Route between two places using Google Maps iOS SDK.

Its very interesting to have the Google maps 

Firstly. We have to install the pods of Google maps.

So, follow the steps for installing the pods of Google maps on developers.google.com

1. Create the pod file as on the site.

2. In Podfile add the pod of Alamofire and SwiftyJSON.

3. Save the pod file.
    pod 'GoogleMaps'

    pod 'GooglePlaces'

    pod 'Alamofire', '~> 4.2.0'

    pod 'SwiftyJSON'

4. Install the pods.

Here is the code for route.

import UIKit

import GoogleMaps

import GooglePlaces

import Alamofire

import SwiftyJSON

class GoogleViewController: UIViewController,GMSMapViewDelegate {

    @IBOutlet weak var googleView: GMSMapView!

    

    // AIzaSyC907BQBnrZK0UjA2zARtE6Mq7L__yqw5Q

    override func viewDidLoad() {

        super.viewDidLoad()

        GMSServices.provideAPIKey("AIzaSyC907BQBnrZK0UjA2zARtE6Mq7L__yqw5Q")

        GMSPlacesClient.provideAPIKey("AIzaSyC907BQBnrZK0UjA2zARtE6Mq7L__yqw5Q")

        

        

        // Create a GMSCameraPosition that tells the map to display the

       

        let camera = GMSCameraPosition.camera(withLatitude: 28.524555,

                                              longitude: 77.275111,

                                              zoom: 10.0,

                                              bearing: 30,

                                              viewingAngle: 40)

        //Setting the googleView

        self.googleView.camera = camera

        self.googleView.delegate = self

        self.googleView?.isMyLocationEnabled = true

        self.googleView.settings.myLocationButton = true

        self.googleView.settings.compassButton = true

        self.googleView.settings.zoomGestures = true

        self.googleView.animate(to: camera)

        self.view.addSubview(self.googleView)

        

        //Setting the start and end location

        let origin = "\(28.524555),\(77.275111)"

        let destination = "\(28.643091),\(77.218280)"

        

        

        let url = "https://maps.googleapis.com/maps/api/directions/json?origin=\(origin)&destination=\(destination)&mode=driving"

        

        //Rrequesting Alamofire and SwiftyJSON

        Alamofire.request(url).responseJSON { response in

            print(response.request as Any)  // original URL request

            print(response.response as Any) // HTTP URL response

            print(response.data as Any)     // server data

            print(response.result)   // result of response serialization

            

            let json = JSON(data: response.data!)

            let routes = json["routes"].arrayValue

            

            for route in routes

            {

                let routeOverviewPolyline = route["overview_polyline"].dictionary

                let points = routeOverviewPolyline?["points"]?.stringValue

                let path = GMSPath.init(fromEncodedPath: points!)

                let polyline = GMSPolyline.init(path: path)

                polyline.strokeColor = UIColor.blue

                polyline.strokeWidth = 2

                polyline.map = self.googleView

            }

        }

        

         // Creates a marker in the center of the map.

        let marker = GMSMarker()

        marker.position = CLLocationCoordinate2D(latitude: 28.524555, longitude: 77.275111)

        marker.title = "Mobiloitte"

        marker.snippet = "India"

       marker.map = googleView

        

        //28.643091, 77.218280

        let marker1 = GMSMarker()

        marker1.position = CLLocationCoordinate2D(latitude: 28.643091, longitude: 77.218280)

        marker1.title = "NewDelhi"

        marker1.snippet = "India"

        marker1.map = googleView

       

    }

    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

        // Dispose of any resources that can be recreated.

    }

    

    //Drawing straight line between two points.

    

//    func draw() {

//        let path = GMSMutablePath()

//        path.addLatitude(28.524555, longitude:77.275111) //Mobiloitte

//        path.addLatitude(28.643091, longitude:77.218280) // New Delhi

//        //        path.addLatitude(21.291, longitude:-157.821) // Hawaii

//        //        path.addLatitude(37.423, longitude:-122.091) // Mountain View

//        

//        let polyline = GMSPolyline(path: path)

//        polyline.strokeColor = .blue

//        polyline.strokeWidth = 3.0

//        polyline.map = self.googleView

//        

//

//    }

   

}