如何使用HealthKit从特定日期获得准确的24小时睡眠数据？

import HealthKit

// 确保设备支持HealthKit
guard HKHealthStore.isHealthDataAvailable() else {
    print("HealthKit is not available on this device.")
    return
}

// 创建HealthKit存储实例
let healthStore = HKHealthStore()

// 定义睡眠分析类型
guard let sleepType = HKObjectType.categoryType(forIdentifier: .sleepAnalysis) else {
    print("Sleep analysis type is not available.")
    return
}

// 设置日期范围
let calendar = NSCalendar.current
let startDate = calendar.date(bySettingHour: 0, minute: 0, second: 0, of: specificDate)!
let endDate = calendar.date(byAdding: .day, value: 1, to: startDate)!

// 创建日期过滤器
let predicate = HKQuery.predicateForSamples(withStart: startDate, end: endDate, options: .strictStartDate)

// 创建查询
let query = HKSampleQuery(sampleType: sleepType, predicate: predicate, limit: HKObjectQueryNoLimit, sortDescriptors: nil) { (query, samples, error) in
    guard let sleepSamples = samples as? [HKCategorySample] else {
        print("An error occurred while fetching sleep samples: \(error?.localizedDescription ?? "Unknown error")")
        return
    }
    
    for sample in sleepSamples {
        let sleepDate = sample.startDate
        let sleepDuration = sample.endDate.timeIntervalSince(sleepDate)
        print("Sleep start: \(sleepDate), Duration: \(sleepDuration) seconds")
    }
}

// 执行查询
healthStore.execute(query)