void UpdateJournal(object sender, EventArgs args) { var calendar = NSCalendar.CurrentCalendar; var startDate = DateTime.Now.Date; var endDate = startDate.AddDays(1); var sampleType = HKSampleType.GetQuantityType(HKQuantityTypeIdentifierKey.DietaryEnergyConsumed); var predicate = HKQuery.GetPredicateForSamples((NSDate)startDate, (NSDate)endDate, HKQueryOptions.None); var query = new HKSampleQuery(sampleType, predicate, 0, new NSSortDescriptor[0], (resultQuery, results, error) => { if (error != null) { Console.WriteLine("An error occured fetching the user's tracked food. " + "In your app, try to handle this gracefully. The error was: {0}.", error.LocalizedDescription); return; } InvokeOnMainThread(() => { FoodItems.RemoveAllObjects(); foreach (HKQuantitySample sample in results) { var foodName = (NSString)sample.Metadata.Dictionary [HKMetadataKey.FoodType]; double joules = sample.Quantity.GetDoubleValue(HKUnit.Joule); var foodItem = FoodItem.Create(foodName, joules); FoodItems.Add(foodItem); } TableView.ReloadData(); }); }); HealthStore.ExecuteQuery(query); }
protected override Task <IEnumerable <T> > Query <T>(HealthDataType healthDataType, AggregateTime aggregateTime, DateTime startDate, DateTime endDate) { if (_healthStore == null || !HKHealthStore.IsHealthDataAvailable) { throw new NotSupportedException("HealthKit data is not available on this device"); } var authorized = IsAuthorizedToRead(healthDataType); if (!authorized) { throw new UnauthorizedAccessException($"Not enough permissions to request {healthDataType}"); } var taskComplSrc = new TaskCompletionSource <IEnumerable <T> >(); var healthKitType = healthDataType.ToHealthKit(); var quantityType = HKQuantityType.Create(healthKitType.QuantityTypeIdentifier); var predicate = HKQuery.GetPredicateForSamples((NSDate)startDate, (NSDate)endDate, HKQueryOptions.StrictStartDate); if (aggregateTime != AggregateTime.None) { var anchor = NSCalendar.CurrentCalendar.DateBySettingsHour(0, 0, 0, NSDate.Now, NSCalendarOptions.None); var interval = new NSDateComponents(); switch (aggregateTime) { case AggregateTime.Year: interval.Year = 1; break; case AggregateTime.Month: interval.Month = 1; break; case AggregateTime.Week: interval.Week = 1; break; case AggregateTime.Day: interval.Day = 1; break; case AggregateTime.Hour: interval.Hour = 1; break; } HKStatisticsOptions hkStatisticsOptions; if (healthKitType.Cumulative) { hkStatisticsOptions = HKStatisticsOptions.CumulativeSum; } else { hkStatisticsOptions = HKStatisticsOptions.DiscreteAverage | HKStatisticsOptions.DiscreteMax | HKStatisticsOptions.DiscreteMax; } var queryAggregate = new HKStatisticsCollectionQuery(quantityType, predicate, hkStatisticsOptions, anchor, interval) { InitialResultsHandler = (collectionQuery, results, error) => { var healthData = new List <T>(); foreach (var result in results.Statistics) { var hData = new AggregatedHealthData { StartDate = (DateTime)result.StartDate, EndDate = (DateTime)result.EndDate, }; if (healthKitType.Cumulative) { hData.Sum = result.SumQuantity().GetDoubleValue(healthKitType.Unit); } else { hData.Min = result.MinimumQuantity().GetDoubleValue(healthKitType.Unit); hData.Max = result.MaximumQuantity().GetDoubleValue(healthKitType.Unit); hData.Average = result.AverageQuantity().GetDoubleValue(healthKitType.Unit); } healthData.Add(hData as T); } taskComplSrc.SetResult(healthData); } }; _healthStore.ExecuteQuery(queryAggregate); } else { var sortDescriptor = new[] { new NSSortDescriptor(HKSample.SortIdentifierEndDate, true) }; HKSampleType sampleType; if (healthKitType.HKType == HealthKitData.HKTypes.Category) { sampleType = HKCategoryType.Create(healthKitType.CategoryTypeIdentifier); } else if (healthKitType.HKType == HealthKitData.HKTypes.Quantity) { sampleType = HKQuantityType.Create(healthKitType.QuantityTypeIdentifier); } else if (healthKitType.HKType == HealthKitData.HKTypes.Workout) { sampleType = HKSampleType.GetWorkoutType(); } else { throw new NotSupportedException(); } var query = new HKSampleQuery(sampleType, predicate, HKSampleQuery.NoLimit, sortDescriptor, (resultQuery, results, error) => { IEnumerable <T> healthData = default(IEnumerable <T>); if (sampleType == HKSampleType.GetWorkoutType()) { healthData = results?.Select(result => new WorkoutData { StartDate = (DateTime)result.StartDate, EndDate = (DateTime)result.EndDate, Duration = (result as HKWorkout).Duration, Device = (result as HKWorkout).Device?.ToString(), WorkoutType = (result as HKWorkout).WorkoutDataType() //TotalDistance = Convert.ToDouble((result as HKWorkout).TotalDistance), //TotalEnergyBurned = Convert.ToDouble((result as HKWorkout).TotalEnergyBurned) } as T); } else { healthData = results?.Select(result => new HealthData { StartDate = (DateTime)result.StartDate, EndDate = (DateTime)result.EndDate, Value = ReadValue(result, healthKitType.Unit), UserEntered = result.Metadata?.WasUserEntered ?? false, } as T); } taskComplSrc.SetResult(healthData); }); _healthStore.ExecuteQuery(query); } return(taskComplSrc.Task); }