How to open a apple maps application with directions from my ios application

Question

My aim is to open a map application from ios application with directions, I am able to open maps application but it is not showing directions, i have written the code as follows

Answer 1

If you mean taking the user to the maps application based on two points, then you can do it like this:

Create an NSURL that looks like this:

NSURL *URL = [NSURL URLWithString:@"http://maps.google.com/maps?saddr=%f,%f&daddr=%f,%f"];

You plug in your starting address and destination (in lat. and long.) appropriately. Tell your application to open the URL

[[UIApplication sharedApplication] openURL:URL];

It should take you to the maps application automatically!