How to get cycling duration from HealthKit for ios app using Swift - ios

Question

I am creating an app where I am reading data from health-Kit. I am able to read number of steps, Running + Walking etc. now i am trying to read the date and duration of cycling. This is what I was using for Running + Walking
func readDistanceWalkingRunning(completion: (([AnyObject]!, NSError!) -> Void)!) {
let runningWalking = HKQuantityType.quantityTypeForIdentifier(HKQuantityTypeIdentifierDistanceWalkingRunning)
let predicate = HKQuery.predicateForSamplesWithStartDate(NSDate().dateByAddingTimeInterval(-86400.0), endDate: NSDate(), options: HKQueryOptions.None)
let stepsSampleQuery = HKSampleQuery(sampleType: runningWalking!,
predicate: predicate,
limit: 100,
sortDescriptors: nil)
{ [weak self] (query, results, error) in
if let results = results as? [HKQuantitySample] {
for result in results {
print(" Distance was " + " \(result.quantity.doubleValueForUnit(HKUnit.mileUnit())) ")
print("Date was " + "\(result.startDate)")
}
}
}
// Don't forget to execute the Query!
executeQuery(stepsSampleQuery)
}
And everything is fine, But when I try to read distance for cycling using the code below, I am getting nil result. Cycling data is showing in appleHealth app but Why am I getting result as nil ? Please help
func readDistanceCycling(completion: (([AnyObject]!, NSError!) -> Void)!) {
let distanceCycling = HKQuantityType.quantityTypeForIdentifier(HKQuantityTypeIdentifierDistanceCycling)
let predicate = HKQuery.predicateForSamplesWithStartDate(NSDate(), endDate: NSDate(), options: HKQueryOptions.None)
let query = HKSampleQuery(sampleType: distanceCycling!, predicate: predicate, limit: 100, sortDescriptors: nil, resultsHandler: { query, result, error in
if result != nil
{
print("We have some Data")
}
else
{
print("Result is nil")
}
if let results = result as? [HKQuantitySample] {
for result in results {
print(" Quantity type " + " \(result.quantityType) ")
print("Date was " + "\(result.startDate)")
}
}
})
executeQuery(query)
}
}

Answer 1

Use given below function. It give you leatest 7 record. According to your requirement you can also change it.
func getHealthDataValue ( HealthQuantityType : HKQuantityType , strUnitType : String , GetBackFinalhealthData: ((( healthValues : [AnyObject] ) -> Void)!) )
{
if let heartRateType = HKQuantityType.quantityTypeForIdentifier(HealthQuantityType.identifier)
{
if (HKHealthStore.isHealthDataAvailable() ){
let sortByTime = NSSortDescriptor(key:HKSampleSortIdentifierEndDate, ascending:false)
// let timeFormatter = NSDateFormatter()
// timeFormatter.dateFormat = "hh:mm:ss"
//yyyy-MM-dd'T'HH:mm:ss.SSSZZZZ
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss"
let query = HKSampleQuery(sampleType:heartRateType, predicate:nil, limit:7, sortDescriptors:[sortByTime], resultsHandler:{(query, results, error) in
guard let results = results else {
//include the healthkit error in log
if let errorDescription = error!.description as String?
{
GetBackFinalhealthData (healthValues: ["nodata"])
}
return
}
var arrHealthValues = [AnyObject]()
for quantitySample in results {
let quantity = (quantitySample as! HKQuantitySample).quantity
let healthDataUnit : HKUnit
if (strUnitType.length > 0 ){
healthDataUnit = HKUnit(fromString: strUnitType)
}else{
healthDataUnit = HKUnit.countUnit()
}
let tempActualhealthData = "\(quantity.doubleValueForUnit(healthDataUnit))"
let tempActualRecordedDate = "\(dateFormatter.stringFromDate(quantitySample.startDate))"
if (tempActualhealthData.length > 0){
let dicHealth : [String:AnyObject] = [HealthValue.kIdentifierValue :tempActualhealthData , HealthValue.kRecordDate :tempActualRecordedDate , HealthValue.kIdentifierDisplayUnit : strUnitType ]
arrHealthValues.append(dicHealth)
}
}
if (arrHealthValues.count > 0)
{
GetBackFinalhealthData (healthValues: arrHealthValues)
}
else
{
GetBackFinalhealthData (healthValues: [HealthValue.kNoData])
}
})
(self.HealthStore as! HKHealthStore).executeQuery(query)
}
}
}
Use above function as follow.
Here you need to pass a type and unit.
self.getHealthDataValue(HKObjectType.quantityTypeForIdentifier(HKQuantityTypeIdentifierBloodPressureDiastolic), strUnitType: "mmHg"
) { (arrHealth) -> Void in
}