updatePosition method Null safety

Future<bool> updatePosition(
  1. BMFCoordinate position
)

更新Ground 位置, Android独有

BMFCoordinate position ground位置

Implementation

Future<bool> updatePosition(BMFCoordinate position) async {
  ArgumentError.checkNotNull(position, "position");

  bool ret = await BMFMapDispatcherFactory.instance.overlayDispatcher
      .updateGroundMember(this.methodChannel,
          {'id': this.id, 'member': 'position', 'value': position.toMap()});

  if (ret) {
    this.position = position;
  }

  return ret;
}