start navigating to position which is stored in database

Question

I have an application where I am getting the latitude and longitude coordinates.

I want , when to press a button to start navigating to that position .

Now ,

Answer 1

While storing the lat and long store it in this way...

String mylocation=latitude + ":" + longitude;

And while retriving it

String latitude = mylocation.subString(0, myLocation.indexOf(":") -  1 );
String longitude = mylocation.subString(myLocation.indexOf(":"));

and pass it as

j.putExtra("lon", longitude);
j.putExtra("lat", latitude);