public static Task <double> ReadCurrentHeightInMetres(HKHealthStore store)
{
var tcs = new TaskCompletionSource <double>();
var heightType = HKQuantityTypeIdentifierKey.Height;
var heightUnit = HKUnit.Meter;
var sort = new NSSortDescriptor(HKSample.SortIdentifierStartDate, false);
var sampleType = HKObjectType.GetQuantityType(HKQuantityTypeIdentifierKey.Height);
var query = new HKSampleQuery(sampleType, null, 1, new NSSortDescriptor[] { sort },
(q, data, error) =>
{
if (error == null)
{
var amount = (data[0] as HKQuantitySample).Quantity.GetDoubleValue(heightUnit);
tcs.TrySetResult(amount);
}
else
{
tcs.TrySetException(new NSErrorException(error));
}
});
store.ExecuteQuery(query);
return(tcs.Task);
}
public bool RequestPermissions()
{
var stepsKey = HKQuantityTypeIdentifierKey.StepCount;
var stepsQuantityType = HKObjectType.GetQuantityType(stepsKey);
_healthStore.RequestAuthorizationToShare(
new NSSet(),
new NSSet(new[] {
stepsQuantityType
}),
(success, error) =>
{
if (success)
{
StepQuery();
}
else
{
Console.WriteLine(error);
}
}
);
return(true);
}
void UpdateHealthKit(string s)
{
//Creating a heartbeat sample
int result = 0;
if (Int32.TryParse(s, out result))
{
var heartRateId = HKQuantityTypeIdentifierKey.HeartRate;
var heartRateType = HKObjectType.GetQuantityType(heartRateId);
var heartRateQuantityType = HKQuantityType.GetQuantityType(heartRateId);
//Beats per minute = "Count/Minute" as a unit
var heartRateUnitType = HKUnit.Count.UnitDividedBy(HKUnit.Minute);
var quantity = HKQuantity.FromQuantity(heartRateUnitType, result);
//If we know where the sensor is...
var metadata = new HKMetadata();
metadata.HeartRateSensorLocation = HKHeartRateSensorLocation.Chest;
//Create the sample
var heartRateSample = HKQuantitySample.FromType(heartRateQuantityType, quantity, new NSDate(), new NSDate(), metadata);
//Attempt to store it...
healthKitStore.SaveObject(heartRateSample, (success, error) => {
//Error will be non-null if permissions not granted
Console.WriteLine("Write succeeded: " + success);
if (error != null)
{
Console.WriteLine(error);
}
});
}
}
static NSSet HealthTypesToWrite()
{
var quantityTypesToRead = QuantityTypesToRead.Select(q => HKObjectType.GetQuantityType(q));
var allHealthTypesToRead = new List <object>();
allHealthTypesToRead.AddRange(quantityTypesToRead);
return(new NSSet(allHealthTypesToRead.ToArray()));
}
private void ValidateAuthorization()
{
//Request / Validate that the app has permission to store heart-rate data
var heartRateId = HKQuantityTypeIdentifierKey.HeartRate;
var heartRateType = HKObjectType.GetQuantityType(heartRateId);
var typesToWrite = new NSSet(new [] { heartRateType });
//We aren't reading any data for this sample
var typesToRead = new NSSet();
healthKitStore.RequestAuthorizationToShare(
typesToWrite,
typesToRead,
ReactToHealthCarePermissions);
}
public async Task <int> QueryTotalFlights()
{
var flightsCount = HKObjectType.GetQuantityType(HKQuantityTypeIdentifierKey.FlightsClimbed);
var sumOptions = HKStatisticsOptions.CumulativeSum;
int totalRecordetFlights = 0;
var query = new HKStatisticsQuery(flightsCount, new NSPredicate(IntPtr.Zero), sumOptions, (HKStatisticsQuery resultQuery, HKStatistics results, NSError error) => {
if (results != null)
{
var quantitySample = results;
totalRecordetFlights = (int)quantitySample.SumQuantity().GetDoubleValue(HKUnit.Count);
HealthKitDataContext.ActiveHealthKitData.DistanceReadings.TotalFlightsClimed = totalRecordetFlights;
Console.WriteLine(string.Format("totally walked {0} flights", totalRecordetFlights));
}
});
await Task.Factory.StartNew(() => HealthKitStore.ExecuteQuery(query));
return(totalRecordetFlights);
}
public void RemoveStepCountEntry(StepCountEntry entry)
{
//Cast the entry as a HealthKitBloodGlucoseEntry...
