Question

我用GMS创建了一个简单的IOS应用程序。我在特定位置添加了一些标记。我只想在用户点击标记时需要我的应用程序应在用户位置和点击标记之间画一条线。我没有发现标记确实采用了方法。

- (void)viewDidLoad {
[super viewDidLoad];
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:-33.868
                                                        longitude:151.2086
                                                             zoom:12];

mapView_ = [GMSMapView mapWithFrame:CGRectZero camera:camera];
mapView_.settings.compassButton = YES;
mapView_.settings.myLocationButton = YES;

mapView_ = [GMSMapView mapWithFrame:CGRectZero camera:camera];
mapView_.myLocationEnabled = YES;
self.view = mapView_;





GMSMarker *marker1 = [[GMSMarker alloc] init];
marker1.position = CLLocationCoordinate2DMake(40.992735,28.789164);
marker1.title = @"ASD";
marker1.map = mapView_;

我的应用程序在LocationServices的当前位置打开。我只想在用户和用户点击标记之间找到方向。我怎样才能做到这一点？

谢谢！祝大家度过愉快的一天。

Answer 1

In -(void)mapView:(GMSMapView *)mapView didTapInfoWindowOfMarker:(GMSMarker *)marker// This method will get call after taping marker pin(GMSMapView map view delegate method).
{ get the latitude and longitude of that marker.

}

Take the latitude and longitude of current location

Now Draw route between two location
//Download LRouteController from this link  https://github.com/lukagabric/LRouteController

//This will draw link between two co-ordinate
//In .h File declare LRouteController *_routeController;
 if ([_coordinates count] > 1)
    {
        //Draw line between two co-ordinate
        [_routeController getPolylineWithLocations:_coordinates travelMode:TravelModeDriving andCompletitionBlock:^(GMSPolyline *polyline, NSError *error) {
            if (error)
            {
                NSLog(@"%@", error);
            }
            else if (!polyline)
            {
                NSLog(@"No route");
                [_coordinates removeAllObjects];
                UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"No route" message:@"No route available for this route." delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
                [alert show];
            }
            else
            {
                //Drow route
                _markerStart.position = [[_coordinates objectAtIndex:0] coordinate];
                _markerStart.map = googleMapview;

                _markerFinish.position = [[_coordinates lastObject] coordinate];
                _markerFinish.map = googleMapview;

                _polyline = polyline;
                _polyline.strokeWidth = 3;
                _polyline.strokeColor = [UIColor blueColor];
                _polyline.map = googleMapview;
            }
        }];
    }


//If you are unable to get taped pin latitude and longitude the you can use custom GMSMarker
Ex: @interface MapMarker : GMSMarker //Create new file of GMSMarker
@property (nonatomic, strong) coOrdinateData *data;(CoOrdinateData is NSObject class declare lat and long value)
@end

While adding marker on map use 
 MapMarker *marker= [[MapMarker alloc]init];

            [marker setPosition:CLLocationCoordinate2DMake(LocationAtual.coordinate.latitude,LocationAtual.coordinate.longitude)];
  marker.data=data;//Take lat and long value in object class and pass object class in marker object
After typing on map marker you can get value like
-(void)mapView:(GMSMapView *)mapView didTapInfoWindowOfMarker:(GMSMarker *)marker
{
NSString *strLat = ((MapMarker *)marker).data.lat ;
NSString *strLong = ((MapMarker *)marker).data.long ;
//Add both the current location and marker  latitude and longitude in _coordinates and draw route.
}

适用于iOS方向的Google Maps SDK

1 个答案: