title: How to show google navigator with voice directions over your App?
body: <p>I had tried the below code but it just open the google map:</p>
  
  <pre><code>NSString *latlong = @"-56.568545,1.256281";
  NSString *url = [NSString stringWithFormat: @"http://maps.google.com/maps?ll=%@",
  [latlong stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];
  </code></pre>
  
  <p>But how to set the current location and destination location by default so the user doesnot need to type the location.and the navigator automatically get start.</p>