iOS 高德地图当前定位大头针随着地图拖动显示中心点

• (void)amapLocationManager:(AMapLocationManager *)manager didUpdateLocation:(CLLocation *)location reGeocode:(AMapLocationReGeocode *)reGeocode {
  self.mapView.centerCoordinate = location.coordinate;
  [self.locationmanger stopUpdatingLocation];
  }
• (void)mapViewRegionChanged:(MAMapView *)mapView {
  self.pointannotaion.coordinate = mapView.region.center;
  }