health-kit

I have an HKObserverQuery setup to fetch steps in the background ( enableBackgroundDelivery method is called in application:didFinishLaunchingWithOptions: ). The steps are retrieved in the background, but I would also like to store the retrieved steps in a Firebase database. This part is failing though, nothing is stored in Firebase. The method to store the steps does work correctly when the app is in the foreground. Any ideas on how to successfully write data in Firebase while in the background would be appreciated. class HealthKitManager { static let shared = HealthKitManager() private let

I just did a HKSourceQuery and got some results. When I do a println of the results, I got this: <HKSource:0x156c1520 "Health" (com.apple.Health)>//description of the object How do I use this to make a predicate using the HKQuery.predicateForObjectsFromSource(/* source goes here */) Here is the sample code in Obj-c, NSSortDescriptor *timeSortDesriptor = [[NSSortDescriptor alloc] initWithKey:HKSampleSortIdentifierEndDate ascending:NO]; HKQuantityType *quantityType = [HKQuantityType quantityTypeForIdentifier:HKQuantityTypeIdentifierActiveEnergyBurned]; HKSourceQuery *sourceQuery = [

I'm following some tutorials on HealthKit using swift, one of the tutorials I'm following is how to retrieve some data from the HealthKit such as weight, height age. The tutorial shows how to retrieve the most recent record for each them, the following codes shows that: func readMostRecentSample(sampleType:HKSampleType , completion: ((HKSample!, NSError!) -> Void)!) { // 1. Build the Predicate let past = NSDate.distantPast() as! NSDate let now = NSDate() let mostRecentPredicate = HKQuery.predicateForSamplesWithStartDate(past, endDate:now, options: .None) // 2. Build the sort descriptor to