# Calculate distance between two android coordinates

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.

asked by Andrey Herrera 22.10.2016 в 12:38
source

2

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) {
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(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);

}
``````

1

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);
``````