I am currently working on an IOS project in which i have to calculate distance between two location. I have done without using google but i want to use google api to get accurate distance i am sharing my code here
let myLocation = CLLocation(latitude: CLLocationDegrees(latittude[indexPath.row])!, longitude: CLLocationDegrees(longittude[indexPath.row])!)
let lat = UserDefaults.standard.string(forKey: "lat") ?? ""
let long = UserDefaults.standard.string(forKey: "long") ?? ""
let myBuddysLocation = CLLocation(latitude: CLLocationDegrees(lat)!, longitude: CLLocationDegrees(long)!)
Use distance function of CoreLocation Framework,
var startLocation = CLLocation(latitude: startLatitude, longitude: startLongitude)
var endLocation = CLLocation(latitude: endLatitude, longitude: endLongitude)
var distance: CLLocationDistance = startLocation.distance(from: endLocation)
Swift 5+:
As far as I know, there are two ways to find the distance.
If you are looking for driving distance, you can always use MKDirections.
Here is the code for finding driving distance (You can also find walking, and transit distance by changing transport type).
let sourceP = CLLocationCoordinate2DMake( sourceLat, sourceLong)
let destP = CLLocationCoordinate2DMake( desLat, desLong)
let source = MKPlacemark(coordinate: sourceP)
let destination = MKPlacemark(coordinate: destP)
let request = MKDirections.Request()
request.source = MKMapItem(placemark: source)
request.destination = MKMapItem(placemark: destination)
// Specify the transportation type
request.transportType = MKDirectionsTransportType.automobile;
// If you want only the shortest route, set this to a false
request.requestsAlternateRoutes = true
let directions = MKDirections(request: request)
// Now we have the routes, we can calculate the distance using
directions.calculate { (response, error) in
if let response = response, let route = response.routes.first {
print(route.distance) //This will return distance in meters
}
}
If you are only looking for air distance/bird's eye distance/coordinate distance, you can use this code:
let sourceP = CLLocation(latitude: sourceLat, longitude: sourceLong)
let desP = CLLocation(latitude: desLat, longitude: desLong))
let distanceInMeter = sourceP.distance(from: desP)
I have implemented google place autocomplete api and I have applied bounds to restrict my auto complete search to one specific city Orlando, FL, USA but Google place api is not filtering data for only this city. It is searching placing all over USA and other cities name outside USA. I want google autocomplete api to return only this city addresses. Here is the code for same:
let placesClient = GMSPlacesClient()
let searchBound = getCoordinateBounds(latitude: CLLocationDegrees(28.5383), longitude: CLLocationDegrees(81.3792), distance: 1.45)
let filter = GMSAutocompleteFilter()
filter.country = "USA"
placesClient.autocompleteQuery(text!, bounds: searchBound, filter: filter, callback: { (results, error) in
})
//My getCoordinateBounds method
func getCoordinateBounds(latitude:CLLocationDegrees ,
longitude:CLLocationDegrees,
distance:Double = 0.001)->GMSCoordinateBounds{
let center = CLLocationCoordinate2D(latitude: latitude,
longitude: longitude)
let northEast = CLLocationCoordinate2D(latitude: center.latitude + distance, longitude: center.longitude + distance)
let southWest = CLLocationCoordinate2D(latitude: center.latitude - distance, longitude: center.longitude - distance)
return GMSCoordinateBounds(coordinate: northEast,
coordinate: southWest)
}
Note: I want to filter addresses those are around 100 miles radius of this latitude and longitude (that why I have given degree to 1.45). Another thing I added country filer USA after I found that my bounds filter is not working properly. So far I am able to restrict address search to USA.
You should also define the boundsMode parameter in your placesClient.autocompleteQuery() call. Have a look at the documentation:
https://developers.google.com/places/ios-api/reference/interface_g_m_s_places_client
boundsMode must be equal to GMSAutocompleteBoundsMode.Restrict to
interpret bounds as a restrict. By default bounds are interpreted as bias that's why you are getting results from outside.
https://developers.google.com/places/ios-api/reference/group___autocomplete_bounds_mode#gafbfae308afa98048c1e97864baa88568
let placesClient = GMSPlacesClient()
let searchBound = getCoordinateBounds(latitude: CLLocationDegrees(28.5383), longitude: CLLocationDegrees(81.3792), distance: 1.45)
let filter = GMSAutocompleteFilter()
filter.country = "USA"
placesClient.autocompleteQuery(text!, bounds: searchBound, boundsMode: GMSAutocompleteBoundsMode.Restrict, filter: filter, callback: { (results, error) in
})
The parameter boundsMode was introduced in SDK 2.5
I hope this helps!
