How to move marker (pin) with camera google maps xcode - ios

Question

I am using google maps api in my app. I've got two buttons in my app. the first button adds a marker (pin) in my map.
Now I want the second button to move the added pin to the center of the page horizontally and make it move to 25% off the top of the page. I want the camera (The area that the user is viewing) to move it too.
this is my code:
#implementation ViewController
{
double latitudes;
double longitudes;
CLLocationManager *locationManager;
GMSMapView *mapView_;
}
- (void)viewDidLoad
{
[super viewDidLoad];
locationManager = [[CLLocationManager alloc] init];
[self GetMyLocation];
UIButton *pinButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
pinButton.frame = CGRectMake(self.view.frame.size.width-80,self.view.frame.size.height-80, 60, 60);
[pinButton setTitle:#"Self" forState:UIControlStateNormal];
[pinButton setBackgroundColor:[UIColor whiteColor]];
[pinButton addTarget:self action:#selector(ShowMyLocation:) forControlEvents:UIControlEventTouchUpInside];
UIButton *add = [UIButton buttonWithType:UIButtonTypeRoundedRect];
add.frame = CGRectMake(20,self.view.frame.size.height-80, 60, 60);
[add setTitle:#"add" forState:UIControlStateNormal];
[add setBackgroundColor:[UIColor whiteColor]];
[add addTarget:self action:#selector(Move:) forControlEvents:UIControlEventTouchUpInside];
// Create a GMSCameraPosition that tells the map to display the
// nokte mohem ine ke baadan ye logitude & latitude default ezafe kon chon shaiad tuie ye sharaiete tokhmi ke hamid esrar dare va ye kasi mariz bood dastresie GPS ro ghat kard
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:latitudes longitude:longitudes zoom:14];
mapView_ = [GMSMapView mapWithFrame:CGRectZero camera:camera];
mapView_.myLocationEnabled = YES;
[mapView_ setMapType:kGMSTypeNormal];
self.view = mapView_;
[mapView_ addSubview:pinButton];
[mapView_ addSubview:add];
}
- (IBAction)Move:(id)sender{
//move marker place
}
- (IBAction)ShowMyLocation:(id)sender{
GMSMarker *marker = [[GMSMarker alloc] init];
marker.position = CLLocationCoordinate2DMake(coor.latitude,coor.longitude);
marker.title = #"I'm Here";
marker.snippet = #"Rahnova Co.";
marker.appearAnimation = kGMSMarkerAnimationPop;
marker.map = mapView_;
}
- (void) GetMyLocation{
locationManager.delegate = self;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
[locationManager startUpdatingLocation];
}
#pragma mark - CLLocationManagerDelegate
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{
NSLog(#"didFailWithError: %#", error);
UIAlertView *errorAlert = [[UIAlertView alloc]
initWithTitle:#"Error" message:#"Failed to Get Your Location" delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil];
[errorAlert show];
}
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{
CLLocation *currentLocation = newLocation;
if (currentLocation != nil) {
longitudes = currentLocation.coordinate.longitude;
latitudes = currentLocation.coordinate.latitude;
}
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:latitudes longitude:longitudes zoom:14];
[mapView_ animateToCameraPosition:camera];
}

Answer 1

Try this code:-
On the header of your .M implementation file, you have to implement the GMSMapViewDelegate.
#interface YourViewController ()<GMSMapViewDelegate>
Inside viewDidLoad, you have to set the mapView delegate to self.
mapView_.delegate=self;
For the delegate method:-
-(BOOL)mapView:(GMSMapView *)mapView didTapMarker:(GMSMarker *)marker{
[mapView animateToLocation:marker.position];
return YES;
}
It shall help you to go to the marker position when you tap on it.

Answer 2

You can move markers with animation. Here is code
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
CATransaction.begin()
CATransaction.setValue(2.0, forKey: kCATransactionAnimationDuration)
CATransaction.setCompletionBlock {
self.driverMarker.groundAnchor = CGPoint(x: 0.5, y: 0.5)
}
self.mapView.animate(to: GMSCameraPosition.camera(withLatitude: locations[0].coordinate.latitude, longitude: locations[0].coordinate.longitude, zoom: 17))
self.driverMarker.position = locations[0].coordinate
CATransaction.commit()
self.driverMarker.map = self.mapView
}