当前位置谷歌地图swift，无法访问defaultLocation.coordinate

Question

在谷歌文档文档中指定当前位置时，他们使用的是“默认location.coordinate”，我无法在我的代码中访问defaultLocation.coordinate。

以下是文档的链接：https://developers.google.com/maps/documentation/ios-sdk/current-place-tutorial

这是viewDidLoad中的代码

    GMSServices.provideAPIKey("AIzaSyARsPfNs54hrUAC4yKtHeu2jXfGjeA0b-E")
    GMSPlacesClient.provideAPIKey("AIzaSyARsPfNs54hrUAC4yKtHeu2jXfGjeA0b-E ")
    let camera = GMSCameraPosition.camera(withLatitude: -33.86, longitude: 151.20, zoom: 6.0)
    mapView = GMSMapView.map(withFrame: CGRect.zero, camera: camera)
    view = mapView

    // creating the marker //

    let marker = GMSMarker()
    marker.position = CLLocationCoordinate2D(latitude: -33.86, longitude: 151.20)
    marker.title = "Sydney"
    marker.snippet = "Australia"
    marker.map = mapView

这是我的扩展代码

 extension MapsViewController: CLLocationManagerDelegate {
     func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
     let location : CLLocation = locations.last!
     print("Location:\(location)")
     let camera = GMSCameraPosition.camera(withLatitude: location.coordinate.latitude, longitude: location.coordinate.longitude, zoom: zoomLevel)
     if mapView.isHidden {
        mapView.isHidden = false
        mapView.camera = camera
      } 
      else {
        mapView.animate(to: camera)
    }

}
  func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
    switch status {
    case .restricted:
        // display the map the default location
        mapView.isHidden = false
    case .denied :
        print("User denied access to location")
        mapView.isHidden = false
    case .notDetermined :
        print("Location status not deteremined")
    case .authorizedAlways  : fallthrough
    case . authorizedWhenInUse :
        print("Location status is OK")

    }
}

Answer 1

我想您没有在Info.plist文件中添加密钥NSLocationWhenInUseUsageDescription。

然后，它应显示iOS系统弹出窗口，以允许位置访问。

Answer 2

我已经阅读了你的问题，并检查了你给地图教程的链接。我发现您的viewDidLoad方法中缺少一些代码：

locationManager = CLLocationManager()
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.requestAlwaysAuthorization()
locationManager.distanceFilter = 50
locationManager.startUpdatingLocation()
locationManager.delegate = self

placesClient = GMSPlacesClient.shared()

不像locationManager.delegate = self那样将委托赋给CLLocationManager的对象

我不认为你的分机会被称为(CLLocationManagerDelegate).

也叫

根据@Let's_Create的回答，info.plist应该有以下键来解释应用程序是如何使用它的。dataNSLocationAlwaysAndWhenInUseUsageDescription和NSLocationWhenInUseUsageDescription