I have a list of coordinates in database, but i would like to load only the coordinates that currently in the view of Google Map and add a marker onto it. How can i do that ?
Once you get latitude and longitude, you can use the following function to add map marker and zoom to marker location :
func showMapMarker() {
self.currentLocationMapView.clear()
DispatchQueue.main.async {
let position = CLLocationCoordinate2D(latitude: latitude, longitude: longitude)
let marker = GMSMarker(position: position)
let bounds: GMSCoordinateBounds = GMSCoordinateBounds(coordinate: position, coordinate: position)
marker.title = "Snippet Title"
marker.map = self.currentLocationMapView
marker.snippet = "Snippet Text"
let camera = self.currentLocationMapView.camera(for: bounds, insets: UIEdgeInsets())
self.currentLocationMapView.animate(with: GMSCameraUpdate.fit(bounds, withPadding: 15.0))
self.currentLocationMapView.camera = camera!
}
}
I have two coordinates, and I need to restrict my Google Maps map to the frame bounded by those two coordinates. For example, I have
let bounds = GMSCoordinateBounds(
coordinate: CLLocationCoordinate2D(
latitude: 59.615440364671244,
longitude: -17.978949286043644
), coordinate: CLLocationCoordinate2D(
latitude: 33.963318167747758,
longitude: 21.442294009029865
)
)
Then, I write,
map.cameraTargetBounds = bounds
However, this does nothing to restrict the bounds of the map while it should. According to the documentation,
If not nil, [cameraTargetBounds] constrains the camera target so that gestures cannot cause it to leave the specified bounds.
This question did not help me, partially because I must allow zooming as well as panning––it just must be restricted to a certain area.
Why is this not working, and how can I fix it?
You have to use GoogleFletcher. In this we will implement two filters (GMSCoordinateBound and Type). In start bound cordinate we will put current location and at end bound we will just add 1 in our current location cordinates.
Hopefully it helps.
let location = locations.last!
let neBoundsCorner = CLLocationCoordinate2D(latitude:location.coordinate.latitude,
longitude: location.coordinate.longitude)
let swBoundsCorner = CLLocationCoordinate2D(latitude: location.coordinate.latitude + 1, longitude: location.coordinate.longitude + 1)
let bounds = GMSCoordinateBounds(coordinate: neBoundsCorner,coordinate: swBoundsCorner)
let filter = GMSAutocompleteFilter()
filter.type = .establishment
fetcher = GMSAutocompleteFetcher(bounds: bounds, filter: filter)
I need your help, I'm working on an App where I have some pins (locations) and what I want is to get the distance between each one and my location. My code is the following
let annotation = MKPointAnnotation()
let annotationTwo = MKPointAnnotation()
let saintPaulHospitalBC = MKPointAnnotation()
override func viewDidLoad() {
super.viewDidLoad()
mapita.showsUserLocation = true // Mapita is the name of the MapView.
annotation.coordinate = CLLocationCoordinate2D(latitude: 25.647399800, longitude: -100.334304500)
mapita.addAnnotation(annotation)
annotationTwo.coordinate = CLLocationCoordinate2D(latitude: 25.589339000, longitude: -100.257724800)
mapita.addAnnotation(annotationTwo)
saintPaulHospitalBC.coordinate = CLLocationCoordinate2D(latitude: 49.280524700, longitude: -123.128232600)
mapita.addAnnotation(SaintPaulHospitalBC)
}
When I run the code, the map shows the pins, but what else can I do to start calculating the distance? Thank you!
You're gonna have to convert the coordinates of your annotations to CLLocation types, then get the distance between them. To ignore the height of the coordinates, as they are 2D, just use the latitude and longitude properties of the 2D coordinates, like so:
let loc1 = CLLocation(latitude: coord1.latitude, longitude: coord1.longitude)
However, CLLocation has some other properties such as speed and height, so if you want to factor those in you'll have to give more information. To find the distance between the two locations, do this:
let distance = loc1.distance(from: loc2)
This will give your answer as a double in meters.
