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Description

DrawRoute

===========

DrawRoute wraps Google Directions API (https://developers.google.com/maps/documentation/directions/) using RxJava for Android so developers can download, parse and draw path on the map in very fast and flexible way (For now only JSON support).

Programming language: Kotlin
License: MIT License
Tags: Kotlin     Android     Maps     RxAndroid     RxJava     Android-library     Google Maps     Googledirection    
Latest version: v1.1-rx

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README

DrawRoute

Android Arsenal GitHub pull requests

DrawRoute wraps Google Directions API (https://developers.google.com/maps/documentation/directions/) using RxAndroid for Android. Now developers can easily Draw route on maps, can get the Estimated time of arrival and the Google suggested distance between two locations in a very easy and flexible. Note: You need to generate an API key at Google cloud platform also don't forget to enable Directions API. Enjoy!

read more on medium

How to add (gradle)

If you are using gradle: Step1: Add it in your root build.gradle at the end of repositories

allprojects {
    repositories {
        maven { url 'https://jitpack.io' }
    }
}

Step2: Add the dependency

dependencies {
    implementation 'com.github.malikdawar:drawroute:1.5'
}

Otherwise you have to use library directly in your project.

USAGE

First we have to download the path. For this we need to provide two points (start and end) and travel mode.

    val source = LatLng(31.490127, 74.316971) //starting point (LatLng)
        val destination = LatLng(31.474316, 74.316112) // ending point (LatLng)

        googleMap?.run {
            moveCameraOnMap(latLng = source) // if you want to zoom the map to any point

            //Called the drawRouteOnMap extension to draw the polyline/route on google maps
           drawRouteOnMap(
                getString(R.string.google_map_api_key), //your API key
                source = source, // Source from where you want to draw path
                destination = destination, // destination to where you want to draw path
                context = context!! //Activity context
            )
        }

If you want more control

    fun GoogleMap.drawRouteOnMap(
        mapsApiKey: String,  // YOur API key
        context: Context, //App context
        source: LatLng, //Source, from where you want to draw path
        destination: LatLng,  //Destination, to where you want to draw path
        color: Int = context.getColorCompat(R.color.pathColor),  //color, path/route/polygon color, specify the color if you want some other color other then default one
        markers: Boolean = true, //If you want markers on source and destination, by default it is true
        boundMarkers: Boolean = true, //If you want to bound the markers(start and end points) in screen with padding, by default it is true 
        polygonWidth: Int = 13, // route/path width, by default it is 13
        travelMode: TravelMode = TravelMode.DRIVING //Travel mode, by default it is DRIVING
    )

enum class TravelMode {
    DRIVING, WALKING, BICYCLING, TRANSIT
}

Route Estimations

(Kotlin)

In your Activity/Fragmant


class YourFragment : Fragment(), OnMapReadyCallback {


    //if you only want the Estimates (Distance & Time of arrival)
        getTravelEstimations(
            mapsApiKey = getString(R.string.google_map_api_key),
            source = source,
            destination = destination
        ) { estimates ->
            estimates?.let {
                //Google Estimated time of arrival
                Log.d(TAG, "ETA: ${it.duration?.text}, ${it.duration?.value}")
                //Google suggested path distance
                Log.d(TAG, "Distance: ${it.distance?.text}, ${it.distance?.text}")

            } ?: Log.e(TAG, "Nothing found")
        }


    //if you only want to draw a route on maps and also need the ETAs
        //Called the drawRouteOnMap extension to draw the polyline/route on google maps
            drawRouteOnMap(
                getString(R.string.google_map_api_key),
                source = source,
                destination = destination,
                context = context!!,
            ) { estimates ->
                estimates?.let {
                    //Google Estimated time of arrival
                    Log.d(TAG, "ETA: ${it.duration?.text}, ${it.duration?.value}")
                    //Google suggested path distance
                    Log.d(TAG, "Distance: ${it.distance?.text}, ${it.distance?.text}")

