Swift CMMotionActivityManager not displaying correct authorization Status - ios

Question

I am trying to create a very simple step counter and am following Kamil Wysocki's article at https://brightinventions.pl/blog/coremotion-pedometer-swift/. However, my .isActivityAvailable() is returning False preventing any of my other functions from initiating. Also, my CMMotionActivityManager.authorizationStatus() call is returning 3 (denied). I cannot for the life of me figure out why this is happening.
I have added Motion Usage Description to my info.plist with a description and have enabled authorization on my iPhone simulator. I have also tried simulating the "City walk" mode in the debug menu, which doesn't help. My code is below.
import UIKit
import CoreMotion
import CoreLocation
class ViewController: UIViewController {
#IBOutlet weak var startButton: UIButton!
#IBOutlet weak var activityTypeLabel: UILabel!
#IBOutlet weak var stepsCountLabel: UILabel!
private let activityManager = CMMotionActivityManager()
private let pedometer = CMPedometer()
private var shouldStartUpdating: Bool = false
private var startDate: Date? = nil
override func viewDidLoad() {
super.viewDidLoad()
startButton.addTarget(self, action: #selector(didTapStartButton), for: .touchUpInside)
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
guard let startDate = startDate else { return }
updateStepsCountLabelUsing(startDate: startDate)
}
#objc private func didTapStartButton() {
shouldStartUpdating = !shouldStartUpdating
shouldStartUpdating ? (onStart()) : (onStop())
}
}
extension ViewController {
private func onStart() {
startButton.setTitle("Stop", for: .normal)
startDate = Date()
checkAuthorizationStatus()
startUpdating()
}
private func onStop() {
startButton.setTitle("Start", for: .normal)
startDate = nil
stopUpdating()
}
private func startUpdating() {
if CMMotionActivityManager.isActivityAvailable() {
startTrackingActivityType()
} else {
activityTypeLabel.text = "Not available"
}
if CMPedometer.isStepCountingAvailable() {
startCountingSteps()
} else {
stepsCountLabel.text = "Not available"
}
}
private func checkAuthorizationStatus() {
switch CMMotionActivityManager.authorizationStatus() {
case CMAuthorizationStatus.denied:
onStop()
activityTypeLabel.text = "Not available"
stepsCountLabel.text = "Not available"
default:break
}
}
private func stopUpdating() {
activityManager.stopActivityUpdates()
pedometer.stopUpdates()
pedometer.stopEventUpdates()
}
private func on(error: Error) {
//handle error
}
private func updateStepsCountLabelUsing(startDate: Date) {
pedometer.queryPedometerData(from: startDate, to: Date()) {
[weak self] pedometerData, error in
if let error = error {
self?.on(error: error)
} else if let pedometerData = pedometerData {
DispatchQueue.main.async {
self?.stepsCountLabel.text = String(describing: pedometerData.numberOfSteps)
}
}
}
}
private func startTrackingActivityType() {
activityManager.startActivityUpdates(to: OperationQueue.main) {
[weak self] (activity: CMMotionActivity?) in
guard let activity = activity else { return }
DispatchQueue.main.async {
if activity.walking {
self?.activityTypeLabel.text = "Walking"
} else if activity.stationary {
self?.activityTypeLabel.text = "Stationary"
} else if activity.running {
self?.activityTypeLabel.text = "Running"
} else if activity.automotive {
self?.activityTypeLabel.text = "Automotive"
}
}
}
}
private func startCountingSteps() {
pedometer.startUpdates(from: Date()) {
[weak self] pedometerData, error in
guard let pedometerData = pedometerData, error == nil else { return }
DispatchQueue.main.async {
self?.stepsCountLabel.text = pedometerData.numberOfSteps.stringValue
}
}
}
}
Here is my viewController upon running and clicking start
Big thanks in advance for anyone who can offer any knowledge!!!

Answer 1

Use this code to check authorization status :
let manager = CMMotionActivityManager()
let today = Date()
manager.queryActivityStarting(from: today, to: today, to: OperationQueue.main, withHandler: { (activities: [CMMotionActivity]?, error: Error?) -> () in
if error != nil {
let errorCode = (error! as NSError).code
if errorCode == Int(CMErrorMotionActivityNotAuthorized.rawValue) {
print("NotAuthorized")
}
} else {
print("Authorized")
//Start Tracking Activity
}
manager.stopActivityUpdates()
})
Hope this will work for you.