ios - 如何检索healthkit数据并显示？

Question

我正在开发一个步骤应用程序。我想从健康应用程序中检索 Healthkit 数据，但我不知道该怎么做。我在互联网上找不到任何东西。我想从健康应用程序中获取步数数据。

Answer 1

For Asking permission 请求许可

if HKHealthStore.isHealthDataAvailable() {
    var writeDataTypes: Set<AnyHashable> = self.dataTypesToWrite()
    var readDataTypes: Set<AnyHashable> = self.dataTypesToRead()
    self.healthStore.requestAuthorization(toShareTypes: writeDataTypes, readTypes: readDataTypes, completion: {(_ success: Bool, _ error: Error) -> Void in
        if !success {
            print("You didn't allow HealthKit to access these read/write data types. In your app, try to handle this error gracefully when a user decides not to provide access. The error was: \(error). If you're using a simulator, try it on a device.")
            return
        }
    })
}

写入数据

func dataTypesToWrite() -> Set<AnyHashable> {
    var heightType: HKQuantityType? = HKObjectType.quantityType(forIdentifier: .height)
    var weightType: HKQuantityType? = HKObjectType.quantityType(forIdentifier: .bodyMass)
    var systolic: HKQuantityType? = HKObjectType.quantityType(forIdentifier: .bloodPressureSystolic)
    var dystolic: HKQuantityType? = HKObjectType.quantityType(forIdentifier: .bloodPressureDiastolic)
    return Set<AnyHashable>([heightType, weightType, systolic, dystolic])
}

从health kit读取数据

func dataTypesToRead() -> Set<AnyHashable> {
    var heightType: HKQuantityType? = HKObjectType.quantityType(forIdentifier: .height)
    var weightType: HKQuantityType? = HKObjectType.quantityType(forIdentifier: .bodyMass)
    var systolic: HKQuantityType? = HKObjectType.quantityType(forIdentifier: .bloodPressureSystolic)
    var dystolic: HKQuantityType? = HKObjectType.quantityType(forIdentifier: .bloodPressureDiastolic)
    var sleepAnalysis: HKCategoryType? = HKObjectType.categoryType(forIdentifier: .sleepAnalysis)
    var step: HKQuantityType? = HKObjectType.quantityType(forIdentifier: .stepCount)
    var walking: HKQuantityType? = HKObjectType.quantityType(forIdentifier: .distanceWalkingRunning)
    var cycling: HKQuantityType? = HKObjectType.quantityType(forIdentifier: .distanceCycling)
    var basalEnergyBurned: HKQuantityType? = HKObjectType.quantityType(forIdentifier: .basalEnergyBurned)

如果你想获得上周的步数，那么你可以按照下面的代码

self.healthStore = HKHealthStore()
var calendar = Calendar.current
var interval = DateComponents()
interval.day = 1
var anchorComponents: DateComponents? = calendar.dateComponents([.day, .month, .year], from: Date())
anchorComponents?.hour = 0
var anchorDate: Date? = calendar.date(fromComponents: anchorComponents)
var quantityType: HKQuantityType? = HKObjectType.quantityType(forIdentifier: .stepCount)
    // Create the query
var query = HKStatisticsCollectionQuery(quantityType, quantitySamplePredicate: nil, options: HKStatisticsOptionCumulativeSum, anchorDate: anchorDate, intervalComponents: interval)
// Set the results handler
query.initialResultsHandler = {(_ query: HKStatisticsCollectionQuery, _ results: HKStatisticsCollection, _ error: Error) -> Void in
    if error != nil {
        // Perform proper error handling here
        print("*** An error occurred while calculating the statistics: \(error?.localizedDescription) ***")
    }
    var endDate = Date()
    var startDate: Date? = calendar.date(byAddingUnit: .day, value: -7, to: endDate, options: 0)
    // Plot the daily step counts over the past 7 days
    results.enumerateStatistics(from: startDate, to: endDate, block: {(_ result: HKStatistics, _ stop: Bool) -> Void in
        var quantity: HKQuantity? = result.sumQuantity()
        if quantity != nil {
            var date: Date? = result.startDate
            var value: Double? = quantity?.doubleValue(forUnit: HKUnit.count())
            totalStepsCount = String(format: "%.f", value)
            DispatchQueue.main.async(execute: {() -> Void in
                self.calculateStepCountAndShow()
            })
            print("\(date): \(value)")
        }
    })
}
self.healthStore.executeQuery(query)
}