoal.doubleValue(for: HKUnit.kilocalorie())
        let activeEnergyBurnGoalPercent = round(activeEnergyBurned/activeEnergyBurnedGoal)
        
        let frame    = CGRect(x: 0,y: 0,width: 200,height: 200)
        let ringView = HKActivityRingView(frame: frame)
        view.addSubview(ringView)
        ringView.setActivitySummary(summary,animated: true)
      }
    }
  }
  
  let allTypes = Set([HKObjectType.workoutType(),HKObjectType.quantityType(forIdentifier: .activeEnergyBurned)!])
  
  let healthStore = HKHealthStore()
  healthStore.requestAuthorization(toShare: allTypes,read: allTypes) { (success,error) in 
    healthStore.execute(query)
  }
} 

解决方法

我认为您缺少权限HKObjectType.activitySummaryType（）

请输入以下内容：

    let allTypes = Set([
            HKObjectType.workoutType(),HKObjectType.quantityType(forIdentifier: .activeEnergyBurned)!,HKObjectType.activitySummaryType()
        ])

以下是文档：https://developer.apple.com/documentation/healthkit/hkobjecttype/1615319-activitysummarytype