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);
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
FoodItems = NSArray.FromObjects(new object[] {
FoodItem.Create("Wheat Bagel", 240000.0),
FoodItem.Create("Bran with Raisins", 190000.0),
FoodItem.Create("Regular Instant Coffee", 1000.0),
FoodItem.Create("Banana", 439320.0),
FoodItem.Create("Cranberry Bagel", 416000.0),
FoodItem.Create("Oatmeal", 150000.0),
FoodItem.Create("Fruits Salad", 60000.0),
FoodItem.Create("Fried Sea Bass", 200000.0),
FoodItem.Create("Chips", 190000.0),
FoodItem.Create("Chicken Taco", 170000.0)
});
}