                } ?: Log.e(TAG, "Nothing found")
            }

And taking all together:

(Kotlin)


class RouteFragment : Fragment(), OnMapReadyCallback {

    private var googleMap: GoogleMap? = null

    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        return inflater.inflate(R.layout.fragment_map_route, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        //initialized google maps
        val mapFragment =
            childFragmentManager.findFragmentById(R.id.mapView) as SupportMapFragment
        mapFragment.getMapAsync(this)
    }

    override fun onMapReady(p0: GoogleMap?) {
        this.googleMap = p0

        val source = LatLng(31.490127, 74.316971) //starting point (LatLng)
        val destination = LatLng(31.474316, 74.316112) // ending point (LatLng)

        //if you only want the Estimates (Distance & Time of arrival)
        getTravelEstimations(
            mapsApiKey = getString(R.string.google_map_api_key),
            source = source,
            destination = destination
        ) { estimates ->
            estimates?.let {
                //Google Estimated time of arrival
                Log.d(TAG, "ETA: ${it.duration?.text}, ${it.duration?.value}")
                //Google suggested path distance
                Log.d(TAG, "Distance: ${it.distance?.text}, ${it.distance?.text}")

            } ?: Log.e(TAG, "Nothing found")
        }


        googleMap?.run {
            //if you want to move the map on specific location
            moveCameraOnMap(latLng = source)

            //if you want to drop a marker of maps, call it
            drawMarker(location = source, context = requireContext(), title = "test marker")

            //if you only want to draw a route on maps
            //Called the drawRouteOnMap extension to draw the polyline/route on google maps
            drawRouteOnMap(
                getString(R.string.google_map_api_key),
                source = source,
                destination = destination,
                context = context!!
            )

            //if you only want to draw a route on maps and also need the ETAs
            //Called the drawRouteOnMap extension to draw the polyline/route on google maps
            drawRouteOnMap(
                getString(R.string.google_map_api_key),
                source = source,
                destination = destination,
                context = context!!,
            ) { estimates ->
                estimates?.let {
                    //Google Estimated time of arrival
                    Log.d(TAG, "ETA: ${it.duration?.text}, ${it.duration?.value}")
                    //Google suggested path distance
                    Log.d(TAG, "Distance: ${it.distance?.text}, ${it.distance?.text}")

                } ?: Log.e(TAG, "Nothing found")
            }
        }
    }

    companion object {
        var TAG = RouteFragment::javaClass.name
    }
}

(Java)


private final OnMapReadyCallback callback = googleMap -> {

        LatLng source = new LatLng(31.490127, 74.316971); //starting point (LatLng)
        LatLng destination = new LatLng(31.474316, 74.316112); // ending point (LatLng)

        //zoom/move cam on map ready
        MapExtensionKt.moveCameraOnMap(googleMap, 16, true, source);

        //draw route on map
       //If want to draw route on maps and also required the Estimates else just pass the null as a param for lambda
        MapExtensionKt.drawRouteOnMap(googleMap,
                getString(R.string.google_map_api_key),
                getContext(),
                source,
                destination,
                getActivity().getColor(R.color.pathColor),
                true, true, 13, TravelMode.DRIVING, null /*deprecated*/,
                //call the lambda if you need the estimates
                (estimates -> {
                    //Estimated time of arrival
                    Log.d("estimatedTimeOfArrival", "withUnit " + estimates.getDuration().getText());
                    Log.d("estimatedTimeOfArrival", "InMilliSec " + estimates.getDuration().getValue());

                    //Google suggested path distance
                    Log.d("GoogleSuggestedDistance", "withUnit " + estimates.getDistance().getText());
                    Log.d("GoogleSuggestedDistance", "InMilliSec " + estimates.getDistance().getValue());
                    return null;
                }));

    };


    For more please refer to the RouteFragment in sample app. Enjoy :)

Screen Shot [image](screenshot/map.jpeg)

Developed By

Malik Dawar - [email protected]

Mobin Munir