I can detect workout started on backgroun with apple watch, but how can I detect workout finished? - swift

Question

I can detect workout started on backgroun with apple watch, with below code
let workoutevent = HKObjectType.workoutType()
if store.authorizationStatus(for: workoutevent) != HKAuthorizationStatus.notDetermined {
store.enableBackgroundDelivery(for: workoutevent, frequency: .immediate, withCompletion: { (worked, error) in
print(worked)
print(error)
print("workoutevent enableBackgroundDelivery")
guard worked else {
self.logger.error("Unable to set up background delivery from HealthKit: \(error!.localizedDescription)")
print("workoutevent unable to set up background ")
fatalError()
}
if error != nil {
print("workoutevent error is ")
print(error)
}
})
backgroundObserver3 =
HKObserverQuery(sampleType: workoutevent,
predicate: nil,
updateHandler: processUpdate3(query:completionHandler3:error:))
if let queryworkout = backgroundObserver3 {
print("Starting workoutevent333 the background observer query.\(queryworkout)")
store.execute(queryworkout)
}
}else{
print("not determined....")
}
whenever I started workout on apple watch, it goes to
processUpdate3
very well,
but what I need to know is to when user finish workout.
how can I detect it ?
func processUpdate3(query: HKObserverQuery,
completionHandler3: #escaping () -> Void,
error: Error?) {
print("come here when work out started ")
...........
}

Answer 1

I don't see it in your code. But somewhere you must have an HKWorkoutSession. My app is set up to track running and I configure the session to begin like so;
let configuration = HKWorkoutConfiguration()
configuration.activityType = .running
do {
// HKWorkoutSession is set up here.
session = try HKWorkoutSession(healthStore: healthStore, configuration: configuration)
workoutBuilder = session.associatedWorkoutBuilder()
} catch {
// handle errors
}
When the users taps the end workout button I call session.end()
Here is a link to the documentation.