Fatal error upon building maps app ios - ios

Question

Getting an error, I've been searching all day on how to use Corelocation along with GoogleMaps. thought I already had it when i got an error at the GMScameraposition part of the code. basically i'm trying to get my location upon loading the view which is why most is within the viewdidload().
import UIKit
import GoogleMaps
import CoreLocation
class ViewController: UIViewController, CLLocationManagerDelegate {
var locationManager: CLLocationManager!
var currentLocation: CLLocation!
var long: Float64!
var lat: Float64!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
locationManager = CLLocationManager()
locationManager.delegate = self;
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.requestAlwaysAuthorization()
locationManager.startUpdatingLocation()
let camera = GMSCameraPosition.cameraWithLatitude(lat,
longitude: long, zoom:6)
let mapView = GMSMapView.mapWithFrame(CGRectZero, camera:camera)
let marker = GMSMarker()
marker.position = camera.target
marker.snippet = "Hello World"
marker.appearAnimation = kGMSMarkerAnimationPop
marker.map = mapView
self.view = mapView
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
currentLocation = locations.last! as CLLocation
long = currentLocation.coordinate.longitude;
lat = currentLocation.coordinate.latitude;
}
}

Answer 1

Your view loads before you have an updated location to fill your variables, so it's as you said in your comment, your long and lat variables have no value.
I wrote out the fixed viewDidLoad and didUpdateLocations functions for you here:
override func viewDidLoad() {
super.viewDidLoad()
locationManager = CLLocationManager()
locationManager.delegate = self;
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.requestAlwaysAuthorization()
locationManager.startUpdatingLocation()
let camera = GMSCameraPosition.cameraWithLatitude(0,
longitude: 0, zoom:0) //this can be set to wherever you want your view to start at
//UPDATE: changed the initializing frame to be equal to the view, instead of CGRectZero
let mapView = GMSMapView.mapWithFrame(self.view.frame, camera:camera)
let marker = GMSMarker()
marker.position = camera.target
marker.snippet = "Hello World"
marker.appearAnimation = kGMSMarkerAnimationPop
marker.map = mapView
self.view = mapView
}
//updated! This will tell your camera to snap to your latest location once you've received it.
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
currentLocation = locations.last
mapView.camera = GMSCameraPosition(target: currentLocation.coordinate, zoom: 6, bearing: 0, viewingAngle: 0)
}
}
Let me know if this works out for you.