谓词中的HKQueryOptions

import HealthKit

let healthStore = HKHealthStore()

let startDate = Date.distantPast
let endDate = Date()

let predicate = HKQuery.predicateForSamples(withStart: startDate, end: endDate, options: .strictStartDate)

let query = HKSampleQuery(sampleType: HKObjectType.quantityType(forIdentifier: .heartRate)!, predicate: predicate, limit: HKObjectQueryNoLimit, sortDescriptors: nil) { (query, samples, error) in
    guard let heartRateSamples = samples as? [HKQuantitySample] else {
        print("An error occurred: \(error?.localizedDescription ?? "Unknown error")")
        return
    }
    
    for sample in heartRateSamples {
        let heartRate = sample.quantity.doubleValue(for: HKUnit(from: "count/min"))
        print("Heart rate: \(heartRate)")
    }
}

healthStore.execute(query)