Clean Bill of HealthKit

An overview of HealthKit delivered at 360|iDev Min in Greenville, SC on October 7, 2014

Transcript

1. Clean bill of HealthKit
   Making the most of health data
   Josh Johnson | Two Toasters | @jnjosh
   

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2. “I’m not a
   doctor. I don’t
   even play one
   on TV.”
   — Me, just now.
   

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3. “What is this, the Dark
   Ages?”
   — Doctor Leonard “Bones” McCoy
   

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4. “Hello Computer”
   — Scotty
   

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8. “So, What is is
   this HealthKit
   thing?”
   — You, hopefully.
   

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10. The HealthKit Crash Course™
    

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11. WWDC 2014 Session 203:
    Introducing HealthKit
    https://developer.apple.com/videos/wwdc/2014/?id=203
    

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12. HKHealthStore
    self.healthStore = [[HKHealthStore alloc] init];
    

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13. HKHealthStore
    // …
    [self.healthStore requestAuthorizationToShareTypes:writeTypes
    readTypes:readTypes
    completion:^(BOOL success, NSError *error) {
    // Do something!
    }];
    

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14. HKObjectType
    HKQuantityType *stepType = [HKObjectType
    quantityTypeForIdentifier:HKQuantityTypeIdentifierStepCount];
    NSSet *writeTypes = [NSSet setWithObject:stepType];
    NSSet *readTypes = [NSSet setWithObject:stepType];
    

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15. HKObjectType
    HKQuantityType *stepType = [HKObjectType
    quantityTypeForIdentifier:HKQuantityTypeIdentifierStepCount];
    NSSet *writeTypes = [NSSet setWithObject:stepType];
    NSSet *readTypes = [NSSet setWithObject:stepType];
    [self.healthStore requestAuthorizationToShareTypes:writeTypes
    readTypes:readTypes
    completion:^(BOOL success, NSError *error) {
    // Do something!
    }];
    

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18. HKHealthStore
    [self.healthStore whatElseCanYouDo];
    

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19. HKHealthStore — Saving
    HKQuantityType *stepQuantityType = [HKQuantityType
    quantityTypeForIdentifier:HKQuantityTypeIdentifierStepCount];
    // …
    

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20. HKUnit
    HKQuantityType *stepQuantityType = [HKQuantityType
    quantityTypeForIdentifier:HKQuantityTypeIdentifierStepCount];
    HKQuantity *stepQuantity = [HKQuantity quantityWithUnit:[HKUnit countUnit]
    doubleValue:stepCount];
    // …
    

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21. HKQuantitySample
    HKQuantityType *stepQuantityType = [HKQuantityType
    quantityTypeForIdentifier:HKQuantityTypeIdentifierStepCount];
    HKQuantity *stepQuantity = [HKQuantity quantityWithUnit:[HKUnit countUnit]
    doubleValue:stepCount];
    HKQuantitySample *stepSample = [HKQuantitySample quantitySampleWithType:stepQuantityType
    quantity:stepQuantity
    startDate:someStartDate
    endDate:someEndDate];
    

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22. HKHealthStore — Saving
    // …
    [self.healthStore saveObject:stepSample withCompletion:^(BOOL success, NSError *error) {
    // You better check that error.
    }];
    

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24. HKHealthStore — Querying
    

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25. HKHealthStore — Querying
    HKQuantityType *stepQuantityType = [HKQuantityType
    quantityTypeForIdentifier:HKQuantityTypeIdentifierStepCount];
    //…
    

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26. HKHealthStore — Querying
    HKQuantityType *stepQuantityType = [HKQuantityType
    quantityTypeForIdentifier:HKQuantityTypeIdentifierStepCount];
    NSPredicate *appPredicate = [HKSampleQuery
    predicateForObjectsFromSource:[HKSource defaultSource]];
    //…
    

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27. HKHealthStore — Querying
    HKQuantityType *stepQuantityType = [HKQuantityType
    quantityTypeForIdentifier:HKQuantityTypeIdentifierStepCount];
    NSPredicate *appPredicate = [HKSampleQuery
    predicateForObjectsFromSource:[HKSource defaultSource]];
    HKSampleQuery *stepQuery = [[HKSampleQuery alloc] initWithSampleType:stepQuantityType
    predicate:appPredicate
    limit:HKObjectQueryNoLimit
    sortDescriptors:nil
    resultsHandler:^(HKSampleQuery *query, NSArray *results, NSError *error) {
    // results will be delivered as HKSamples. In this case, HKQuantitySamples.
    // You should also handle that Error!
    }];
    //…
    

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28. HKHealthStore — Querying
    //… stepQuery created
    [self.healthStore executeQuery:stepQuery];
    

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30. “Let’s build something
    cool instead.”
    — All of us, just now.
    

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33. Demo
    

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34. With great power
    comes great
    responsibility.
    

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36. Thank you!
    Questions?
    Josh Johnson | Two Toasters | @jnjosh
    

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