Get gps location of a photo

Question

I know how to get the current GPS location of a mobile phone. I also know how to save the GPS location to the photo when you take it. (Camera option Samsung galaxy s2).

Answer 1

josnidhin made this answer possible, so be sure to give him credit too :)

Here we go:

import android.media.ExifInterface;

exif = new ExifInterface(filePath);
String lat = ExifInterface.TAG_GPS_LATITUDE;
String lat_data = exif.getAttribute(lat);

After that, lat_data will be something like: 51/1,58/1,32/1

This is the same as: 51, 58, 32. (typing this in google maps will give bad result)

To get the gps coordinates of this you need to do some math, here it comes:

1. Calculate the total number of seconds:
   58′32″ = (58*60 + 32) = 3512 seconds.
2. The fractional part is total number of seconds divided by 3600:
   3512 / 3600 = ~0.975556
3. Add fractional degrees to whole degrees to produce the final result:
   51 + 0.975556 = 51.975556
4. If it is a West longitude coordinate, negate the result. (it isn't this time)
5. answer: 51.975556

This is also the same when you with TAG_GPS_LONGITUDE

Answer 2

I think the geotag is in the EXIF data of the photo taken. Find a suitable EXIF data reader which will help you extract the data you want.