Question

override func viewDidLoad() {
    super.viewDidLoad()
    ref = Database.database().reference()
    let healthKitTypes: Set = [
        // access step count
        HKObjectType.quantityType(forIdentifier: HKQuantityTypeIdentifier.stepCount)!
    ]
    healthStore.requestAuthorization(toShare: healthKitTypes, read: healthKitTypes) { (_, _) in
        print("authorized???")
    }
    healthStore.requestAuthorization(toShare: healthKitTypes, read: healthKitTypes) { (bool, error) in
        if let e = error {
            print("oops something went wrong during authorization \(e.localizedDescription)")
        } else {
            print("User has completed the authorization flow")
        }
    }


    getTodaysSteps { (result) in
        print("\(result)")
        self.steps = result

        DispatchQueue.main.async {
            if result == 0 {
                self.StepDisplay.text = " You haven't walked"
            } else {
                self.StepDisplay.text = "\(result)"
            }

        }
    }


    getStepHistory()



}


func getStepHistory() {
    let calendar = Calendar.current
    var interval = DateComponents()
    interval.day = 1

    // Set the anchor date to Monday at 3:00 a.m.
    var anchorComponents = calendar.dateComponents([.day, .month, .year, .weekday], from: Date())


    let offset = (7 + (anchorComponents.weekday ?? 0) - 2) % 7
    anchorComponents.day = (anchorComponents.day ?? 0) - offset
    anchorComponents.hour = 0
    anchorComponents.minute = 1

    guard let anchorDate = calendar.date(from:anchorComponents) else {
        fatalError("*** unable to create a valid date from the given components ***")
    }

    guard let quantityType = HKObjectType.quantityType(forIdentifier: HKQuantityTypeIdentifier.stepCount) else {
        fatalError("*** Unable to create a step count type ***")
    }

当设备上已经给出授权时，此代码可以正常工作。但是，如果之前未获得授权，则除非在viewDidLoad中将getStepHistory（）注释掉，否则它将无法工作。我尝试从getStepHistory（）函数中请求其他授权，但不能解决问题

Answer 1

如果已被授权，则需要在完成块内将getStepHistory调用到requestAuthorization。

healthStore.requestAuthorization(toShare: healthKitTypes, read: healthKitTypes) { (success, error) in
    if let e = error {
        print("oops something went wrong during authorization \(e.localizedDescription)")
    } else if success {
        print("User has granted access")
        getStepHistory()
    } else {
        print("User has completed the authorization flow but there is no access")
    }
}

Answer 2

请求用户权限

要请求授权，我们调用

requestAuthorization（toShare：，readTypes：，completion :)在 HKHealthStore实例。此方法接受三个参数：

一组可选的HKSampleType对象
一组可选的HKObjectType对象
具有两个参数的完成处理程序，一个布尔值，指示授权请求的结果（成功或失败），以及一个可选错误

重要的是要理解，完成处理程序的布尔值并不表示用户是否允许或拒绝访问所请求的健康数据类型。它仅通知应用程序用户是否响应了应用程序的授权请求。如果用户通过取消授权请求来取消表单，则完成处理程序的布尔值将设置为false。

视图中确实加载了：

healthStore.requestAuthorization(toShare: healthKitTypes, read: healthKitTypes) { (success, error) in
    if let err = error {
        print("Error \(err.localizedDescription)")
    } else if success {
        // Get the Step Count....
        getStepHistory()
    } else {
        print("No access to healthkit data")
    }
}

（可选）您可以尝试使用此功能来获取步数：

    let healthStore = HKHealthStore()

    func getTodaysSteps(completion: @escaping (Double) -> Void) {
        let stepsQuantityType = HKQuantityType.quantityType(forIdentifier: .stepCount)!

        let now = Date()
        let startOfDay = Calendar.current.startOfDay(for: now)
        let predicate = HKQuery.predicateForSamples(withStart: startOfDay, end: now, options: .strictStartDate)

        let query = HKStatisticsQuery(quantityType: stepsQuantityType, quantitySamplePredicate: predicate, options: .cumulativeSum) { _, result, _ in
            guard let result = result, let sum = result.sumQuantity() else {
                completion(0.0)
                return
            }
            completion(sum.doubleValue(for: HKUnit.count()))
        }

        healthStore.execute(query)
    }

如果先前在设备上授权了Healthkit访问权，但可以正常运行，因此工作正常

2 个答案: