How can I get directions to the iPhone iOS 6 App in Xcode A to B?

Question

I want to update an application from iOS <6 that uses Google Maps. My application has many contacts on the map, and when a user clicks on one of them, iPhone calls Maps, as a joint application, to get directions from its current location and destination using its own Maps application. With iOS 6, the same instructions (posted below) obviously open Safari instead of Google Maps. I want to write an if-loop that checks the iOS installed on the device: if <6, nothing has changed if iOS> 6 then ..... (open new Apple cards and find the direction there).

Can anybody help me?

Here's the action before iOS 6

- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control { [self.navigationController pushViewController:[[UIViewController alloc] init] animated:YES]; NSString* addr = [NSString stringWithFormat:@"http://maps.google.com/maps?daddr=%1.6f,%1.6f&saddr=Posizione attuale", view.annotation.coordinate.latitude,view.annotation.coordinate.longitude]; NSURL* url = [[NSURL alloc] initWithString:[addr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; [[UIApplication sharedApplication] openURL:url]; } 

Answer 1

I used preprocessor code like the one below to define my condition for an if loop.

 #define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending) 

Then:

 if (SYSTEM_VERSION_LESS_THAN(@"6.0")) { NSString* addr = [NSString stringWithFormat:@"http://maps.google.com/maps?daddr=%1.6f,%1.6f&saddr=Posizione attuale", view.annotation.coordinate.latitude,view.annotation.coordinate.longitude]; NSURL* url = [[NSURL alloc] initWithString:[addr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; [[UIApplication sharedApplication] openURL:url]; } else { NSString* addr = [NSString stringWithFormat:@"http://maps.apple.com/maps?daddr=%1.6f,%1.6f&saddr=Posizione attuale", view.annotation.coordinate.latitude,view.annotation.coordinate.longitude]; NSURL* url = [[NSURL alloc] initWithString:[addr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; [[UIApplication sharedApplication] openURL:url]; } 

It seems to work Bye!

Answer 2

I recommend using [MKMapItem openMapsWithItems:] instead of opening the map application via the URL in iOS 6. If you use the URL, you won’t be able to pass “Current Location” and you’ll lose the ability to make turn-by-turn navigation. MKMapItem has a specific element for the current location, which, when transferred, will open Maps using the current location as the source address, which will enable turn-by-turn navigation.

 - (void)openMapsWithDirectionsTo:(CLLocationCoordinate2D)to { Class itemClass = [MKMapItem class]; if (itemClass && [itemClass respondsToSelector:@selector(openMapsWithItems:launchOptions:)]) { MKMapItem *currentLocation = [MKMapItem mapItemForCurrentLocation]; MKMapItem *toLocation = [[MKMapItem alloc] initWithPlacemark:[[[MKPlacemark alloc] initWithCoordinate:to addressDictionary:nil] autorelease]]; toLocation.name = @"Destination"; [MKMapItem openMapsWithItems:[NSArray arrayWithObjects:currentLocation, toLocation, nil] launchOptions:[NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:MKLaunchOptionsDirectionsModeDriving, [NSNumber numberWithBool:YES], nil] forKeys:[NSArray arrayWithObjects:MKLaunchOptionsDirectionsModeKey, MKLaunchOptionsShowsTrafficKey, nil]]]; [toLocation release]; } else { NSMutableString *mapURL = [NSMutableString stringWithString:@"http://maps.google.com/maps?"]; [mapURL appendFormat:@"saddr=Current Location"]; [mapURL appendFormat:@"&daddr=%f,%f", to.latitude, to.longitude]; [[UIApplication sharedApplication] openURL:[NSURL URLWithString:[mapURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]]; } } 

Answer 3

The accepted answer did not help me. The current location must be in the correct language, and the ios6 version is not loaded correctly. The following worked for me.

