如何在iOS应用程序中从健康应用程序中获取活动的唯一标识符？

import HealthKit

let healthStore = HKHealthStore()

func requestAuthorization() {
    let readTypes: Set<HKObjectType> = [HKObjectType.workoutType()]
    
    healthStore.requestAuthorization(toShare: nil, read: readTypes) { (success, error) in
        if success {
            // 用户已授权访问健康数据
        } else {
            // 授权请求失败
        }
    }
}

func queryWorkouts() {
    let workoutType = HKObjectType.workoutType()
    let query = HKSampleQuery(sampleType: workoutType, predicate: nil, limit: HKObjectQueryNoLimit, sortDescriptors: nil) { (query, samples, error) in
        if let workouts = samples as? [HKWorkout] {
            for workout in workouts {
                let activityType = workout.workoutActivityType
                let startDate = workout.startDate
                let endDate = workout.endDate
                let duration = workout.duration
                
                // 在这里处理活动数据
            }
        }
    }
    
    healthStore.execute(query)
}