如何根据 Apple Health 中的时间戳查询 healthkit 数据？ [关闭]

Posted 2023-03-10

【中文标题】如何根据 Apple Health 中的时间戳查询 healthkit 数据？ [关闭]

【英文标题】：How to query healthkit data based upon timestamp in Apple health? [closed]

【发布时间】：2020-12-10 02:45:53

【问题描述】：

在特定时间段内收集activity 信息（例如Calories Burned、Exercise time）的最佳方法是什么？

任何方法或提示都是可以理解的。谢谢

【参考方案1】：

您可以在 HealthKit 中使用查询类。例如：

let calendar = NSCalendar.currentCalendar()
 
let interval = NSDateComponents()
interval.day = 7
 
// Set the anchor date to Monday at 3:00 a.m.
let anchorComponents = calendar.components([.Day, .Month, .Year, .Weekday], fromDate: NSDate())
 
 
let offset = (7 + anchorComponents.weekday - 2) % 7
anchorComponents.day -= offset
anchorComponents.hour = 3
 
guard let anchorDate = calendar.dateFromComponents(anchorComponents) else 
    fatalError("*** unable to create a valid date from the given components ***")

 
guard let quantityType = HKObjectType.quantityTypeForIdentifier(HKQuantityTypeIdentifierStepCount) else 
    fatalError("*** Unable to create a step count type ***")

 
// Create the query
let query = HKStatisticsCollectionQuery(quantityType: quantityType,
                                        quantitySamplePredicate: nil,
                                        options: .CumulativeSum,
                                        anchorDate: anchorDate,
                                        intervalComponents: interval)
 
// Set the results handler
query.initialResultsHandler = 
    query, results, error in
    
    guard let statsCollection = results else 
        // Perform proper error handling here
        fatalError("*** An error occurred while calculating the statistics: \(error?.localizedDescription) ***")
    
    
    let endDate = NSDate()
    
    guard let startDate = calendar.dateByAddingUnit(.Month, value: -3, toDate: endDate, options: []) else 
        fatalError("*** Unable to calculate the start date ***")
    
    
    // Plot the weekly step counts over the past 3 months
    statsCollection.enumerateStatisticsFromDate(startDate, toDate: endDate)  [unowned self] statistics, stop in
        
        if let quantity = statistics.sumQuantity() 
            let date = statistics.startDate
            let value = quantity.doubleValueForUnit(HKUnit.countUnit())
            
            // Call a custom method to plot each data point.
            self.plotWeeklyStepCount(value, forDate: date)
        
    

 
healthStore.executeQuery(query)

您需要根据自己的情况使用这些代码。