Create a helper function to compute the distance between the user location and a given MKPointAnnotation pin:
/// Returns the distance (in meters) from the
/// user's location to the specified point.
private func userDistance(from point: MKPointAnnotation) -> Double? {
guard let userLocation = mapita.userLocation.location else {
return nil // User location unknown!
}
let pointLocation = CLLocation(
latitude: point.coordinate.latitude,
longitude: point.coordinate.longitude
)
return userLocation.distance(from: pointLocation)
}
Finally, to get the user distance to Saint Paul hospital:
if let distance = userDistance(from: saintPaulHospitalBC) {
// Use distance here...
}
Geolocation tracking latency. There is a catch though: the user distance might not always be available at first, since MapKit/CoreLocation geolocation tracking might still be running in the background.
One way around this, is to conform to the MKMapViewDelegate protocol and wait for the mapView(_:didUpdate:) callback before finally computing your distances.
To put it in perspective, you need to first specify what "distance" are you looking for. If you are looking for simple Euclidean Distance then any of the other answers or using distanceFromLocation would work. According to Apple's documentaion on distanceFromLocation
This method measures the distance between the two locations by tracing
a line between them that follows the curvature of the Earth. The
resulting arc is a smooth curve and does not take into account
specific altitude changes between the two locations.
This means, that the distance derived using this method will not be the actual route/transportation distance between two points.
If that is what you are looking for then head over to the answer I linked above, if not then keep reading (but either way, I encourage you to read the whole post :).
If you are looking for "route" distance (drivable, walkable etc.) between your location and the other annotations in the map, it's going to take little more work using MKRoute object. To be more specific you need to first have access to the MKMapItem objects of each of your annotations and then a custom method like below would be able to get the route info between two MapItem objects.
Note - if you don't have MapItems then you can create them just using the coordinates of each of your annotations, like so
ley myCoordinates CLLocationCoordinate2D(latitude: 25.647399800, longitude: -100.334304500)
let myPlacemark = MKPlacemark(coordinate: myCoordinates)
let myMapItem = MKMapItem(placemark: myPlacemark)
Define an MKRoute variable globally in your class (or ViewController class). This var will hold the calculated Route information between two points.
var route: MKRoute!
and then
func getDistanceToDestination(srcMapItem srcmapItem: MKMapItem, destMapItem destmapItem: MKMapItem){
let request = MKDirectionsRequest() //create a direction request object
request.source = srcmapItem //this is the source location mapItem object
request.destination = destmapItem //this is the destination location mapItem object
request.transportType = MKDirectionsTransportType.automobile //define the transportation method
let directions = MKDirections(request: request) //request directions
directions.calculate { (response, error) in
guard let response = response else {
print(error.debugDescription)
return
}
self.route = response.routes[0] //get the routes, could be multiple routes in the routes[] array but usually [0] is the best route
}
}
Usage would be
self.getDistanceToDestination(srcMapItem: yourSourceMapItemObj, destMapItem: yourDestinationMapitemObj)
where yourSourceMapItemObj and yourDestinationMapitemObj are two MapItem objects aka source and destination points.
And then you can access the distance using self.route.distance to get the distance of the first best route returned by MKRoute. There are a whole bunch of other properties for the MKRoute object route which you can use as well to display/calculate other things, and I encourage you to take a look at those too. You can use the function above to also draw a ployLine i.e. a line showing the route between the two locations in the MapView just by adding self.mapView.add(self.route.polyline) in the end of the custom method above and then use the below MKMapViewDelegate function below to render the polyline.
func mapView(_ mapView: MKMapView, rendererFor overlay: MKOverlay) -> MKOverlayRenderer {
let linerenderer = MKPolylineRenderer(overlay: self.route.polyline)
linerenderer.strokeColor = .blue
linerenderer.lineWidth = 3.5
return linerenderer
}
And finally, make sure your class (or your class extension) complies to CLLocationManagerDelegate and MKMapViewDelegate protocols and mapview delegate pointed to self (which I assume you already do) in order for everything above to work.
Its easy try my code below.
