ne montre qu'une seule autorisation Lieu alerte

Question

Je veux que ma demande de prendre position dans les modes actifs et de fond (si l'utilisation ne NSLocationAlwaysUsageDescription la permission alors myLocationButton ne montre pas). Je réglerai Info.plist:

<key>NSLocationAlwaysUsageDescription</key> 
<string>$(PRODUCT_NAME) location use</string> 
<key>NSLocationWhenInUseUsageDescription</key> 
<string>$(PRODUCT_NAME) location use</string> 
<key>UIBackgroundModes</key> 

Et ajouter MapViewController

self.locationManager.requestWhenInUseAuthorization() 
self.locationManager.requestAlwaysAuthorization() 

Mais quand l'application démarre, seule la première alerte d'autorisation de localisation est affiché, et la seconde alerte d'autorisation apparaît après l'application est rouvert.

Mise à jour:

override func viewDidLoad() { 
     super.viewDidLoad() 
...  
locationManager.delegate = self 
locationManager.requestWhenInUseAuthorization() 
viewMap.addObserver(self, forKeyPath: "myLocation", options: NSKeyValueObservingOptions.new, context: nil) 
     self.startLocationUpdates() 
... 
} 

func startLocationUpdates() { 
    self.locationManager.delegate = self 
    self.locationManager.desiredAccuracy = kCLLocationAccuracyBest 
    self.locationManager.activityType = CLActivityType.automotiveNavigation 
    self.locationManager.distanceFilter = distanceFilterMetr 
    self.locationManager.requestAlwaysAuthorization() 
    self.locationManager.startUpdatingLocation() 
} 

override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) { 

     let myLocation: CLLocation = change?[NSKeyValueChangeKey.newKey] as! CLLocation 
     viewMap.camera = GMSCameraPosition.camera(withTarget: myLocation.coordinate, zoom: observeZoom) 
     mapRoute.coordinateLatitude = myLocation.coordinate.latitude 
     mapRoute.coordinateLongitude = myLocation.coordinate.longitude 
     viewMap.delegate = self 
     viewMap.settings.myLocationButton = true 
     viewMap.settings.compassButton = true 
     didFindMyLocation = true 
} 

Answer 1

Ajouter ce délégué dans votre classe:

CLLocationManagerDelegate 

maintenant à l'intérieur vous classe:

var locationManager:CLLocationManager! 
var map = GMSMapView() 
var currentLatitude:Double! 
var currentLongitude:Double! 

Ensuite ajoutez dans votre code:

override func loadView() { 

    print("loadView called") 

    // Enable some map settings 

    map.isMyLocationEnabled = true 
    map.settings.myLocationButton = true 
    map.settings.compassButton = true 
    map.settings.scrollGestures = true 
    map.settings.zoomGestures = true 
    map.delegate = self 

    view = map 
} 

override func viewDidLoad() { 

    super.viewDidLoad() 

    print("ViewDidLoad called") 

    // Configuring location manager. 

    locationManager = CLLocationManager() 
    locationManager.delegate = self 
    locationManager.requestAlwaysAuthorization() 
    locationManager.desiredAccuracy = kCLLocationAccuracyBest 
    locationManager.startUpdatingLocation() 
    locationManager.startMonitoringSignificantLocationChanges() 
} 

func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { 

    print("locationManager function called") 

    // Fetch current location coordinates 

    let locValue:CLLocationCoordinate2D = (locationManager.location?.coordinate)! 
    currentLatitude = locValue.latitude 
    currentLongitude = locValue.longitude 
    print("Current Location = \(currentLatitude!), \(currentLongitude!)") 

    // Zoom to current location 

    let target = CLLocationCoordinate2D(latitude: currentLatitude!, longitude: currentLongitude!) 
    map.camera = GMSCameraPosition.camera(withTarget: target, zoom: 17) 

    locationManager.stopUpdatingLocation() 

} 

Après avoir ajouté ce code, faites un clic droit sur votre Info.plist et "Ouvrir comme code source". Ajoutez ceci dans votre Info.plist.

<key>LSApplicationQueriesSchemes</key> 
<array> 
    <string>googlechromes</string> 
    <string>comgooglemaps</string> 
</array> 
<key>LSRequiresIPhoneOS</key> 
<true/> 
<key>NSBluetoothPeripheralUsageDescription</key> 
<string></string> 
<key>NSCameraUsageDescription</key> 
<string></string> 
<key>NSContactsUsageDescription</key> 
<string></string> 
<key>NSLocationUsageDescription</key> 
<string></string> 
<key>NSLocationWhenInUseUsageDescription</key> 
<string></string> 
<key>NSLocationAlwaysUsageDescription</key> 
<string></string> 
<key>NSMicrophoneUsageDescription</key> 
<string></string> 
<key>NSMotionUsageDescription</key> 
<string></string> 
<key>NSPhotoLibraryUsageDescription</key> 
<string></string> 
<key>NSRemindersUsageDescription</key> 
<string></string> 
<key>NSSiriUsageDescription</key> 
<string></string> 
<key>NSSpeechRecognitionUsageDescription</key> 
<string></string> 
<key>NSVideoSubscriberAccountUsageDescription</key> 
<string></string>