addTileOverlay method
Implementation
Future addTileOverlay(List<LatLng> optionsList) {
// final _optionsJson = options.toJsonString();
final _optionsListJson = jsonEncode(optionsList.map((it) => it.toJson()).toList());
print('addTileOverlay dart端参数: _optionsJson ->');
return _mapChannel.invokeMethod(
'map#addTileOverlay',
{'optionsList': _optionsListJson},
);
}