getMapCenter method Null safety

Future<LatLng> getMapCenter()

获取地图中心点

Implementation

Future<LatLng> getMapCenter() async {
  var latLngMap = await _channel.invokeMethod('getMapCenter');
  return LatLng(
    latitude: latLngMap['latitude'] as double,
    longitude: latLngMap['longitude'] as double,
  );
}