如何获取之前日期的HealthKit总步数

import HealthKit

// 确保设备支持HealthKit
guard HKHealthStore.isHealthDataAvailable() else {
    print("HealthKit不可用")
    return
}

// 创建步数类型的HealthKit对象
guard let stepsQuantityType = HKQuantityType.quantityType(forIdentifier: .stepCount) else {
    print("步数类型不可用")
    return
}

// 设置查询日期
let calendar = NSCalendar.current
let startDate = calendar.date(byAdding: .day, value: -1, to: Date())!
let endDate = Date()

// 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: stepsQuantityType, predicate: predicate, limit: HKObjectQueryNoLimit, sortDescriptors: nil) { (query, results, error) in
    guard let stepsSamples = results as? [HKQuantitySample] else {
        print("无法获取步数样本")
        return
    }
    
    var totalSteps: Double = 0
    for stepsSample in stepsSamples {
        totalSteps += stepsSample.quantity.doubleValue(for: HKUnit.count())
    }
    
    print("之前日期的总步数: \(totalSteps)")
}

// 执行查询
let healthStore = HKHealthStore()
healthStore.execute(query)