How to get straight distance between two location in android?

Question

First read Question carefully ...

I need straight distance, not by walking,car,or etc.

Take a look to this image which given be

Answer 1

Distance you find with following code. You just need to get two geoPoint's latitude and longitude. and use that in following calculation to get distance.

 R = 6371; // km
 d = Math.acos(Math.sin(lat1)*Math.sin(lat2) + 
              Math.cos(lat1)*Math.cos(lat2) *
              Math.cos(lon2-lon1)) * R;

That will be return distance after all calculation.

R is the radius of surface in KM, need to use in calculation and you try this. I hope it is useful for you.