HealthKitStepCountEntry hkStepCountEntry = entry as HealthKitStepCountEntry;
HealthStore.DeleteObject(hkStepCountEntry.StepCountSample, new Action <bool, NSError> ((success, error) => {
if (!success || error != null)
{
//NOTE: If this app didn't put the entry into the blood glucose list, then there will be an error on delete.
AlertManager.ShowError("Health Kit", "Unable to delete step count sample: " + error);
}
else
{
//Woo! We properly removed the last entry, make sure that any listeners to the glucose states are properly updated.
RefreshQuantityValue(HKQuantityTypeIdentifierKey.StepCount, HKObjectType.GetQuantityType(HKQuantityTypeIdentifierKey.StepCount));
}
}));
}
public async Task <string> QueryTotalStepsRecordingLastRecordingDate()
{
var stepsCount = HKObjectType.GetQuantityType(HKQuantityTypeIdentifierKey.StepCount);
var sumOptions = HKStatisticsOptions.CumulativeSum;
string resultString = string.Empty;
var query = new HKStatisticsQuery(stepsCount, new NSPredicate(IntPtr.Zero), sumOptions, (HKStatisticsQuery resultQuery, HKStatistics results, NSError error) => {
if (results != null)
{
var quantitySample = results;
var quantity = quantitySample.EndDate;
// resultString = quantity.ToString();
HealthKitDataContext.ActiveHealthKitData.DistanceReadings.RecordingStoped = quantity.ToString();
Console.WriteLine(string.Format("Last recording of steps: {0} ", quantity.ToString()));
}
});
await Task.Factory.StartNew(() => HealthKitStore.ExecuteQuery(query));
return(resultString);
}
public async Task <double> QueryTotalLengthWalked()
{
var stepsCount = HKObjectType.GetQuantityType(HKQuantityTypeIdentifierKey.DistanceWalkingRunning);
var sumOptions = HKStatisticsOptions.CumulativeSum;
double totalLengthWalked = 0;
var query = new HKStatisticsQuery(stepsCount, new NSPredicate(IntPtr.Zero), sumOptions, (HKStatisticsQuery resultQuery, HKStatistics results, NSError error) => {
if (results != null)
{
var quantitySample = results;
totalLengthWalked = quantitySample.SumQuantity().GetDoubleValue(HKUnit.Meter);
HealthKitDataContext.ActiveHealthKitData.DistanceReadings.TotalDistance = totalLengthWalked;
Console.WriteLine(string.Format("totally walked {0}", totalLengthWalked));
}
});
await Task.Factory.StartNew(() => HealthKitStore.ExecuteQuery(query));
return(totalLengthWalked);
}
//Note that this will be called on a background thread
void ReactToHealthCarePermissions(bool success, NSError error)
{
/*
* The success and error arguments specify whether the user interacted
* with the permissions dialog. This sample doesn't use that information.
