get the "unexpectedly found nil while unwrapping an Optional value" error

Question

Im using google places api to and use the coordinates to put an annotation on an apple maps.

What I want to do now is to translate coordinates to name and address and use it for the Ekreminder. This is my code so far but i get the error "fatal error: unexpectedly found nil while unwrapping an Optional value" when i try to run it:

    addLocationReminderViewController.name = self.mapItemData.placemark.name

    // Construct the address
    let dic = self.mapItemData.placemark.addressDictionary as Dictionary!
    let city = dic["City"] as! String
    let state = dic["State"] as! String
    let country = dic["Country"] as! String
    addLocationReminderViewController.address = "\(city), \(state), \(country)"
}

edit this is how im getting the info:

                    if data != nil{
                    let dic = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableLeaves) as!  NSDictionary

                    let lat = dic["results"]?.valueForKey("geometry")?.valueForKey("location")?.valueForKey("lat")?.objectAtIndex(0) as! Double
                    let lon = dic["results"]?.valueForKey("geometry")?.valueForKey("location")?.valueForKey("lng")?.objectAtIndex(0) as! Double
                    let point = MKPointAnnotation()
                    point.coordinate = CLLocationCoordinate2D(latitude: lat, longitude: lon)
                    point.title = self.resultsArray[indexPath.row]
                    let region = MKCoordinateRegion(center: point.coordinate, span: MKCoordinateSpan(latitudeDelta: 0.1, longitudeDelta: 0.1))
                    dispatch_async(dispatch_get_main_queue(), { () -> Void in
                        self.mapView.setRegion(region, animated: true)
                        self.mapView.addAnnotation(point)
                        self.mapView.selectAnnotation(point, animated: true)
                        //
                        let placemark = MKPlacemark(coordinate: point.coordinate, addressDictionary: nil)
                        let mapItem = MKMapItem(placemark: placemark)
                        self.mapItemData = mapItem
                        //
                    })

Do you really mean `Dictionary!`? – GoZoner Jan 24 '16 at 15:19 — GoZoner, Jan 24 '16 at 15:19

score 0 · Answer 1 · answered Jan 24 '16 at 15:23

You are 'blindly' casting dictionary references for "City", "State" and "Country" to String using as!. If any one of them doesn't exist in the dictionary or isn't a string then you get your fatal error.

How do you plan to handle a malformed dictionary? You could use

if let city    = dic["City"]    as? String,
   let state   = dic["State"]   as? String,
   let country = dic["Country"] as? String {
  // you now have your values
  addLocationReminderViewController.address = "\(city), \(state), \(country)"
}
else {
 // something is wrong
}

get the "unexpectedly found nil while unwrapping an Optional value" error

1 Answers1