How to calculate distance between two locations using their longitude and latitude value

Question

Here my code I used below code to calculate the distance between two location using their latitude and longitude  It is giving wrong distance  sometimes getting right and sometimes getting irrelevant distance    We are getting lat1 and lng1 from database     getting lat2 and lng2 from GPS as below  public class MyLocationListener implements LocationListener       Override   public void onLocationChanged Location loc          lat2 loc getLatitude        lng2 loc getLongitude        String Text    My current location is      Latitud      loc getLatitude     Longitud       loc getLongitude           System out println  Lat  amp  Lang form Loc  Text         Toast makeText  getApplicationContext    Text Toast LENGTH SHORT  show            Override   public void onProviderDisabled String provider              Override   public void onProviderEnabled String provider              Override   public void onStatusChanged String provider  int status  Bundle extras                Calculating distance   double earthRadius   3958 75     double dLat   Math toRadians lat1-lat2     double dLng   Math toRadians lng1-lng2     double a   Math sin dLat 2    Math sin dLat 2                 Math cos Math toRadians lat2     Math cos Math toRadians lat1                  Math sin dLng 2    Math sin dLng 2     double c   2   Math atan2 Math sqrt a   Math sqrt 1-a      double dist   earthRadius   c

User · Answer

in build gradle   compile  com google maps android android-maps-utils 0 4    and then   public static Double distanceBetween LatLng point1  LatLng point2        if  point1    null    point2    null            return null             return SphericalUtil computeDistanceBetween point1  point2

User · Answer

Why are you writing the code for calculating the distance by yourself    Check the api s in Location class

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If you have two Location Objects Location loc1 and Location loc2 you do  float distance   loc1 distanceTo loc2     If you have longitude and latitude values you use the static distanceBetween   function      float   results   new float 1       Location distanceBetween startLatitude  startLongitude      endLatitude  endLongitude  results       float distance   results 0

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Get KM from lat long   public static float getKmFromLatLong float lat1  float lng1  float lat2  float lng2               Location loc1   new Location                  loc1 setLatitude lat1               loc1 setLongitude lng1               Location loc2   new Location                  loc2 setLatitude lat2               loc2 setLongitude lng2               float distanceInMeters   loc1 distanceTo loc2               return distanceInMeters 1000

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Try This below method code to get the distance in meter between two location  hope it will help for you   public static double distance LatLng start  LatLng end       try           Location location1   new Location  locationA            location1 setLatitude start latitude           location1 setLongitude start longitude           Location location2   new Location  locationB            location2 setLatitude end latitude           location2 setLongitude end longitude           double distance   location1 distanceTo location2           return distance        catch  Exception e             e printStackTrace               return 0

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You should use Haversine Distance Formulas   Haversine Formulas used to calculate the great  distance between two points on the earth       public void haversine double lat1  double lon1  double lat2  double lon2     double Rad   6372 8    Earth s Radius In kilometers                TODO Auto-generated method stub             double dLat   Math toRadians lat2 - lat1               double dLon   Math toRadians lon2 - lon1               lat1   Math toRadians lat1               lat2   Math toRadians lat2               double a   Math sin dLat   2    Math sin dLat   2    Math sin dLon   2    Math sin dLon   2    Math cos lat1    Math cos lat2               double c   2   Math asin Math sqrt a                haverdistanceKM   Rad   c

User · Answer

There is an android location Location distanceBetween   method which does this quite well   Android Developer Docs  Location

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Try this code   startPoint distanceTo endPoint  function returns the distance between those places in meters   Location startPoint new Location  locationA    startPoint setLatitude 17 372102   startPoint setLongitude 78 484196    Location endPoint new Location  locationA    endPoint setLatitude 17 375775   endPoint setLongitude 78 469218    double distance startPoint distanceTo endPoint     here  distance  is our required result in Meters  I hope it will work for android

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private float distanceFrom in Km float lat1  float lng1  float lat2  float lng2          if  lat1   null    lng1   null    lat2   null    lng2   null                          return null           double earthRadius   6371000    meters     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        float dist    float   earthRadius   c        return dist

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private String getDistanceOnRoad double latitude  double longitude          double prelatitute  double prelongitude        String result in kms           String url    http   maps google com maps api directions xml origin                 latitude         longitude     amp destination     prelatitute                     prelongitude     amp sensor false amp units metric       String tag        text         HttpResponse response   null      try           HttpClient httpClient   new DefaultHttpClient            HttpContext localContext   new BasicHttpContext            HttpPost httpPost   new HttpPost url           response   httpClient execute httpPost  localContext           InputStream is   response getEntity   getContent            DocumentBuilder builder   DocumentBuilderFactory newInstance                    newDocumentBuilder            Document doc   builder parse is           if  doc    null                NodeList nl              ArrayList args   new ArrayList                for  String s   tag                    nl   doc getElementsByTagName s                   if  nl getLength    gt  0                        Node node   nl item nl getLength   - 1                       args add node getTextContent                       else                       args add   -                                                 result in kms   String format   s   args get 0                    catch  Exception e            e printStackTrace              return result in kms

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Here getting distance in miles  mi  private double distance double lat1  double lon1  double lat2  double lon2        double theta   lon1 - lon2      double dist   Math sin deg2rad lat1                          Math sin deg2rad lat2                         Math cos deg2rad lat1                         Math cos deg2rad lat2                         Math cos deg2rad theta        dist   Math acos dist       dist   rad2deg dist       dist   dist   60   1 1515      return  dist      private double deg2rad double deg        return  deg   Math PI   180 0      private double rad2deg double rad        return  rad   180 0   Math PI

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public float getMesureLatLang double lat double lang         Location loc1   new Location          loc1 setLatitude getLatitute       current latitude     loc1 setLongitude getLangitute      current  Longitude      Location loc2   new Location          loc2 setLatitude lat       loc2 setLongitude lang        return loc1 distanceTo loc2        return distance getLatitute   getLangitute   lat lang

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Use the below method for calculating the distance of two different locations   public double getKilometers double lat1  double long1  double lat2  double long2     double PI RAD   Math PI   180 0   double phi1   lat1   PI RAD   double phi2   lat2   PI RAD   double lam1   long1   PI RAD   double lam2   long2   PI RAD   return 6371 01   acos sin phi1    sin phi2    cos phi1    cos phi2    cos lam2 - lam1

[android] How to calculate distance between two locations using their longitude and latitude value

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