*/
//Instead, the important thing is to confirm that we can write heart-rate data
var access = healthKitStore.GetAuthorizationStatus(HKObjectType.GetQuantityType(HKQuantityTypeIdentifierKey.HeartRate));
if (access.HasFlag(HKAuthorizationStatus.SharingAuthorized))
{
HeartRateModel.Instance.Enabled = true;
}
else
{
HeartRateModel.Instance.Enabled = false;
}
}
public int StepQuery()
{
var dateComponents = new NSDateComponents();
dateComponents.Day = -1;
var cal = new NSCalendar(NSCalendarType.ISO8601);
var yesterday = cal.DateFromComponents(dateComponents);
var predicate = HKQuery.GetPredicateForSamples(yesterday, new NSDate(), HKQueryOptions.None);
var query = new HKSampleQuery(HKObjectType.GetQuantityType(HKQuantityTypeIdentifierKey.StepCount),
predicate,
0,
null,
new HKSampleQueryResultsHandler((retQuery, results, error) => {
Console.WriteLine(results.Length);
}));
_healthStore.ExecuteQuery(query);
return(0);
}
public void AddStepCountEntry(StepCountEntry entry)
{
var date = new NSDate();
var quantityType = HKObjectType.GetQuantityType(HKQuantityTypeIdentifierKey.StepCount);
var countUnit = HKUnit.Count;
var quantity = HKQuantity.FromQuantity(countUnit, entry.Count);
var sample = HKQuantitySample.FromType(quantityType, quantity, date, date);
HealthStore.SaveObject(sample, new Action <bool, NSError>((success, error) => {
if (!success || error != null)
{
//There may have been an add error for some reason.
AlertManager.ShowError("Health Kit", "Unable to add step count sample: " + error);
}
else
{
//Refresh all app wide blood glucose UI fields.
RefreshQuantityValue(HKQuantityTypeIdentifierKey.StepCount, quantityType);
}
}));
}
/// <summary>
/// This method handles all the HealthKit gymnastics to add a blood glucose entry to the HealthKit data.
/// </summary>
/// <param name="entry">Entry.</param>
public void AddBloodGlucoseEntry(BloodGlucoseEntry entry)
{
var date = new NSDate();
var quantityType = HKObjectType.GetQuantityType(HKQuantityTypeIdentifierKey.BloodGlucose);
var mgPerDL = HKUnit.FromString("mg/dL");
var quantity = HKQuantity.FromQuantity(mgPerDL, entry.BloodGlucoseValue);
var sample = HKQuantitySample.FromType(quantityType, quantity, date, date);
HealthStore.SaveObject(sample, new Action <bool, NSError>((success, error) => {
if (!success || error != null)
{
//There may have been an add error for some reason.
AlertManager.ShowError("Health Kit", "Unable to add glucose sample: " + error);
}
else
{
//Refresh all app wide blood glucose UI fields.
RefreshQuantityValue(HKQuantityTypeIdentifierKey.BloodGlucose, quantityType);
}
}));
}
public void SetUpPermissions()
{
var distanceQuantityType = HKObjectType.GetQuantityType(HKQuantityTypeIdentifierKey.DistanceWalkingRunning);
var stepsQuantityType = HKObjectType.GetQuantityType(HKQuantityTypeIdentifierKey.StepCount);
var flightsQuantityType = HKObjectType.GetQuantityType(HKQuantityTypeIdentifierKey.FlightsClimbed);
var heightQuantityType = HKObjectType.GetQuantityType(HKQuantityTypeIdentifierKey.Height);
var heartRateQuantityType = HKObjectType.GetQuantityType(HKQuantityTypeIdentifierKey.HeartRate);
var nikeFuelQuantityType = HKObjectType.GetQuantityType(HKQuantityTypeIdentifierKey.NikeFuel);
var dateOfBirthCharacteristicType = HKObjectType.GetCharacteristicType(HKCharacteristicTypeIdentifierKey.DateOfBirth);
var sexCharacteristicType = HKObjectType.GetCharacteristicType(HKCharacteristicTypeIdentifierKey.BiologicalSex);
var bloodTypeCharacteristicType = HKObjectType.GetCharacteristicType(HKCharacteristicTypeIdentifierKey.BloodType);
if (m_healthKitStore == null)
{
HealthKitStore = new HKHealthStore();
