Google Maps iOS SDK, Getting Current Location of user

Question

For my iOS app (building in iOS7),i need to show user\'s current location when the app load.I am using Google Maps iOS SDK. I am follo

Answer 1

Xcode + Swift + Google Maps iOS

Step by step recipe:

1.) Add key string to Info.plist (open as source code):

NSLocationWhenInUseUsageDescription
This app needs your location to function properly

2.) Add CLLocationManagerDelegate to your view controller class:

class MapViewController: UIViewController, CLLocationManagerDelegate {
   ...
}

3.) Add CLLocationManager into your class:

var mLocationManager = CLLocationManager()
var mDidFindMyLocation = false

4.) Ask for permission and add observer:

override func viewDidLoad() {
        super.viewDidLoad()          

        mLocationManager.delegate = self
        mLocationManager.requestWhenInUseAuthorization()
        yourMapView.addObserver(self, forKeyPath: "myLocation", options: NSKeyValueObservingOptions.new, context: nil)
        ...
}

5.) Wait for authorization and enable location in Google Maps:

func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {

        if (status == CLAuthorizationStatus.authorizedWhenInUse) {
            yourMapView.isMyLocationEnabled = true
        }

    }

6.) Add observable for change of location:

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

        if (!mDidFindMyLocation) {

            let myLocation: CLLocation = change![NSKeyValueChangeKey.newKey] as! CLLocation

            // do whatever you want here with the location
            yourMapView.camera = GMSCameraPosition.camera(withTarget: myLocation.coordinate, zoom: 10.0)
            yourMapView.settings.myLocationButton = true

            mDidFindMyLocation = true

            print("found location!")

        }

    }

That's it!