Gettting Different Distance When Using the Google Map and User defined Function

I want to get the Distance between two latitude and longitude in meter / km . So i am using the below function . It gives me the different result than the google Map. Can you help me to solve my problem ? i dont understand What is the Problem ? Code ``` float[] results = {0}; android.location.Location.distanceBetween(lat1, lon1, lat2, lon2, results); ``` Current Latitude = `23.012281666666663` Current Longitude = `72.51798333333333` Destination Latitude = `23.1120487` Destination Latitude = `72.5766759` It gives this Result = 12579.679 in Meter, while in google map it gives this result = 17.9 Km I do not understand why this two gives the different result.