iOS HealthKit how to save Heart Rate (bpm) values? Swift

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终归单人心
终归单人心 2021-02-13 21:49

How to use : HKUnit

Sample type Unit type Unit name Unit string Heart Rate count/time Beats per Minute \"count/min”

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  • 2021-02-13 22:00

    In ObjectiveC (for those not using Swift, expanded for easy reading):

    #define nilable __nullable
    #define kCountPerMinUnitStr @"count/min"
    
    typedef void (^VoidBoolErrorBlock) (BOOL        success,
                                        NSError *   nilable error);
    
    enum {
        // Memory Constants
        kNil       = 0,
        kNilUPP    = 0,
        kNilRefCon = 0
    };
    
    
    /**
     writes a weight sample to HealthKit
    
     @param weight as HKQuantityTypeIdentifierBodyMass
     */
    - (void) writeCDAHeartRateSample: ( NSStringPtr ) valueStr
                            cdaUnits: ( NSStringPtr ) cdaUnits
                                date: ( NSDate * ) date {      // was (CGFloat)
        double  theValue = kNil;
    
        // Each quantity consists of a value and a unit.
        HKUnit *            theMeasurementUnit = nil;
        HKQuantity *        theQuantity        = nil;
    
        HKQuantityType *    theHeartRateType   = nil;
        NSDate *            theDate            = nil;
    
        // For every sample, we need a sample type, quantity and a date.
        HKQuantitySample *  theSample = nil;
        VoidBoolErrorBlock  theBlock  = nil;
    
        theValue           = [ valueStr integerValue ];
    //    theMeasurementUnit = [ HKUnit unitFromCDAString: cdaUnits ];
        theMeasurementUnit = [ HKUnit unitFromString: kCountPerMinUnitStr ];    /// FIXME: temp code StackOverflow example
        theQuantity        = [ HKQuantity quantityWithUnit: theMeasurementUnit
                                               doubleValue: theValue ];
    
        theHeartRateType = [ HKQuantityType quantityTypeForIdentifier: HKQuantityTypeIdentifierHeartRate ];
        theDate          = ( date != nil ) ? date : [ NSDate date ];///???: default to today's date?
    
        theBlock = [ self saveCDAHeartRateObjectBlock: theValue ];
    
        // For every sample, we need a sample type, quantity and a date.
        theSample = [HKQuantitySample quantitySampleWithType: theHeartRateType
                                                          quantity: theQuantity
                                                         startDate: theDate
                                                           endDate: theDate];
        [ self.healthStore saveObject: theSample
                       withCompletion: theBlock ];
    }
    
    
    
    /**
     companion block encapsulation for writeCDAHeartRateSample{}
    
     @return  completion block for saveObject: withCompletion in writeCDAHeartRateSample{}
     */
    - ( VoidBoolErrorBlock ) saveCDAHeartRateObjectBlock: ( double ) value {
        VoidBoolErrorBlock theResult = nil;
    
        theResult = ^(BOOL success, NSError *error) {
            if (!success) {
                ///NSLog(@"Error while saving Heart Rate (%f) to Health Store: %@.", value, error);
            }
        };
    
        return theResult;
    }
    
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  • 2021-02-13 22:14

    Swift : Heart Rate (bpm) save into healthkit store

     private func saveHeartRateIntoHealthStore(height:Double) -> Void
        {
            // Save the user's heart rate into HealthKit.
            let heartRateUnit: HKUnit = HKUnit.countUnit().unitDividedByUnit(HKUnit.minuteUnit())
            let heartRateQuantity: HKQuantity = HKQuantity(unit: heartRateUnit, doubleValue: height)
    
            var heartRate : HKQuantityType = HKQuantityType.quantityTypeForIdentifier(HKQuantityTypeIdentifierHeartRate)
            let nowDate: NSDate = NSDate()
    
            let heartRateSample: HKQuantitySample = HKQuantitySample(type: heartRate
                , quantity: heartRateQuantity, startDate: nowDate, endDate: nowDate)
    
            let completion: ((Bool, NSError!) -> Void) = {
                (success, error) -> Void in
    
                if !success {
                    println("An error occured saving the Heart Rate sample \(heartRateSample). In your app, try to handle this gracefully. The error was: \(error).")
    
                    abort()
                }
    
            }
    
            self.healthStore!.saveObject(heartRateSample, withCompletion: completion)
    
        }// end saveHeartRateIntoHealthStore
    
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  • 2021-02-13 22:19

    In Swift 3:

    func saveHeartRate(date: Date = Date(), heartRate heartRateValue: Double, completion completionBlock: @escaping (Bool, Error?) -> Void) {
        let unit = HKUnit.count().unitDivided(by: HKUnit.minute())
        let quantity = HKQuantity(unit: unit, doubleValue: heartRateValue)
        let type = HKQuantityType.quantityType(forIdentifier: .heartRate)!
    
        let heartRateSample = HKQuantitySample(type: type, quantity: quantity, start: date, end: date)
    
        self.healthKitStore.save(heartRateSample) { (success, error) -> Void in
            if !success {
                print("An error occured saving the HR sample \(heartRateSample). In your app, try to handle this gracefully. The error was: \(error).")
            }
            completionBlock(success, error)
        }
    }
    
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