Custom infobox when tap event

Question

I'm trying to have an info box, same one as the standard for markers, to appear when a my polyline is tapped. I've gotten a NSLog to output when the line is tapped, but now I need to have the infobox appear instead of the NSLog. I've seen some Javascript examples but no objective c ones.

- (void)loadView {

// Create a GMSCameraPosition
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:37.551927
                                                        longitude:-77.456292
                                                             zoom:18];
GMSMapView *mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];
CLLocationCoordinate2D position = CLLocationCoordinate2DMake(37.551709, -77.456510);
mapView.settings.myLocationButton = YES;
mapView.myLocationEnabled = YES;
self.view = mapView;
mapView.delegate = self;

GMSMutablePath *path = [GMSMutablePath path];
[path addCoordinate:CLLocationCoordinate2DMake(37.552243, -77.457415)];
[path addCoordinate:CLLocationCoordinate2DMake(37.551054, -77.455443)];

GMSPolyline *polyline = [GMSPolyline polylineWithPath:path];

UILabel *myLabel = [[UILabel alloc] init];

UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self      action:@selector(labelTapped)];
tapGestureRecognizer.numberOfTapsRequired = 1;
[myLabel addGestureRecognizer:tapGestureRecognizer];
 myLabel.userInteractionEnabled = YES;

polyline.spans = @[[GMSStyleSpan spanWithColor:[UIColor greenColor]]];
polyline.strokeWidth = 5.f;
polyline.tappable = true;
polyline.map = mapView;

}

- (void)mapView:(GMSMapView *)mapView didTapOverlay:(GMSOverlay *)overlay
{
    NSLog(@"in didTapOverlay");
}

@end

score 0 · Answer 1 · edited May 23 '17 at 11:51

Check the Events guide from the iOS Maps tutorial. Here's a snippet in Objective-C:

- (void)loadView {
  GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:1.285
                                                          longitude:103.848
                                                               zoom:12];
  GMSMapView *mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];
  mapView.delegate = self;
  self.view = mapView;
}

#pragma mark - GMSMapViewDelegate

- (void)mapView:(GMSMapView *)mapView
    didTapAtCoordinate:(CLLocationCoordinate2D)coordinate {
  NSLog(@"You tapped at %f,%f", coordinate.latitude, coordinate.longitude);
}

Here's an SO thread demonstrating the use of GMSMapViewDelegate:

1.conform to the GMSMapViewDelegate protocol.

@interface YourViewController () <GMSMapViewDelegate>
// your properties
@end
2.set your mapView_ delegate.

mapView_.delegate = self;
3.implement the GMSMapViewDelegate method

- (void)mapView:(GMSMapView *)mapView didTapInfoWindowOfMarker:(GMSMarker *)marker {
    // your code
}

Addition: marker.userData is useful. you can set your needed data into it and use it in - mapView:didTapInfoWindowOfMarker:

Custom infobox when tap event

1 Answers1