Rotate GMSMarker in direction at which user facing

Question

I have requirement like on my current location one view will display. It will rotate if device was rotate or location will be change.I research lot but got all the code whic

Answer 1

Try this, it worked for me

func locationManager(_ manager: CLLocationManager, didUpdateHeading newHeading:CLHeading) {
    UIView.animate(withDuration: 0.005) {
       let angle = newHeading.trueHeading.toRadians() // convert from degrees to radians
       self.yourImageHere.transform = CGAffineTransform(rotationAngle: CGFloat(angle)) // rotate the picture
    }
}
override func viewDidLoad() {
   super.viewDidLoad()
   locationManager.startUpdatingHeading()
}

Answer 2

marker.rotation = course_of_location;

Note: rotation to pin will happen only during movement. in case of static device there will be -1 value of location.course. Also this have no relation with device orientation. If you are looking to move pin according to device heading then do this

- (void)locationManager:(CLLocationManager *)manager didUpdateHeading:(CLHeading *)newHeading {
marker.rotation =  (manager.heading.trueHeading) * M_PI / 180.0f; }

Answer 3

We can rotate image based on course property CLLocation Class

    let marker:GMSMarker = GMSMarker.init(position: currentLocation!)
    let head = locationManager.location?.course ?? 0
    marker.rotation = head
    marker.icon = UIImage(named: "testyCar.png")
    marker.map = mapView 

Answer 4

//just do this only

- (void)locationManager:(CLLocationManager *)manager  didUpdateHeading:(CLHeading *)newHeading
{
   double heading = newHeading.trueHeading;
   marker.groundAnchor = CGPointMake(0.5, 0.5);
   marker.rotation = heading;
   marker.map = mapView;
}

Answer 5

Swift 4+

Thanks to priya.vr. When you updating location marker, try this:

 let locationManager = CLLocationManager()
 marker.position = position
 marker.appearAnimation = .none
 marker.rotation = locationManager.location?.course ?? 0
 marker.map = map

Answer 6

you can do something like -

-(void)locationManager:(CLLocationManager *)manager didUpdateHeading:(CLHeading *)newHeading {

    CLLocationDirection direction = newHeading.trueHeading;
    lastDriverAngleFromNorth = direction;
    self.driverMarker.rotation = lastDriverAngleFromNorth - mapBearing;
}

#pragma mark - GMSMapViewDelegate

- (void)mapView:(GMSMapView *)mapView didChangeCameraPosition:(GMSCameraPosition *)position {

    mapBearing = position.bearing;
    self.driverMarker.rotation = lastDriverAngleFromNorth - mapBearing;
}