查询实时心率变异性和心率值
查询实时心率变异性和心率值
提问于 2020-05-28 16:06:35
我正在试着从苹果手表中读出实时心率+心率变异性数据。我可以读取HRV值，但不知道如何实现heartRate的读取。有没有可能同时把它们读出来？
class HealthKitManager {
private var healthStore = HKHealthStore()
private var heartRateQuantity = HKUnit(from: "count/min")
private var heartRateVariability = HKUnit(from: "count/min")
private var activeQueries = [HKQuery]()
@Published var heartRateValues = HeartRateValues()
func autorizeHealthKit() {
let heartRate = HKObjectType.quantityType(forIdentifier: .heartRate)!
let heartRateVariability = HKObjectType.quantityType(forIdentifier: .heartRateVariabilitySDNN)!
let HKreadTypes: Set = [heartRate, heartRateVariability]
healthStore.requestAuthorization(toShare: nil, read: HKreadTypes) { (success, error) in
if let error = error {
print("Error requesting health kit authorization: \(error)")
}
}
}
func fetchHeartRateData(quantityTypeIdentifier: HKQuantityTypeIdentifier ) {
let devicePredicate = HKQuery.predicateForObjects(from: [HKDevice.local()])
let updateHandler: (HKAnchoredObjectQuery, [HKSample]?, [HKDeletedObject]?, HKQueryAnchor?, Error?) -> Void = {
query, samples, deletedObjects, queryAnchor, error in
guard let samples = samples as? [HKQuantitySample] else {
return
}
self.process(samples, type: quantityTypeIdentifier)
}
let query = HKAnchoredObjectQuery(type: HKObjectType.quantityType(forIdentifier: quantityTypeIdentifier)!, predicate: devicePredicate, anchor: nil, limit: HKObjectQueryNoLimit, resultsHandler: updateHandler)
query.updateHandler = updateHandler
healthStore.execute(query)
activeQueries.append(query)
}
private func process(_ samples: [HKQuantitySample], type: HKQuantityTypeIdentifier) {
for sample in samples {
if type == .heartRate {
DispatchQueue.main.async {
self.heartRateValues.heartRate = sample.quantity.doubleValue(for: self.heartRateQuantity)
}
}
// Not Sure about this part and readings show 0.0
else if type == .heartRateVariabilitySDNN {
DispatchQueue.main.async {
self.heartRateValues.heartRateVariability = sample.quantity.doubleValue(for: self.heartRateVariability)
}
}
}
}
func stopFetchingHeartRateData() {
activeQueries.forEach { healthStore.stop($0) }
activeQueries.removeAll()
DispatchQueue.main.async {
self.heartRateValues.heartRate = 0.0
self.heartRateValues.heartRateVariability = 0.0
}
}
}这里提出了一个类似的问题，但没有得到答案：Get Apple watch heartRateVariabilitySDNN realtime?
回答 1
Stack Overflow用户
发布于 2020-05-28 18:51:21
我也设法获得了小时数，只是补充道：
private func process(_ samples: [HKQuantitySample], type: HKQuantityTypeIdentifier) {
for sample in samples {
if type == .heartRate {
DispatchQueue.main.async {
self.heartRateValues.heartRate = sample.quantity.doubleValue(for: self.heartRateQuantity)
}
} else if type == .heartRateVariabilitySDNN {
DispatchQueue.main.async {
self.heartRateValues.heartRateVariability = sample.quantity.doubleValue(for: self.heartRateVariabilityQuantity)
}
}
}
}然后使用以下命令调用该类：
fetchHeartRateData(quantityTypeIdentifier: .heartRate)
fetchHeartRateData(quantityTypeIdentifier: .heartRateVariabilitySDNN)问题仍然是get的HRV值读取一次，并且不会随着时间的推移而改变。有什么想法吗？
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/62059881
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