Iphone – How to get Direction on an iPhone iOS 6 App in Xcode from A to B

google mapsios6iphonemkmapviewxcode

I want to update an app from iOS < 6 that uses Google Maps. My app has a lot of pins on a map, and, when a user taps over one of them, the iPhone call Maps like a shared application to get direction from his current location and the destination with the native Maps App. With iOS 6, the same instructions (posted below) obviously open Safari instead Google Maps. I want to write an if-cycle that checks the iOS installed on the device: if < 6, nothing changed, if iOS > 6 then….. (open new apple maps and get direction there).

Someone can help me please?

Here 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];



}

Best Answer

I recommend using [MKMapItem openMapsWithItems:] instead of opening the maps app via a URL in iOS 6. If you use a URL, you will not be able to pass "Current Location" and will lose the ability to do turn-by-turn navigation. MKMapItem has a specific item for current location that, when passed, will open Maps using Current Location as the source address thus enabling 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]]];
    }
}
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