Don't forget to import CoreLocation or MapKit, hope it helps you
func calculateDistancefrom(sourceLocation: MKMapItem, destinationLocation: MKMapItem, doneSearching: #escaping (_ expectedTravelTim: TimeInterval) -> Void) {
let request: MKDirectionsRequest = MKDirectionsRequest()
request.source = sourceLocation
request.destination = destinationLocation
request.requestsAlternateRoutes = true
request.transportType = .automobile
let directions = MKDirections(request: request)
directions.calculate { (directions, error) in
if var routeResponse = directions?.routes {
routeResponse.sort(by: {$0.expectedTravelTime <
$1.expectedTravelTime})
let quickestRouteForSegment: MKRoute = routeResponse[0]
doneSearching(quickestRouteForSegment.distance)
}
}
}
func getDistance(lat: Double, lon: Double, completionHandler: #escaping (_ distance: Int) -> Void) {
let destinationItem = MKMapItem(placemark: MKPlacemark(coordinate: CLLocationCoordinate2DMake(lat, lon)))
guard let currentLocation = self.locationManager?.location else { return }
let sourceItem = MKMapItem(placemark: MKPlacemark(coordinate: currentLocation.coordinate))
self.calculateDistancefrom(sourceLocation: sourceItem, destinationLocation: destinationItem, doneSearching: { distance in
completionHandler(distance)
})
}
//Thereafter get the distance in meters by calling
self.getDistance(lat: yourLat, lon: YourLon) { distance in
}
//you can divide by 1000 to convert to KM... .etc
Using MapKit & Swift 5
Calculate distance between two location location
Sample Function : I have tested in Google Map as well as Apple Map
let startLocation : CLLocation = CLLocation.init(latitude: 23.0952779, longitude: 72.5274129)
let endLocation : CLLocation = CLLocation.init(latitude: 23.0981711, longitude: 72.5294229)
let distance = startLocation.distance(from: endLocation)
self.getDistance(departureDate: Date().adjust(hour: 8, minute: 0, second: 0, day: 0, month: 0), arrivalDate: Date().adjust(hour: 8, minute: 10, second: 0, day: 0, month: 0), startLocation: startLocation, endLocation: endLocation) { (distanceInMeters) in
print("fake distance: \(distance)")
let fakedistanceInMeter = Measurement(value: distance, unit: UnitLength.meters)
let fakedistanceInKM = fakedistanceInMeter.converted(to: UnitLength.kilometers).value
let fakedistanceInMiles = fakedistanceInMeter.converted(to: UnitLength.miles).value
print("fakedistanceInKM :\(fakedistanceInKM)")
print("fakedistanceInMiles :\(fakedistanceInMiles)")
print("actualDistance : \(distanceInMeters)")
let distanceInMeter = Measurement(value: distanceInMeters, unit: UnitLength.meters)
let distanceInKM = distanceInMeter.converted(to: UnitLength.kilometers).value
let distanceInMiles = distanceInMeter.converted(to: UnitLength.miles).value
print("distanceInKM :\(distanceInKM)")
print("distanceInMiles :\(distanceInMiles)")
}
Use of functions
self.getDistance(departureDate: trip.departure.dateTime, arrivalDate: trip.arrival.dateTime, startLocation: startLocation, endLocation: endLocation) { (actualDistance) in
print("actualDistance : \(actualDistance)")
}
I am improved above function and added code here, I hope it will help someone.
func calculateDistancefrom(departureDate: Date, arrivalDate: Date, sourceLocation: MKMapItem, destinationLocation: MKMapItem, doneSearching: #escaping (_ distance: CLLocationDistance) -> Void) {
let request: MKDirections.Request = MKDirections.Request()
request.departureDate = departureDate
request.arrivalDate = arrivalDate
request.source = sourceLocation
request.destination = destinationLocation
request.requestsAlternateRoutes = true
request.transportType = .automobile
let directions = MKDirections(request: request)
directions.calculate { (directions, error) in
if var routeResponse = directions?.routes {
routeResponse.sort(by: {$0.expectedTravelTime <
$1.expectedTravelTime})
let quickestRouteForSegment: MKRoute = routeResponse[0]
doneSearching(quickestRouteForSegment.distance)
}
}
}
func getDistance(departureDate: Date, arrivalDate: Date, startLocation : CLLocation, endLocation : CLLocation, completionHandler: #escaping (_ distance: CLLocationDistance) -> Void) {
let destinationItem = MKMapItem(placemark: MKPlacemark(coordinate: startLocation.coordinate))
let sourceItem = MKMapItem(placemark: MKPlacemark(coordinate: endLocation.coordinate))
self.calculateDistancefrom(departureDate: departureDate, arrivalDate: arrivalDate, sourceLocation: sourceItem, destinationLocation: destinationItem, doneSearching: { distance in
completionHandler(distance)
})
}