Calculating distance travelled as the user moves

Question

I need to calculate distance as the user moves in android. I have the starting point coordinates and can get the user's current location. How should I calculate distance. I don't think I can call GoogleDistance Api as my application would be a real time application and calling this API would be extremely overhead or should calling GoogleDirectionsAPI would work fine.

Also I would like to test the distance travelled. How should I do it? Is there some way of sampling the data or do I really need to go out in the real world and actually travel and then test my application?

Edited: I want the distance travelled by the user and not the straight line distance between the points

http://stackoverflow.com/questions/27657437/finding-point-between-two-geo-locations-of-beacons/27657754#27657754 — Jamil, Jan 01 '15 at 13:44

score 11 · Answer 1 · answered Feb 01 '17 at 01:06

I hope following will help: In my app i started collecting lat longs after every 3fts (I set 3ft just for testing). I collected lat longs as follows:

Now I started calculating distance from point 1 to 2 and then 2 to 3 and then 3 to 4 and so on. After summing up I got total distance from 1 to 5. I used following functions to calculate distance:

    public double GetDistanceFromLatLonInKm(double lat1, double lon1, double lat2, double lon2)
    {
        final int R = 6371;
        // Radius of the earth in km
        double dLat = deg2rad(lat2 - lat1);
        // deg2rad below
        double dLon = deg2rad(lon2 - lon1);
        double a = Math.sin(dLat / 2) * Math.sin(dLat / 2) + Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) * Math.sin(dLon / 2) * Math.sin(dLon / 2);
        double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
        double d = R * c;
        // Distance in km
        return d;
    }
    private double deg2rad(double deg)
    {
        return deg * (Math.PI / 180);
    }

This method is calculating exact distance for me.

score 1 · Answer 2 · answered Jan 01 '15 at 13:18

You can calculate the distance between two point using the following function

double distanceBetweenTwoPoint(double srcLat, double srcLng, double desLat, double desLng) {
    double earthRadius = 3958.75;
    double dLat = Math.toRadians(desLat - srcLat);
    double dLng = Math.toRadians(desLng - srcLng);
    double a = Math.sin(dLat / 2) * Math.sin(dLat / 2)
            + Math.cos(Math.toRadians(srcLat))
            * Math.cos(Math.toRadians(desLat)) * Math.sin(dLng / 2)
            * Math.sin(dLng / 2);
    double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
    double dist = earthRadius * c;

    double meterConversion = 1609;

    return (int) (dist * meterConversion);
}

For the second Part: To use mock or sample data you can use "Fake GPS" app from the play store, which will generate mock location in your device.

Happy Coding

This is a "straight line" distance from one point to another. What he want is distance traveled. — bajicdusko, Jan 01 '15 at 13:20
He stated in the question "I have the starting point coordinates and can get the user's current location. How should I calculate distance." — BeingMIAkashs, Jan 01 '15 at 13:30
i want the distance travelled not the straight line distance between the points — androider, Jan 01 '15 at 15:37

score 0 · Answer 3 · edited May 23 '17 at 11:46

0

There are basically three ways to check the traveled distance -

By using GPS, check the coordinate between two points using distanceTo of Location class.
Using Accelerometer , you can check the movement of device using Accelerometer.
Using Step detector - this is recently updated by Android.

Hope this helps you to achieve your goal :)

edited May 23 '17 at 11:46

Community

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answered Jan 01 '15 at 13:15

Ashish Tamrakar

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Does this calculate the distance travelled by the vehicle(or user)? – androider Jan 02 '15 at 06:05
@androider - Did you find any solution to calculate the distance travelled by the vehicle without GPS – Android is everything for me Feb 22 '18 at 11:27

score 0 · Answer 4 · answered Jan 01 '15 at 13:21

For the first question . You have origin coordinates and the present user location coordinates so what you can do is google api v3 library provides a method that takes origin LatLng and destination LatLng and gives the distance . Add api v3 jar to your android build path. For the second one goto google maps and give the location details it is accurate..

Calculating distance travelled as the user moves

4 Answers4