 NSString *destinationAddress = @"Amsterdam"; Class itemClass = [MKMapItem class]; if (itemClass && [itemClass respondsToSelector:@selector(openMapsWithItems:launchOptions:)]) { CLGeocoder *geocoder = [[CLGeocoder alloc] init]; [geocoder geocodeAddressString:destinationAddress completionHandler:^(NSArray *placemarks, NSError *error) { if([placemarks count] > 0) { MKPlacemark *placeMark = [[MKPlacemark alloc] initWithPlacemark:[placemarks objectAtIndex:0]]; MKMapItem *mapItem = [[MKMapItem alloc]initWithPlacemark:placeMark]; MKMapItem *mapItem2 = [MKMapItem mapItemForCurrentLocation]; NSArray *mapItems = @[mapItem, mapItem2]; NSDictionary *options = @{ MKLaunchOptionsDirectionsModeKey:MKLaunchOptionsDirectionsModeDriving, MKLaunchOptionsMapTypeKey: [NSNumber numberWithInteger:MKMapTypeStandard], MKLaunchOptionsShowsTrafficKey:@YES }; [MKMapItem openMapsWithItems:mapItems launchOptions:options]; } else { //error nothing found } }]; return; } else { NSString *sourceAddress = [LocalizedCurrentLocation currentLocationStringForCurrentLanguage]; NSString *urlToOpen = [NSString stringWithFormat:@"http://maps.google.com/maps?saddr=%@&daddr=%@", [sourceAddress stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding], [destinationAddress stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; [[UIApplication sharedApplication] openURL:[NSURL URLWithString:urlToOpen]]; } 

For ios5, I use LocalizedCurrentLocation from this post http://www.martip.net/blog/localized-current-location-string-for-iphone-apps

For ios6, I use CLGeocoder to get the label, and then open the map with it and the current location.

Remember to add CoreLocation.framework and MapKit.framework

Answer 4

Swift 2.0 .

I have not yet found a comprehensive answer.

 /** Try to open google maps with navigation feature and with given coordinates - parameter latitude: destination latitude - parameter longitude: destination longitude - parameter destinationName: destination name - parameter completion: completion callback */ static func openGoogleMapsNavigation(latitude: Double, longitude: Double, destinationName: String, completion: ((error: NSError?) -> (Void))?) { let directionRequest: MKDirectionsRequest = MKDirectionsRequest() let destination = Utils.createMapItem(name: destinationName, latitude: latitude, longitude: longitude) directionRequest.source = MKMapItem.mapItemForCurrentLocation() directionRequest.destination = destination directionRequest.transportType = MKDirectionsTransportType.Automobile directionRequest.requestsAlternateRoutes = true let directions: MKDirections = MKDirections(request: directionRequest) directions.calculateDirectionsWithCompletionHandler { (response: MKDirectionsResponse?, error: NSError?) -> Void in if error == nil { destination.openInMapsWithLaunchOptions([ MKLaunchOptionsDirectionsModeKey : MKLaunchOptionsDirectionsModeDriving]) } completion?(error: error) } } 

Where I have this utility method:

 static func createMapItem(name name: String, latitude: Double, longitude: Double) -> MKMapItem { let coordinates = CLLocationCoordinate2DMake(latitude, longitude) let placemark = MKPlacemark(coordinate: coordinates, addressDictionary: nil) let mapItem = MKMapItem(placemark: placemark) mapItem.name = name return mapItem } 

Answer 5

For people looking for an answer in swift -

  //MARK:- ViewDidLoad let directionRequest = MKDirectionsRequest() directionRequest.source = self.sourceMapitem directionRequest.destination = self.destinationMapitem directionRequest.transportType = .Automobile // where sourceMapitem and destinationMapitem are MKMapItem let directions = MKDirections(request: directionRequest) directions.calculateDirectionsWithCompletionHandler { (response, error) -> Void in if response != nil { let route = response!.routes[0] self.myMapView.addOverlay((route.polyline), level: MKOverlayLevel.AboveRoads) print("OVER") } else{ print(" ERROR: \(error)") } } //MARK:- DefineFunctions func showRoute(response: MKDirectionsResponse) { for route in response.routes { myMapView.addOverlay(route.polyline, level: MKOverlayLevel.AboveRoads) } }