Question

The following code opens the Maps app in the right position and with the right zoom, but how can I make Maps drop a pin at that exact position?

    [[UIApplication sharedApplication] openURL: [NSURL URLWithString:
                                             [NSString stringWithFormat:@"http://maps.google.com/maps?ll=%f,%f&z=%d",
                                              self.latitude,
                                              self.longitude,
                                              17]] ];

Answer 1

Try a query based link:

http://maps.google.com/maps?q=asdsad@%f,%f&z=%d

Example:

http://maps.google.com/maps?q=aplace@12,13&z=5