I am using the Google Maps SDK for iOS in my app. I need to get the address when map moves. But idleAtCameraPosition is not triggered.
func vwGMap(vwGMap: GMSMapView!, idleAtCameraPosition position: GMSCameraPosition!) {
print("changed position: \(vwGMap.camera.target)")
}
I have added delegate in viewDidLoad()
vwGMap.delegate = self
and declared the map view
@IBOutlet var vwGMap: GMSMapView!
Why is idleAtCameraPosition not triggered?
Complete Code
class MapViewController: BaseViewController,CLLocationManagerDelegate, UISearchBarDelegate ,GMSMapViewDelegate, LocateOnTheMap,GMSAutocompleteFetcherDelegate {
@IBOutlet var marker: UIImageView!
@IBOutlet var fromaddress: kTextFiledPlaceHolder!
@IBOutlet var toaddress: kTextFiledPlaceHolder!
@IBOutlet var fromdummy: kTextFiledPlaceHolder!
@IBOutlet var vwGMap: GMSMapView!
var searchResultController: SearchResultsController!
var resultsArray = [String]()
var gmsFetcher: GMSAutocompleteFetcher!
var locationManager = CLLocationManager()
var didFindMyLocation = false
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
self.addSlideMenuButton()
//Location Manager code to fetch current location
self.locationManager.delegate = self
self.locationManager.requestWhenInUseAuthorization()
self.locationManager.startUpdatingLocation()
vwGMap.delegate = self
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(true)
searchResultController = SearchResultsController()
searchResultController.delegate = self
gmsFetcher = GMSAutocompleteFetcher()
gmsFetcher.delegate = self
}
//Location Manager delegates
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
let location = locations.last
let camera = GMSCameraPosition.camera(withLatitude: (location?.coordinate.latitude)!, longitude:(location?.coordinate.longitude)!, zoom:16)
vwGMap.animate(to: camera)
CATransaction.begin()
CATransaction.setValue(5, forKey: kCATransactionAnimationDuration)
vwGMap.animate(toViewingAngle: 40)
vwGMap.animate(toBearing: 80)
//vwGMap.animate(toZoom: 18)
CATransaction.commit()
vwGMap.settings.myLocationButton = true
vwGMap.isMyLocationEnabled = true
vwGMap.delegate = self
self.vwGMap.addSubview(toaddress)
self.vwGMap.addSubview(fromdummy)
self.vwGMap.addSubview(marker)
self.locationManager.stopUpdatingLocation()
}
public func didFailAutocompleteWithError(_ error: Error) {
// resultText?.text = error.localizedDescription
}
/**
* Called when autocomplete predictions are available.
* @param predictions an array of GMSAutocompletePrediction objects.
*/
public func didAutocomplete(with predictions: [GMSAutocompletePrediction]) {
//self.resultsArray.count + 1
print(predictions)
for prediction in predictions {
if let prediction = prediction as GMSAutocompletePrediction!{
self.resultsArray.append(prediction.attributedFullText.string)
}
}
self.searchResultController.reloadDataWithArray(self.resultsArray)
// self.searchResultsTable.reloadDataWithArray(self.resultsArray)
print("check")
print(resultsArray)
}
func locateWithLongitude(_ lon: Double, andLatitude lat: Double, andTitle title: String) {
DispatchQueue.main.async { () -> Void in
let position = CLLocationCoordinate2DMake(lat, lon)
let marker = GMSMarker(position: position)
let camera = GMSCameraPosition.camera(withLatitude: lat, longitude: lon, zoom: 10)
// self.vwGMap.camera = camera
//
// marker.title = "Address : \(title)"
// marker.map = self.vwGMap
CATransaction.begin()
CATransaction.setValue(5, forKey: kCATransactionAnimationDuration)
self.vwGMap.animate(to: camera)
CATransaction.commit()
}
}
func locate(_ lon: Double, andLatitude lat: Double) {
DispatchQueue.main.async { () -> Void in
let camera = GMSCameraPosition.camera(withLatitude: lat, longitude: lon, zoom: 10)
// self.vwGMap.camera = camera
//
// marker.title = "Address : \(title)"
// marker.map = self.vwGMap
CATransaction.begin()
CATransaction.setValue(5, forKey: kCATransactionAnimationDuration)
self.vwGMap.animate(to: camera)
CATransaction.commit()
}
}
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
// let placeClient = GMSPlacesClient()
//
//
// placeClient.autocompleteQuery(searchText, bounds: nil, filter: nil) {(results, error: Error?) -> Void in
// // NSError myerr = Error;
// print("Error @%",Error.self)
//
// self.resultsArray.removeAll()
// if results == nil {
// return
// }
//
// for result in results! {
// if let result = result as? GMSAutocompletePrediction {
// self.resultsArray.append(result.attributedFullText.string)
// }
// }
//
// self.searchResultController.reloadDataWithArray(self.resultsArray)
//
// }
print(searchText)
self.resultsArray.removeAll()
gmsFetcher?.sourceTextHasChanged(searchText)
}
func mapView(_ mapView: GMSMapView, idleAtCamera position: GMSCameraPosition) {
print("changed position")
}
}
Make sure to extend the class to GMSMapViewDelegate.
Sample code:
class Class-name : UIViewController,GMSMapViewDelegate
change code in viewDidLoad:
vwGMap = GMSMapView()
vwGMap.delegate = self
Use this method for tap marker event.
func mapView(_ mapView: GMSMapView, didTapAt coordinate: CLLocationCoordinate2D) {
print("You tapped at \(coordinate.latitude), \(coordinate.longitude)")
}
If map view is scroll:
func mapView(_ mapView: GMSMapView, idleAt cameraPosition: GMSCameraPosition) {
print("map scrolled.")
}