public void SaveWorkout() { // Obtain the `HKObjectType` for active energy burned. var activeEnergyType = HKQuantityType.Create(HKQuantityTypeIdentifier.ActiveEnergyBurned); if (activeEnergyType == null) { return; } var beginDate = WorkoutBeginDate; var endDate = WorkoutEndDate; var timeDifference = endDate.Subtract(beginDate); double duration = timeDifference.TotalSeconds; NSDictionary metadata = null; var workout = HKWorkout.Create(HKWorkoutActivityType.Walking, (NSDate)beginDate, (NSDate)endDate, duration, CurrentActiveEnergyQuantity, HKQuantity.FromQuantity(HKUnit.Mile, 0.0), metadata); var finalActiveEnergySamples = ActiveEnergySamples; if (HealthStore.GetAuthorizationStatus(activeEnergyType) != HKAuthorizationStatus.SharingAuthorized || HealthStore.GetAuthorizationStatus(HKObjectType.GetWorkoutType()) != HKAuthorizationStatus.SharingAuthorized) { return; } HealthStore.SaveObject(workout, (success, error) => { if (!success) { Console.WriteLine($"An error occured saving the workout. In your app, try to handle this gracefully. The error was: {error}."); return; } if (finalActiveEnergySamples.Count > 0) { HealthStore.AddSamples(finalActiveEnergySamples.ToArray(), workout, (addSuccess, addError) => { // Handle any errors if (addError != null) { Console.WriteLine($"An error occurred adding the samples. In your app, try to handle this gracefully. The error was: {error.ToString()}."); } }); } }); }