Simple HealthKit wrapper library

1. INTRODUCING CARDIOMERCARI INC.
@KITASUKE

2. ABOUT ME

3. MY FUTURE TALKS
> Search APIs and Universal Links in practice
@iOS9 bootcamp
> Introducing new features for watchOS 2
@MOSA software meeting

4. HEALTHKIT
HealthKit allows apps that provide health
and fitness services
— HealthKit Framework Reference

5. CLASSES
> HKDevice
> HKSample
> HKObjectType
> HKQuantity
> HKUnit
> HKQuery

6. HKQUERY
> HKSampleQuery
> HKObserverQuery
> HKAnchoredObjectQuery
> HKStatisticsQuery
> HKStatisticsCollectionQuery
> HKCorrelation
> HKSourceQuery

7. HEART RATE IN WATCHOS-2-SAMPLER
class HeartRateInterfaceController: WKInterfaceController {
let healthStore = HKHealthStore()
let heartRateType = HKQuantityType.quantityTypeForIdentifier(HKQuantityTypeIdentifierHeartRate)!
let heartRateUnit = HKUnit(fromString: "count/min")
var heartRateQuery: HKQuery?
override func willActivate() {
super.willActivate()
guard HKHealthStore.isHealthDataAvailable() else { return }
let dataTypes = Set([heartRateType])
healthStore.requestAuthorizationToShareTypes(nil, readTypes: dataTypes) { (success, error) -> Void in
guard success else { return }
}
}
@IBAction func fetchBtnTapped() {
guard self.heartRateQuery == nil else { return }
if self.heartRateQuery == nil {
self.heartRateQuery = self.createStreamingQuery()
self.healthStore.executeQuery(self.heartRateQuery!)
} else {
self.healthStore.stopQuery(self.heartRateQuery!)
self.heartRateQuery = nil
}
}
private func createStreamingQuery() -> HKQuery {
let predicate = HKQuery.predicateForSamplesWithStartDate(NSDate(), endDate: nil, options: .None)
let query = HKAnchoredObjectQuery(type: heartRateType, predicate: predicate, anchor: nil, limit: Int(HKObjectQueryNoLimit)) { (query, samples, deletedObjects, anchor, error) -> Void in
self.addSamples(samples)
}
query.updateHandler = { (query, samples, deletedObjects, anchor, error) -> Void in
self.addSamples(samples)
}
return query
}
private func addSamples(samples: [HKSample]?) {
guard let samples = samples as? [HKQuantitySample] else { return }
guard let quantity = samples.last?.quantity else { return }
let heartRate = quantity.doubleValueForUnit(heartRateUnit)
}
}

8. !

9. CARDIO!HTTPS://GITHUB.COM/KITASUKE/CARDIO

10. HEALTHKIT WRAPPER
SPECIALIZED FOR
WORKOUT

11. FEATURES
> Super simple to access HealthKit
> Cuztomizable preferences
> Well-designed for workout app
> Easy way to save workout data in HealthKit

12. REQUIREMENTS
> watchOS 2.0+
> Swift 2.0+

13. INSTALLATION
Carthage
github "kitasuke/Cardio"
Add HealthKit entitlements into both containing
iOS app target and WatchKit Extension target

14. CONTEXT PROTOCOL
public protocol Context {
var activityType: HKWorkoutActivityType { get }
var locationType: HKWorkoutSessionLocationType { get }
var distanceUnit: HKUnit { get }
var activeEnergyUnit: HKUnit { get }
var heartRateUnit: HKUnit { get }
var distanceType: HKQuantityType { get }
var activeEnergyType: HKQuantityType { get }
var heartRateType: HKQuantityType { get }
var shareIdentifiers: [String] { get }
var readIdentifiers: [String] { get }
}

15. CONTEXT EXTENSION
public extension Context {
public var activityType: HKWorkoutActivityType {
return .Running
}
public var locationType: HKWorkoutSessionLocationType {
return .Outdoor
}
public var distanceUnit: HKUnit {
return HKUnit.meterUnitWithMetricPrefix(.Kilo)
}
public var activeEnergyUnit: HKUnit {
return HKUnit.kilocalorieUnit()
}
public var heartRateUnit: HKUnit {
return HKUnit(fromString: "count/min")
}
...
}

16. STRUCT CONFORMED CONTEXT
struct CardioContext: Context {
var locationType: HKWorkoutSessionLocationType {
return .Indoor
}
var distanceUnit: HKUnit {
return HKUnit.mileUnit()
}
var shareIdentifiers: [String] {
return []
}
}

17. INITIALIZATION
let context = CardioContext()
cardio = Cardio(context: context)

18. AUTHORIZATION
WATCHKIT EXTENSION TARGET
cardio.authorize { result in
}
CONTAINING IOS APP TARGET
func applicationShouldRequestHealthAuthorization(application: UIApplication) {
authorize()
}

19. UPDATE HANDLERS
cardio.distanceHandler = { distance, total in
}
cardio.activeEnergyHandler = { activeEnergy, total in
}
cardio.heartRateHandler = { heartRate, average in
}

20. WORKOUT SESSION
cardio.start { result in
}
cardio.end { result in
}

21. SAVE WORKOUT DATA
cardio.save() { result in
}

24. FUTURE WORK
> Add more features
> Fully support HealthKit
> Make wrapper for iOS app target

25. WELCOME YOUR
FEEDBACK &
THOUGHTS !

26. ANY QUESTIONS?