m_healthKitStore.RequestAuthorizationToShare(new NSSet(new [] { distanceQuantityType, stepsQuantityType, flightsQuantityType, heartRateQuantityType }), new NSSet(new [] { (NSObject)distanceQuantityType, (NSObject)stepsQuantityType, (NSObject)flightsQuantityType, (NSObject)heightQuantityType, (NSObject)dateOfBirthCharacteristicType, (NSObject)sexCharacteristicType, (NSObject)bloodTypeCharacteristicType, (NSObject)nikeFuelQuantityType, (NSObject)bloodTypeCharacteristicType, (NSObject)heartRateQuantityType }), (success, error) => {
Console.WriteLine("Authorized:" + success);
if (error != null)
{
Console.WriteLine("Authorization error: " + error);
}
});
}
}
public void Refresh()
{
var quantityTypesToRead = QuantityTypesToRead.Select(q => new { Key = q, QuantityType = HKObjectType.GetQuantityType(q) });
foreach (var quantityTypeToRead in quantityTypesToRead)
{
RefreshQuantityValue(quantityTypeToRead.Key, quantityTypeToRead.QuantityType);
}
var characteristicTypesToRead = CharacteristicTypesToRead.Select(c => new { Key = c, CharacteristicType = HKObjectType.GetCharacteristicType(c) });
foreach (var characteristicTypeToRead in characteristicTypesToRead)
{
RefreshCharacteristicValue(characteristicTypeToRead.Key, characteristicTypeToRead.CharacteristicType);
}
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
#region UI controls
statusLabel = new UILabel(new RectangleF(10, 30, 300, 30));
statusLabel.Text = "waiting...";
heartRateLabel = new UILabel(new RectangleF(10, 70, 150, 30));
heartRateLabel.Font = UIFont.BoldSystemFontOfSize(36);
heartRateLabel.TextColor = UIColor.Red;
heartRateUnitLabel = new UILabel(new RectangleF(160, 70, 150, 30));
deviceNameLabel = new UILabel(new RectangleF(10, 120, 300, 30));
connectButton = UIButton.FromType(UIButtonType.System);
connectButton.SetTitle("Connect", UIControlState.Normal);
connectButton.SetTitle("searching...", UIControlState.Disabled);
connectButton.Enabled = false;
connectButton.Frame = new RectangleF(10, 160, 300, 30);
connectButton.TouchUpInside += ConnectToSelectedDevice;
permissionsLabel = new UILabel(new RectangleF(10, 200, 300, 60));
storeData = UIButton.FromType(UIButtonType.System);
storeData.Frame = new RectangleF(10, 250, 300, 30);
storeData.SetTitle("requires permission", UIControlState.Disabled);
storeData.SetTitle("Store in HealthKit", UIControlState.Normal);
storeData.Enabled = false;
storeData.TouchUpInside += (sender, e) => {
UpdateHealthKit(heartRateLabel.Text); // pretty hacky :)
};
Add(statusLabel);
Add(heartRateLabel);
Add(heartRateUnitLabel);
Add(deviceNameLabel);
Add(connectButton);
Add(permissionsLabel);
Add(storeData);
#endregion
InitializeCoreBluetooth();
#region HealthKit
// https://gist.github.com/lobrien/1217d3cff7b29716c0d3
// http://www.knowing.net/index.php/2014/07/11/exploring-healthkit-with-xamarin-provisioning-and-permissions-illustrated-walkthrough/
healthKitStore = new HKHealthStore();
//Permissions
//Request HealthKit authorization
var heartRateId = HKQuantityTypeIdentifierKey.HeartRate;
var heartRateType = HKObjectType.GetQuantityType(heartRateId);
//Request to write heart rate, read nothing...
healthKitStore.RequestAuthorizationToShare(new NSSet(new [] { heartRateType }), new NSSet(), (success, error) =>
InvokeOnMainThread(() => {
if (success)
{
//Whatever...
Console.WriteLine("RequestAuthorizationToShare: success");
permissionsLabel.Text = "HealthKit access is enabled!";
storeData.Enabled = true;
}
else
{
//Whatever...
Console.WriteLine("RequestAuthorizationToShare: failed");
permissionsLabel.Text = "No permission to access HealthKit :-(";
storeData.Enabled = false;
}
if (error != null)
{
Console.WriteLine("HealthKit authorization error: " + error);
}
}));
#endregion
}
