How to start map application on iPhone from objective c - iphone

Question

I develop app for IOS 6.
I want to run maps application and pass it start and destination so I can navigate user.
UIApplication *app = [UIApplication sharedApplication];
NSString *coordinates = [NSString stringWithFormat:#"http://maps.google.com/maps?daddr=%f,%f&saddr=%f,%f", ...];
[app openURL:[NSURL URLWithString: coordinates]];
I thought that this code will open google maps in browser on simulator, and maps app on device, but on the device it runs browser google map.
Am i doing something wrong?

Answer 1

If you're not aware, Apple no longer uses Google maps so you have to use their new URL scheme for the Apple maps.
(Note: if you're supporting iOS 5, then you should use both. The google maps scheme and apple maps)
Here is an example query http://maps.apple.com/maps?daddr=San+Francisco,+CA&saddr=cupertino
Here is the documentation for it: Apple Maps URL Schemes

Answer 2

Another option, if you have an MKPlacemark object:
// placemark is your MKPlacemark object
MKMapItem* destination = [[MKMapItem alloc] initWithPlacemark:placemark];
if([destination respondsToSelector:#selector(openInMapsWithLaunchOptions:)])
{
// Using iOS6 native maps app
[destination openInMapsWithLaunchOptions:#{MKLaunchOptionsDirectionsModeKey:MKLaunchOptionsDirectionsModeDriving}];
}
else
{
// Using iOS5 which has the Google Maps application
NSString *currentLocation = #"Current%20Location";
NSString *routeString = [NSString stringWithFormat:#"%#saddr=%#&daddr=%#", kMapsBaseUrl, currentLocation, address.mapAddress];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:routeString]];
}

Answer 3

This is what I use on iOS 8.
First I try to open the url #"comgooglemaps://", if it works this means that they installed the google maps app, so then I can open the app.
If it doesn't work then the app isn't there, just open google maps in Safari.
In both cases it passes the query q=London.
if([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:#"comgooglemaps://"]]){ //open google maps app
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"comgooglemaps://?q=London"]];
}
else{ //open browser
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"http://maps.google.com/maps?q=London"]];
}

Answer 4

-(void)openAddressOnNativeMapApp{
NSString *addressOnMap = #"cupertino"; //place name
NSString* addr = [NSString stringWithFormat:#"http://maps.apple.com/?q=%#",addressOnMap];
NSURL* url = [[NSURL alloc] initWithString:[addr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
[[UIApplication sharedApplication] openURL:url];
}
For More Info visit Apple Doc for open native map App