获取心率健康工具包的HKStatisticsCollectionQuery

import HealthKit

let healthStore = HKHealthStore()

let heartRateType = HKObjectType.quantityType(forIdentifier: .heartRate)!

let typesToShare: Set = []
let typesToRead: Set = [heartRateType]

healthStore.requestAuthorization(toShare: typesToShare, read: typesToRead) { (success, error) in
    if success {
        // 权限请求成功
    } else {
        // 处理错误
    }
}

let calendar = Calendar.current

// 设置查询的时间间隔
var interval = DateComponents()
interval.minute = 1

// 设置查询的开始和结束日期
let anchorDate = calendar.startOfDay(for: Date())
let startDate = calendar.date(byAdding: .day, value: -7, to: anchorDate)!
let endDate = Date()

// 创建查询
let query = HKStatisticsCollectionQuery(
    quantityType: heartRateType,
    quantitySamplePredicate: nil,
    options: .discreteAverage,
    anchorDate: anchorDate,
    intervalComponents: interval
)

// 处理查询结果
query.initialResultsHandler = { query, results, error in
    if let statsCollection = results {
        statsCollection.enumerateStatistics(from: startDate, to: endDate) { statistics, stop in
            if let quantity = statistics.averageQuantity() {
                let heartRate = quantity.doubleValue(for: HKUnit(from: "count/min"))
                print("Heart Rate: \(heartRate) BPM")
            }
        }
    }
}

// 执行查询
healthStore.execute(query)