iOS HealthKit Project using HKActivitySummaryQuery - Summaries Always Nil - ios

Question

Objective: Read from HealthKit My Activity Data ( i.e. activity ring data - move calories, workout minutes, and stands )
Problem Experienced: Result Handler returns 'nil' HKActivitySummary Array
What I have Attempted:
I have added the HealthKit Capability to the project and added the two info.plist requirements:
Privacy - Health Share Usage Description
Privacy - Health Update Usage Description
And ensured I tapped "allow all" for permissions when the permission request popup appears for HealthKit within the iPhone.
I also have many weeks of activity data recorded so that should also be fine.
How can I retrieve the array of HKActivitySummary objects in order to replicate the rings within my iOS app.
My Code:
override func viewDidLoad() {
super.viewDidLoad()
startQueryForActivitySummary(view: self.view)
}
func startQueryForActivitySummary(view: UIView) {
let calendar = NSCalendar.current
let endDate = Date()
guard let startDate = calendar.date(byAdding: .day, value: -7, to: endDate) else {
fatalError("*** Unable to create the start date ***")
}
let units: Set<Calendar.Component> = [.day, .month, .year, .era]
var startDateComponents = calendar.dateComponents(units, from: startDate)
startDateComponents.calendar = calendar
var endDateComponents = calendar.dateComponents(units, from: endDate)
endDateComponents.calendar = calendar
let queryPredicate = HKQuery.predicate(forActivitySummariesBetweenStart: startDateComponents,
end: endDateComponents)
let query = HKActivitySummaryQuery(predicate: queryPredicate) { (query, summaries, error) -> Void in
if let summaries = summaries { // print(summaries) before this line will always return nil.
if let summary = summaries.first {
let activeEnergyBurned = summary.activeEnergyBurned.doubleValue(for: HKUnit.kilocalorie())
let activeEnergyBurnedGoal = summary.activeEnergyBurnedGoal.doubleValue(for: HKUnit.kilocalorie())
let activeEnergyBurnGoalPercent = round(activeEnergyBurned/activeEnergyBurnedGoal)
let frame = CGRect(x: 0, y: 0, width: 200, height: 200)
let ringView = HKActivityRingView(frame: frame)
view.addSubview(ringView)
ringView.setActivitySummary(summary, animated: true)
}
}
}
let allTypes = Set([HKObjectType.workoutType(),
HKObjectType.quantityType(forIdentifier: .activeEnergyBurned)!])
let healthStore = HKHealthStore()
healthStore.requestAuthorization(toShare: allTypes, read: allTypes) { (success, error) in
healthStore.execute(query)
}
}

Answer 1

I think you are missing permission HKObjectType.activitySummaryType()
Extend you types like this:
let allTypes = Set([
HKObjectType.workoutType(),
HKObjectType.quantityType(forIdentifier: .activeEnergyBurned)!,
HKObjectType.activitySummaryType()
])
Here is the documentation: https://developer.apple.com/documentation/healthkit/hkobjecttype/1615319-activitysummarytype