Google Maps iOS SDK, Getting Directions between 2

Question

While I am using Google Maps SDK, I am trying to get driving direction between two locations on iOS. I know we can do this using two methods:-

1.) Using URL Scheme, for which it is necessary that Google Maps App is installed on your device.

2.) Using Directions API, via Request-Response and then parsing the JSON. Displaying markers to show the direction.

Now, my question is there any other way by which I can do this on iOS? I need to show the direction from my current location to a particular location of which i have the Lat/Long.

I mean is it really not possible to simply pass 2 location as parameter and Google Maps SDK, will give me the directions?

Thanks,

Answer 1

I had done it as it also shows PINS DISTANCE AND DURATION on map with DIRECTION ROUTE. But dont forget to set your GOOGLE DIRECTION API TO ENABLED in your GOOGLE DEVELOPER CONSOLE

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager.requestSerializer setCachePolicy:NSURLRequestReloadIgnoringLocalCacheData];

NSString *urlString =@"https://maps.googleapis.com/maps/api/directions/json";

 NSDictionary *dictParameters = @{@"origin" : [NSString stringWithFormat:@"%@",_sourceAdd], @"destination" : [NSString stringWithFormat:@"%@",_destinationAdd], @"mode" : @"driving", @"key":@"AIzaSyD9cWTQkAxemELVXTNUCALOmzlDv5b9Dhg"};

[manager GET:urlString parameters:dictParameters success:^(AFHTTPRequestOperation *operation, id responseObject) {


    GMSPath *path =[GMSPath pathFromEncodedPath:responseObject[@"routes"][0][@"overview_polyline"][@"points"]];
    NSDictionary *arr=responseObject[@"routes"][0][@"legs"];
    NSMutableArray *loc=[[NSMutableArray alloc]init];

    loc=[[arr valueForKey:@"start_location"]valueForKey:@"lat"];
    _sourceloc.latitude=[loc[0] doubleValue];

    loc=[[arr valueForKey:@"start_location"]valueForKey:@"lng"];
    _sourceloc.longitude=[loc[0] doubleValue];

    loc=[[arr valueForKey:@"end_location"]valueForKey:@"lat"];
    _destinationloc.latitude=[loc[0] doubleValue];

    loc=[[arr valueForKey:@"end_location"]valueForKey:@"lng"];
    _destinationloc.longitude=[loc[0] doubleValue];


    NSString *dis,*dur;
    loc=[[arr valueForKey:@"distance"]valueForKey:@"text"];
    dis=loc[0];

    loc=[[arr valueForKey:@"duration"]valueForKey:@"text"];
    dur=loc[0];


    NSString *sa,*da;
    loc=[arr valueForKey:@"start_address"];
    sa=loc[0];

    loc=[arr valueForKey:@"end_address"];
    da=loc[0];

    UIAlertView *av=[[UIAlertView alloc]initWithTitle:@"Route Info" message:[NSString stringWithFormat:@"Distance:%@ \nDuration:%@",dis,dur] delegate:nil cancelButtonTitle:@"Okay" otherButtonTitles:nil, nil];
    [av show];



    GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:_sourceloc.latitude  longitude:_sourceloc.longitude zoom:10];
    mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];

    GMSMarker *marker = [GMSMarker markerWithPosition:_sourceloc];
    marker.title=@"Source";
    marker.snippet =sa;
    marker.appearAnimation = kGMSMarkerAnimationPop;
    marker.map = mapView;


    GMSMarker *marker2 = [GMSMarker markerWithPosition:_destinationloc];
    marker2.title=@"Destination";
    marker2.snippet =da;
    marker2.appearAnimation = kGMSMarkerAnimationPop;
    marker2.map = mapView;

    GMSPolyline *singleLine = [GMSPolyline polylineWithPath:path];
    singleLine.strokeWidth = 4;
    singleLine.strokeColor = [UIColor blueColor];
    singleLine.map = mapView;

    self.view = mapView;



} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

Answer 2

These lines shows location between a given latitude / longitude and user location;

NSString *googleMapUrlString = [NSString stringWithFormat:@"http://maps.google.com/?saddr=%f,%f&daddr=%@,%@", mapView.userLocation.coordinate.latitude, mapView.userLocation.coordinate.longitude, destinationLatitude, destinationLongtitude];

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:googleMapUrlString]];

Answer 3

Create a key in google developer console make sure your project is created with App bundleID after that add the following code

NSString *KEY=@"";
NSString *Origin=@"";
NSString *Destination=@"";
NSString *str_maps=[NSString stringWithFormat:@"https://maps.googleapis.com/maps/api/directions/json?origin=%@&destination=%@&key=%@",Origin,Destination,KEY];
NSURL *url=[NSURL URLWithString:str_maps];
 NSData *dta=[NSData dataWithContentsOfURL:url];
NSDictionary *dict=(NSDictionary *)[NSJSONSerialization JSONObjectWithData:dta options:kNilOptions error:nil];
NSLog(@"%@",dict);

Answer 4

(void)viewDidLoad {
    [super viewDidLoad];

    GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:30.692408
                                                            longitude:76.767556
                                                                 zoom:14];
    GMSMapView *mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];
    mapView.myLocationEnabled = YES;

    // Creates  markers in the center of the map.


    GMSMarker *marker = [[GMSMarker alloc] init];
    marker.position = CLLocationCoordinate2DMake(30.6936659,  76.77201819999999);
    marker.title = @"Chandigarh 47c";
    marker.snippet = @"Hello World";
    marker.map = mapView;

    GMSMarker *marker1 = [[GMSMarker alloc] init];
    marker1.position = CLLocationCoordinate2DMake(30.742138,  76.818756);
    marker1.title = @"Sukhna Lake";
    marker1.map = mapView;
    //creating a path

    GMSMutablePath *path = [GMSMutablePath path];
    [path addCoordinate:CLLocationCoordinate2DMake(@(30.6936659).doubleValue,@(76.77201819999999).doubleValue)];
    [path addCoordinate:CLLocationCoordinate2DMake(@(30.742138).doubleValue,@(76.818756).doubleValue)];

    GMSPolyline *rectangle = [GMSPolyline polylineWithPath:path];
    rectangle.strokeWidth = 2.f;
    rectangle.map = mapView;
    self.view=mapView;

 }