更新步数时调用一些东西

时间:2017-11-07 17:05:34

标签: ios swift swift4 health-kit hkobserverquery

现在,我正在尝试设置我的应用,以便在用户更新其步数时调用一个函数。到目前为止,我有以下代码:

let steps: HKObjectType = HKObjectType.quantityType(forIdentifier: .stepCount)!
    if healthStore.authorizationStatus(for: steps) != HKAuthorizationStatus.notDetermined {
        healthStore.enableBackgroundDelivery(for: steps, frequency: .immediate, withCompletion: { (worked, error) in
            //registers for background data
            if error != nil {
                print(error)
            }
        })
        let sampleType = HKSampleType.quantityType(forIdentifier: HKQuantityTypeIdentifier.stepCount)!
        let query = HKObserverQuery(sampleType: sampleType, predicate: nil) {
            query, completionHandler, error in

            if error != nil {
                print(error)
                abort()
            }

            // Take whatever steps are necessary to update your app's data and UI
            // This may involve executing other queries
            self.getSteps(completion: { (stepCount) in
                print("Step count was updated to \(stepCount)")
            })
            completionHandler()
        }

        healthStore.execute(query)
    }

但是,当用户的stepCount在后台更新时,不会调用此方法,尽管getSteps方法在前台时可以正常工作。我是否正确地解决了这个问题,或者我正在努力做到这一点是不可能的?

1 个答案:

答案 0 :(得分:1)

您的代码看起来是正确的。您是在模拟器而不是真实设备上运行它吗?我最近遇到了这个问题,后台交付在模拟器中根本不起作用,但它可以在真实设备中使用