How to move marker on the Google Map like Ola app

Question

I am working on app the like Ola cabs. When the user drags map the a view transparent view appears with marker moving and when the user stops dragging the we have to centre

Answer 1

@interface ViewController ()  {
    GMSMarker *marker2;
}

In viewDidLoad

marker2 = [[GMSMarker alloc] init];

// Create a GMSCameraPosition that tells the map to display the
GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:latitude
                                                        longitude:longitude
                                                             zoom:18];
// Create GMSMapView
GMSMapView *mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];

// Available map types: kGMSTypeNormal, kGMSTypeSatellite, kGMSTypeHybrid,
// kGMSTypeTerrain, kGMSTypeNone

// Set the mapType to Satellite
mapView.mapType = kGMSTypeSatellite;


mapView.myLocationEnabled = YES;
self.view = mapView;

// Creates a marker in the center of the map.
GMSMarker *marker = [[GMSMarker alloc] init];
marker.position = CLLocationCoordinate2DMake(latitude, longitude);
marker.map = mapView;

mapView.delegate = self;

After that call delegate functions

- (void)mapView:(GMSMapView *)mapView willMove:(BOOL)gesture {
//    NSLog(@"willMove");
}

- (void) mapView:(GMSMapView *)mapView didChangeCameraPosition:(GMSCameraPosition *)position {
//    NSLog(@"didChangeCameraPosition");

// Creates a marker in the center of the map.

//    NSLog(@"%@", position);
      marker2.position = CLLocationCoordinate2DMake(mapView.camera.target.latitude, mapView.camera.target.longitude);
      marker2.map = mapView;
//    marker2.draggable = YES;
      marker2.icon = [GMSMarker markerImageWithColor:[UIColor blueColor]];


}