从HealthKit获取昨天的步骤
我正在构build一个个人使用的应用程序，而且我目前正在坚持如何准确地从healthkit得到昨天的步骤。 然后从那里，把它放到一个variables（应该很容易，我知道）。
我有一个HealthKitManager类，从视图内调用该函数，然后将其附加到来自同一视图的variables。
我已经search了大部分健康问题的资料，并且找回数据，但是我不认为这是准确的数据。 我昨天的电话数据是1442步，但是它返回了2665步。 最重要的是，当我试图把数据是一个variables，打印出0。
HealthKitManagerClass
import Foundation import HealthKit class HealthKitManager { let storage = HKHealthStore() init() { checkAuthorization() } func checkAuthorization() -> Bool { // Default to assuming that we're authorized var isEnabled = true // Do we have access to HealthKit on this device? if HKHealthStore.isHealthDataAvailable() { // We have to request each data type explicitly let steps = NSSet(object: HKQuantityType.quantityTypeForIdentifier(HKQuantityTypeIdentifierStepCount)!) // Now we can request authorization for step count data storage.requestAuthorizationToShareTypes(nil, readTypes: steps as? Set<HKObjectType>) { (success, error) -> Void in isEnabled = success } } else { isEnabled = false } return isEnabled } func yesterdaySteps(completion: (Double, NSError?) -> ()) { // The type of data we are requesting (this is redundant and could probably be an enumeration let type = HKSampleType.quantityTypeForIdentifier(HKQuantityTypeIdentifierStepCount) // Our search predicate which will fetch data from now until a day ago // (Note, 1.day comes from an extension // You'll want to change that to your own NSDate let calendar = NSCalendar.currentCalendar() let yesterday = calendar.dateByAddingUnit(.Day, value: -1, toDate: NSDate(), options: []) //this is probably why my data is wrong let predicate = HKQuery.predicateForSamplesWithStartDate(yesterday, endDate: NSDate(), options: .None) // The actual HealthKit Query which will fetch all of the steps and sub them up for us. let query = HKSampleQuery(sampleType: type!, predicate: predicate, limit: 0, sortDescriptors: nil) { query, results, error in var steps: Double = 0 if results?.count > 0 { for result in results as! [HKQuantitySample] { steps += result.quantity.doubleValueForUnit(HKUnit.countUnit()) } } //I'm unsure if this is correct as well completion(steps, error) print("\(steps) STEPS FROM HEALTH KIT") //this adds the steps to my character (is this in the right place) Player.User.Gold.addSteps(Int(steps)) } //not 100% on what this does, but I know it is necessary storage.executeQuery(query) }} ViewControllerClass
import UIKit import Foundation class UpdateViewController: UIViewController { @IBOutlet var back: UIButton! let HKM = HealthKitManager() var stepsFromPhone = Double() override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. back.transform = CGAffineTransformMakeRotation(CGFloat(M_PI_2)) HKM.yesterdaySteps(){ steps, error in self.stepsFromPhone = steps } Player.User.Gold.addSteps(Int(stepsFromPhone)) print(Player.User.Gold.getSteps(), "IN PLAYER") } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } }
输出
print(Player.User.Gold.getSteps(), "IN PLAYER")
是
0 IN PLAYER
输出
print("\(steps) STEPS FROM HEALTH KIT")
是
2665.0 STEPS FROM HEALTH KIT
所以，基本上我的问题是：
- 我昨天需要什么NSDate（）？
- 我如何从yesterdaySteps（）中获取步骤，并将它们正确放置到UpdateViewController中的variables中？
感谢您的任何帮助！
这是我在我的healthStore类中使用的方法
func TodayTotalSteps(completion: (stepRetrieved: Double) -> Void) { let type = HKSampleType.quantityTypeForIdentifier(HKQuantityTypeIdentifierStepCount) // The type of data we are requesting let calendar = NSCalendar.currentCalendar() let interval = NSDateComponents() interval.day = 1 let anchorComponents = calendar.components([.Day , .Month , .Year], fromDate: NSDate()) anchorComponents.hour = 0 let anchorDate = calendar.dateFromComponents(anchorComponents) let stepsQuery = HKStatisticsCollectionQuery(quantityType: type!, quantitySamplePredicate: nil, options: .CumulativeSum, anchorDate: anchorDate!, intervalComponents: interval) stepsQuery.initialResultsHandler = {query, results, error in let endDate = NSDate() var steps = 0.0 let startDate = calendar.dateByAddingUnit(.Day, value: 0, toDate: endDate, options: []) if let myResults = results{ myResults.enumerateStatisticsFromDate(startDate!, toDate: endDate) { statistics, stop in if let quantity = statistics.sumQuantity(){ let date = statistics.startDate steps = quantity.doubleValueForUnit(HKUnit.countUnit()) // print("\(date): steps = \(steps)") } completion(stepRetrieved: steps) } } else { completion(stepRetrieved: steps) } } executeQuery(stepsQuery) }
这是我如何使用它
func getStepsData() { // I am sendng steps to my server thats why using this variable var stepsToSend = 0 MyHealthStore.sharedHealthStore.todayManuallyAddedSteps({ (steps , error) in if error != nil{ // handle error } else{ // truncating manuall steps MyHealthStore.sharedHealthStore.TodayTotalSteps({ (stepRetrieved) in stepsToSend = Int(stepRetrieved - steps) }) } }) }
这里是上面用于手动添加步骤的函数，我们将其截断以获取确切的步骤
func todayManuallyAddedSteps(completion: (Double, NSError?) -> () ) { let type = HKSampleType.quantityTypeForIdentifier(HKQuantityTypeIdentifierStepCount) // The type of data we are requesting let date = NSDate() let cal = NSCalendar(calendarIdentifier: NSCalendarIdentifierGregorian)! let newDate = cal.startOfDayForDate(date) let predicate = HKQuery.predicateForSamplesWithStartDate(newDate, endDate: NSDate(), options: .None) // Our search predicate which will fetch all steps taken today // The actual HealthKit Query which will fetch all of the steps and add them up for us. let query = HKSampleQuery(sampleType: type!, predicate: predicate, limit: 0, sortDescriptors: nil) { query, results, error in var steps: Double = 0 if results?.count > 0 { for result in results as! [HKQuantitySample] { // checking and adding manually added steps if result.sourceRevision.source.name == "Health" { // these are manually added steps steps += result.quantity.doubleValueForUnit(HKUnit.countUnit()) } else{ // these are auto detected steps which we do not want from using HKSampleQuery } } completion(steps, error) } else { completion(steps, error) } } executeQuery(query) }
我希望它有帮助。 如果您遇到任何问题，请告诉我。