Travel Distance between two Lat and Long

Question

I am looking to calculate and give the distance between two sets of Lat and Long for travel on Road.

I have had a look at the Google\'s Directions and Distance Matrix A

Answer 1

It give the distance between two locations.

First you need to get latitude, longitude of source and same for destination. Pass these in this method.

It return you distance between them.

public float distanceFrom(float lat1, float lng1, float lat2, float lng2) {
    double earthRadius = 3958.75;
    double dLat = Math.toRadians(lat2-lat1);
    double dLng = Math.toRadians(lng2-lng1);
    double a = Math.sin(dLat/2) * Math.sin(dLat/2) + Math.cos(Math.toRadians(lat1)) * Math.cos(Math.toRadians(lat2)) * Math.sin(dLng/2) * Math.sin(dLng/2);
    double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
    double dist = earthRadius * c;
    int meterConversion = 1609;
    return new Float(dist * meterConversion).floatValue();
}