一、简介

HealthKit是一款用于搜集和办理医疗和健康相关数据的开发工具包，它为开发者供给了拜访用户健康数据的API和框架，并使得这些数据能够与iOS设备上的其他应用程序相互共享。

HealthKit允许应用程序搜集和办理各种类型的健康数据，包含身体丈量数据（如体重、身高和心率）、健身数据（如步数和距离）、饮食数据、睡觉数据和心理健康数据等。这些数据能够从多个来历搜集，如从硬件设备（如智能手表、智能手机和健身跟踪器）中获取，或由用户手动输入。

二、权限配置

1. 在开发者账号中勾选HealthKit

2. 在targets的capabilities中添加HealthKit。

3. infoPlist需要配置权限

Privacy - Health Share Usage Description
需要您的同意，才能访问健康更新，给您带来更好的服务
Privacy - Health Update Usage Description
需要您的同意，才能分享健康数据，给您带来更好的服务

注意：iOS13 这里描述太粗糙，会导致程序崩溃。

三、创建健康数据管理类

1. 引入头文件

import HealthKit

2. 健康数据读写权限

// 写权限private func dataTypesToWrite() -> Set<HKSampleType> {// 步数let stepCountType = HKObjectType.quantityType(forIdentifier: .stepCount)// 身高let heightType = HKObjectType.quantityType(forIdentifier: .height)// 体重let weightType = HKObjectType.quantityType(forIdentifier: .bodyMass)// 活动能量let activeEnergyType = HKObjectType.quantityType(forIdentifier: .activeEnergyBurned)// 体温let temperatureType = HKObjectType.quantityType(forIdentifier: .bodyTemperature)// 睡眠分析let sleepAnalysisType = HKObjectType.categoryType(forIdentifier: .sleepAnalysis)let setTypes = Set([stepCountType, heightType, weightType, activeEnergyType, temperatureType, sleepAnalysisType].compactMap { $0 })return setTypes}// 读权限private func dataTypesToRead() -> Set<HKObjectType> {// 步数let stepCountType = HKObjectType.quantityType(forIdentifier: .stepCount)// 身高let heightType = HKObjectType.quantityType(forIdentifier: .height)// 体重let weightType = HKObjectType.quantityType(forIdentifier: .bodyMass)// 体温let temperatureType = HKObjectType.quantityType(forIdentifier: .bodyTemperature)// 出生日期let birthdayType = HKObjectType.characteristicType(forIdentifier: .dateOfBirth)// 性别let sexType = HKObjectType.characteristicType(forIdentifier: .biologicalSex)// 步数+跑步距离let distance = HKObjectType.quantityType(forIdentifier: .distanceWalkingRunning)// 活动能量let activeEnergyType = HKObjectType.quantityType(forIdentifier: .activeEnergyBurned)// 睡眠分析let sleepAnalysisType = HKObjectType.categoryType(forIdentifier: .sleepAnalysis)let setTypes = Set([stepCountType, heightType, weightType, activeEnergyType, birthdayType, sexType, distance, temperatureType, sleepAnalysisType].compactMap { $0 })return setTypes}

3. 检查权限

/// 检查是否支持获取健康数据public func authorizeHealthKit(_ compltion: ((_ success: Bool, _ error: Error?) -> Void)?) {guard HKHealthStore.isHealthDataAvailable() == true else {let error = NSError(domain: "不支持健康数据", code: 2, userInfo: [NSLocalizedDescriptionKey: "HealthKit is not available in th is Device"])if let compltion = compltion {compltion(false, error)}return}let writeDataTypes = dataTypesToWrite()let readDataTypes = dataTypesToRead()healthStore.requestAuthorization(toShare: writeDataTypes, read: readDataTypes) { success, error inif let compltion = compltion {compltion(success, error)}}}

4. 读取步数数据

/// 获取步数public func getStepCount(_ completion: @escaping ((_ stepValue: String?, _ error: Error?) -> Void)) {// 要检索的数据类型。guard let stepType = HKObjectType.quantityType(forIdentifier: .stepCount) else {let error = NSError(domain: "不支持健康数据", code: 2, userInfo: [NSLocalizedDescriptionKey: "HealthKit is not available in th is Device"])completion(nil, error)return}// NSSortDescriptors用来告诉healthStore怎么样将结果排序。let start = NSSortDescriptor.init(key: HKSampleSortIdentifierStartDate, ascending: false)let end = NSSortDescriptor.init(key: HKSampleSortIdentifierEndDate, ascending: false)/*@param         sampleType      要检索的数据类型。@param         predicate       数据应该匹配的基准。@param         limit           返回的最大数据条数@param         sortDescriptors 数据的排序描述@param         resultsHandler  结束后返回结果*/let query = HKSampleQuery.init(sampleType: stepType, predicate: HealthKitManager.getStepPredicateForSample(), limit: HKObjectQueryNoLimit, sortDescriptors: [start, end]) { _, results, error inguard let results = results else {completion(nil, error)return}print("resultCount = \(results.count) result = \(results)")// 把结果装换成字符串类型var totleSteps = 0results.forEach({ quantitySample inguard let quantitySample = quantitySample as? HKQuantitySample else {return}let quantity = quantitySample.quantitylet heightUnit = HKUnit.count()let usersHeight = quantity.doubleValue(for: heightUnit)totleSteps += Int(usersHeight)})print("最新步数：\(totleSteps)")completion("\(totleSteps)", error)}healthStore.execute(query)}

5. 写入健康数据

/// 写入数据public func writeStep() {let steps = HKObjectType.quantityType(forIdentifier: .stepCount)!let quantity = HKQuantity(unit: HKUnit.count(), doubleValue: 1000)let now = Date()let start = now.addingTimeInterval(-3600 * 24)let end = nowlet sample = HKQuantitySample(type: steps, quantity: quantity, start: start, end: end)let healthStore = HKHealthStore()healthStore.save(sample) { (success, _) inif success {// 数据已写入 HealthKit} else {// 写入数据失败}}}

四、运行获取权限页面