title: How to implement GMSMarker drag drop on GMSMapView?
body: <ol>
  <li><p>I set the marker on google map but when i drag it's all of map are drag.</p></li>
  <li><p>I want drag marker when click and drag on it's </p></li>
  <li><p>and drag map when click and drag outside marker.</p></li>
  </ol>
  
  <p>this is my code</p>
  
  
  
  <pre class="lang-c prettyprint-override"><code>self.camera = [GMSCameraPosition cameraWithLatitude:-33.86 longitude:151.20 zoom:6 bearing:0 viewingAngle:0];
  self.Map = [GMSMapView mapWithFrame:self.MapView.bounds camera:self.camera];
  self.Map.myLocationEnabled = YES;
  self.Map.delegate = self;
  
  GMSMarker *marker = [[GMSMarker alloc] init];
  marker.position = self.camera.target;
  marker.draggable = YES;
  marker.title = @"Sydney";
  marker.snippet = @"Australia";
  marker.map = self.Map;
  marker.icon = [GMSMarker markerImageWithColor:[UIColor blueColor]];
  marker.appearAnimation = kGMSMarkerAnimationPop;
  
  [self.MapView addSubview:self.Map];
  </code></pre>
  
  <p>and this is event on drag drop</p>
  
  <pre class="lang-c prettyprint-override"><code>- (void) mapView:(GMSMapView *)mapView didBeginDraggingMarker:(GMSMarker *)marker
  {
  
  }
  
  - (void) mapView:(GMSMapView *)mapView didEndDraggingMarker:(GMSMarker *)marker
  {
  
  }
  
  - (void) mapView:(GMSMapView *)mapView didDragMarker:(GMSMarker *)marker
  {
  
  }
  </code></pre>
  
  <p>when i run my app and debug all above event not work.
  but event click on marker work well.</p>
  
  <p>how i implement drag drop ? </p>