CLLocationManager requestAlwaysAuthorization popup shows and hides immediately

Question

CLLocationManager requestAlwaysAuthorization popup shows and hides immediately, leaving user no time to press allow button. This is a class I wrote for location managing:

import UIKit

class TMLocationManager: NSObject, CLLocationManagerDelegate {
    var locationManager: CLLocationManager?

    override init() {
        super.init()
    }

    static func startLocationManager() {
        let manager = TMLocationManager()
        manager.getPermission()
    }

    private func getPermission () {
        locationManager = CLLocationManager()
        locationManager!.desiredAccuracy = kCLLocationAccuracyBestForNavigation
        locationManager!.delegate = TMLocationManager.init()

        switch CLLocationManager.authorizationStatus() {
        case .Denied, .Restricted:
            return
        case .NotDetermined:
            locationManager!.requestAlwaysAuthorization()
            break
        case .AuthorizedAlways, .AuthorizedWhenInUse:
            locationManager!.startUpdatingLocation()
        default:
            break
        }
    }

}

In my code I just write TMLocationManager.startLocationManager()

Answer 1

结合我的评论，一旦startLocationManager方法完成执行，您需要确保保留manager变量，因为它将被释放，并且警报已被startLocationManager 。