swift - requestWhenInUseAuthorization() not Work in iOS 8 With NSLocationWhenInUseUsageDescription Key in Info.plist

Question

I am using iOS SDK 8.1 trying to call requestWhenInUseAuthorization() method to prompt user to grant access to my app. I imported CoreLocation.framework, and added NSLocationWhenInUseUsageDescription and NSLocationAlwaysUsageDescription keys into info.plist. When I ran the app, it never prompted me for location access. Below is my code, what have I missed?

import UIKit
import CoreLocation
import MapKit

class ViewController: UIViewController, CLLocationManagerDelegate {

    override func viewDidLoad() {
        super.viewDidLoad()
        var manager = CLLocationManager()
        manager.delegate = self
        manager.desiredAccuracy = kCLLocationAccuracyBest

        let authorizationStatus = CLLocationManager.authorizationStatus()
        switch authorizationStatus {
        case .Authorized:
            println("authorized")
        case .AuthorizedWhenInUse:
            println("authorized when in use")
        case .Denied:
            println("denied")
        case .NotDetermined:
            println("not determined")
        case .Restricted:
            println("restricted")
        }

        manager.requestWhenInUseAuthorization()
        manager.startUpdatingLocation()

    }

    func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!) {
        let location = locations[0] as CLLocation
        println("Latitude: (location.coordinate.latitude). Longitude: (location.coordinate.longitude).")
    }

    func locationManager(manager: CLLocationManager!, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
        switch status {
        case .Authorized:
            println("authorized")
        case .AuthorizedWhenInUse:
            println("authorized when in use")
        case .Denied:
            println("denied")
        case .NotDetermined:
            println("not determined")
        case .Restricted:
            println("restricted")
        }
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

}

The console only showed "not determined" once and nothing else. So I went to iPhone Simulator => Settings => Privacy => Location => My App. It showed me 3 options: "Never", "While Using the App", "Always". But nothing was selected.

Answer 1

Problem solved. My manager was declared as local var inside viewDidLoad() method, but it should've been a class level property.

After I moved manager declaration out of viewDidLoad(), my app worked.

Not sure how exactly manager.requestWhenInUseAuthorization() work behind the scene and why exactly manager defined within viewDidLoad() not work. Hope someone who knows this detail enlighten me.