如何从iOS中的健康工具包近实时获取心率数据?

我认为最好的方法是使用Watch通讯将心率数据发送到手机应用程序。

在监视代码中:

func send(heartRate: Int) {
    guard WCSession.default.isReachable else {
        print("Phone is not reachable")
        return
    }

    WCSession.default.sendMessage(["Heart Rate" : heartRate], replyHandler: nil) { error in
        print("Error sending message to phone: \(error.localizedDescription)")
    }
 }

在手机上,您通过以下方式接收数据:

func session(_ session: WCSession, didReceiveMessage message: [String: Any]) {
    if let heartRate = message["Heart Rate"] {
        print("Received heart rate: \(heartRate)")
    } else {
        print("Did not receive heart rate =[")
    }
}

这应该是实时的。或者还有另一个不太可靠的解决方案(imo),那就是每5秒左右执行一次心率查询,但如果我理解正确的话,你已经尝试过了,但它不起作用。

下面是我自己关于获取实时心率的分析。

1. 如果您使用iPhone app访问健康工具包数据,在这种情况下,健康工具包数据库不会频繁更新/刷新。因此,你的应用程序无法通过iPhone应用程序实时获取最新更新的数据。

2. 使用手表应用程序,你可以通过Health Kit DB访问近实时数据。Watch应用程序能够实时获取最新的健康套件数据。

3. 你需要将数据从手表传输到iPhone应用程序。这里有一个代码供你参考。您可以根据需要编写代码。你只需要通过 香港查询

let defaultSession = WCSession.default

let healthStore = HKHealthStore()

var currentHeartRateSample : [HKSample]?

var currentHeartLastSample : HKSample?

var currentHeartRateBPM = Double()


//Get Heart Rate from Health Kit

func getCurrentHeartRateData(){

    let calendar = Calendar.current
    let components = calendar.dateComponents([.year, .month, .day], from: Date())
    let startDate : Date = calendar.date(from: components)!
    let endDate : Date = calendar.date(byAdding: Calendar.Component.day, value: 1, to: startDate as Date)!

    let sampleType : HKSampleType =  HKObjectType.quantityType(forIdentifier: HKQuantityTypeIdentifier.heartRate)!
    let predicate : NSPredicate =  HKQuery.predicateForSamples(withStart: startDate, end: endDate, options: [])
    let anchor: HKQueryAnchor = HKQueryAnchor(fromValue: 0)

    let anchoredQuery = HKAnchoredObjectQuery(type: sampleType, predicate: predicate, anchor: anchor, limit: HKObjectQueryNoLimit) { (query, samples, deletedObjects, anchor, error ) in

        if samples != nil {

            self.collectCurrentHeartRateSample(currentSampleTyple: samples!, deleted: deletedObjects!)

        }

    }

    anchoredQuery.updateHandler = { (query, samples, deletedObjects, anchor, error) -> Void in
        self.collectCurrentHeartRateSample(currentSampleTyple: samples!, deleted: deletedObjects!)
    }

    self.healthStore.execute(anchoredQuery)

}


//Retrived necessary parameter from HK Sample
func collectCurrentHeartRateSample(currentSampleTyple : [HKSample]?, deleted : [HKDeletedObject]?){

        self.currentHeartRateSample = currentSampleTyple

        //Get Last Sample of Heart Rate
        self.currentHeartLastSample = self.currentHeartRateSample?.last

        if self.currentHeartLastSample != nil {

            let lastHeartRateSample = self.currentHeartLastSample as! HKQuantitySample

            self.currentHeartRateBPM = lastHeartRateSample.quantity.doubleValue(for: HKUnit(from: "count/min"))
            let heartRateStartDate = lastHeartRateSample.startDate
            let heartRateEndDate = lastHeartRateSample.endDate

            //Send Heart Rate Data Using Send Messge

            DispatchQueue.main.async {

                let message = [
                    "HeartRateBPM" : "\(self.currentHeartRateBPM)",
                    "HeartRateStartDate" : "\(heartRateStartDate)",
                    "HeartRateEndDate" : "\(heartRateEndDate)"
                ]

//Transfer data from watch to iPhone
                self.defaultSession.sendMessage(message, replyHandler:nil, errorHandler: { (error) in
                    print("Error in send message : \(error)")
                })

            }

        }


}