As the title states I would like to open the native maps app in the ios device from within my own app, by pressing a button. currently I have used an MKmapview
that displays a simple pin with lat/long taken from a json
file.
the code is this :
- (void)viewDidLoad {
[super viewDidLoad];
}
// We are delegate for map view
self.mapView.delegate = self;
// Set title
self.title = self.location.title;
// set texts...
self.placeLabel.text = self.location.place;
self.telephoneLabel.text = self.location.telephone;
self.urlLabel.text = self.location.url;
**// Make a map annotation for a pin from the longitude/latitude points
MapAnnotation *mapPoint = [[MapAnnotation alloc] init];
mapPoint.coordinate = CLLocationCoordinate2DMake([self.location.latitude doubleValue], [self.location.longitude doubleValue]);
mapPoint.title = self.location.title;**
// Add it to the map view
[self.mapView addAnnotation:mapPoint];
// Zoom to a region around the pin
MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(mapPoint.coordinate, 500, 500);
[self.mapView setRegion:region];
}`
When you touch the pin an info box appears with a title and an info button.
this is the code :
#pragma mark - MKMapViewDelegate
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation {
MKPinAnnotationView *view = nil;
static NSString *reuseIdentifier = @"MapAnnotation";
// Return a MKPinAnnotationView with a simple accessory button
view = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:reuseIdentifier];
if(!view) {
view = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:reuseIdentifier];
view.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
view.canShowCallout = YES;
view.animatesDrop = YES;
}
return view;
}
I want to make a method that opens the maps app with directions from the Current users location to the mapPoint above , when clicking the button in the info box above. Is that possible? Also Can I customize the look of this button? (i mean like putting a different image to the button to make it look like "press me for direction kinda" ).
Sorry if this a stupid question, but this is my first ios app and Obj-c is a totally new language to me.
thanks for all the replies in advance.
You init a button and add action to button:
Objective-C Code
NSString* directionsURL = [NSString stringWithFormat:@"http://maps.apple.com/?saddr=%f,%f&daddr=%f,%f",self.mapView.userLocation.coordinate.latitude, self.mapView.userLocation.coordinate.longitude, mapPoint.coordinate.latitude, mapPoint.coordinate.longitude];
if ([[UIApplication sharedApplication] respondsToSelector:@selector(openURL:options:completionHandler:)]) {
[[UIApplication sharedApplication] openURL:[NSURL URLWithString: directionsURL] options:@{} completionHandler:^(BOOL success) {}];
} else {
[[UIApplication sharedApplication] openURL:[NSURL URLWithString: directionsURL]];
}
with the mapPoint is where you want to direction to.
Swift3 or later
let directionsURL = "http://maps.apple.com/?saddr=35.6813023,139.7640529&daddr=35.4657901,139.6201192"
guard let url = URL(string: directionsURL) else {
return
}
if #available(iOS 10.0, *) {
UIApplication.shared.open(url, options: [:], completionHandler: nil)
} else {
UIApplication.shared.openURL(url)
}
Note that saddr
, daddr
is urlencoded string of location name or location coordinate (about encode URL look at here).
directionsURL
example:
// directions with location coordinate
"http://maps.apple.com/?saddr=35.6813023,139.7640529&daddr=35.4657901,139.6201192"
// or directions with location name
"http://maps.apple.com/?saddr=Tokyo&daddr=Yokohama"
// or directions from current location to destination location
"http://maps.apple.com/?saddr=Current%20Location&daddr=Yokohama"
More options parameters (like transport type, map type ...) look at here