HKWorkoutSession is not running consistently - ios

Question

in watchOS, i am just trying to get HR value in real-time while a workoutSession is running.
func startHeartRateQuery(updateHandler: #escaping ([HKQuantitySample]?) -> Void) {
guard let quantityType = HKObjectType.quantityType(forIdentifier: .heartRate) else {
return
}
let heartRateQuery = HKAnchoredObjectQuery(type: quantityType, predicate: nil, anchor: anchor, limit: Int(HKObjectQueryNoLimit)) { (query, sampleObjects, deletedObjects, newAnchor, error) -> Void in
guard let newAnchor = newAnchor else {return}
self.anchor = newAnchor
updateHandler(sampleObjects as? [HKQuantitySample])
}
heartRateQuery.updateHandler = {(query, samples, deleteObjects, newAnchor, error) -> Void in
self.anchor = newAnchor!
updateHandler(samples as? [HKQuantitySample])
}
healthStore.execute(heartRateQuery)
activeDataQueries.append(heartRateQuery)
}
And This is how i do start workoutSession.
func session(_ session: WCSession, didReceiveUserInfo userInfo: [String : Any] = [:]) {
guard let d = delegate else {
return
}
if let u = userInfo["status"] as? String {
d.receivedWorkoutRunningStatus(u)
}
if let c = userInfo["clock"] as? String {
d.receiveWorkoutRestPeriodClock(c)
}
}
You can find receivedWorkoutRunningStatus function on InterfaceController.
This is InterfaceController.swift which is first screen on Watch App.
class InterfaceController: WKInterfaceController, HKWorkoutSessionDelegate {
#IBOutlet var lblHeartRate: WKInterfaceLabel!
#IBOutlet var lblSplitIntervalNumber: WKInterfaceLabel!
#IBOutlet var lblRestPeriodClock: WKInterfaceLabel!
private let healthStoreManager = WatchHealthKitManager()
private let parentConnector = ParentConnector()
private var workoutSession: HKWorkoutSession!
override func awake(withContext context: Any?) {
super.awake(withContext: context)
// Create a workout session with the workout configuration
do {
let workoutConfiguration = HKWorkoutConfiguration()
workoutConfiguration.locationType = .indoor
workoutConfiguration.activityType = .rowing
workoutSession = try HKWorkoutSession(configuration: workoutConfiguration)
} catch {
fatalError(error.localizedDescription)
}
//// initial setup
parentConnector.activate()
parentConnector.delegate = self
workoutSession.delegate = self
}
// MARK: - Data Accumulation
private func startAccumulatingData() {
healthStoreManager.startHeartRateQuery() { quantitySamples in
DispatchQueue.main.async {
guard !self.isPaused() else {
return
}
guard let heartRateSamples = quantitySamples else {
return
}
let hrUnit = HKUnit(from: "count/min")
guard let sample = heartRateSamples.first else {
return
}
let value = sample.quantity.doubleValue(for: hrUnit)
self.updateHeartRate(value: value)
self.parentConnector.transfer(value: value)
}
}
}
func workoutSession(_ workoutSession: HKWorkoutSession,
didChangeTo toState: HKWorkoutSessionState,
from fromState: HKWorkoutSessionState,
date: Date) {
switch (toState) {
case .running:
startAccumulatingData()
case .ended:
stopAccumulatingData()
default:
print("Error")
}
}
func receivedWorkoutRunningStatus(_ status: String) {
if (status == "Start") {
healthStoreManager.start(workoutSession)
} else if (status == "Finish") {
healthStoreManager.end(workoutSession)
lblHeartRate.setText("No Active Workout")
}
DispatchQueue.main.async {
self.lblSplitIntervalNumber.setText(status)
}
}
On the iPhone App, I send a "Start" string using transferUserInfo function to trigger the workoutSession beginning. This is not working properly, it only sometimes works, it is very inconsistent.
I would appreciate if you have any advice or alternative approaches.
Thank you in advance.