Calculate distance between two android coordinates

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Calculate distance between two android coordinates

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#1 by (2 votes)
#2 by (1 votes)

1

I would like to know how I can find the distance between 2 coordinates in kilometers by car, I am using the google maps API. I appreciate any contribution.

android

asked by Andrey Herrera 22.10.2016 в 12:38

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2 answers

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score 2 · Answer 1

Using GoogleMaps distanceTo function

Googlemaps has the function distanceTo official documentation of Location

Example:

Location locationA = new Location("punto A");

locationA.setLatitude(latA);
locationA.setLongitude(lngA);

Location locationB = new Location("punto B");

locationB.setLatitude(latB);
locationB.setLongitude(lngB);

float distance = locationA.distanceTo(locationB);

The value returned is in meters.

Using CalculationByDistance

Or you can try that function, extracted from the answer SO

public double CalculationByDistance(LatLng StartP, LatLng EndP) {
        int Radius = 6371;// radio de la tierra en  kilómetros
        double lat1 = StartP.latitude;
        double lat2 = EndP.latitude;
        double lon1 = StartP.longitude;
        double lon2 = EndP.longitude;
        double dLat = Math.toRadians(lat2 - lat1);
        double dLon = Math.toRadians(lon2 - lon1);
        double a = Math.sin(dLat / 2) * Math.sin(dLat / 2)
                + Math.cos(Math.toRadians(lat1))
                * Math.cos(Math.toRadians(lat2)) * Math.sin(dLon / 2)
                * Math.sin(dLon / 2);
        double c = 2 * Math.asin(Math.sqrt(a));
        double valueResult = Radius * c;
        double km = valueResult / 1;
        DecimalFormat newFormat = new DecimalFormat("####");
        int kmInDec = Integer.valueOf(newFormat.format(km));
        double meter = valueResult % 1000;
        int meterInDec = Integer.valueOf(newFormat.format(meter));
        Log.i("Radius Value", "" + valueResult + "   KM  " + kmInDec
                + " Meter   " + meterInDec);

        return Radius * c;
    }

score 1 · Answer 2

I recommend using the Location class of android, you have already implemented a method for that

Location location = new Location("localizacion 1");
location.setLatitude(0.00000);  //latitud
location.setLongitude(0.00000); //longitud 
Location location2 = new Location("localizacion 2");
location2.setLatitude(0.00000);  //latitud
location2.setLongitude(0.00000); //longitud 
double distance = location.distanceTo(location2);