How to pass tiles map in Tileset class with mutiple tile layers. What should be the tiles key in that situation.

[dishant-livebird]

class Tileset {
  final bool preprocessed;
  final Map<String, Tile> tiles;
  late final LayerFeatureResolver _resolver;

  Tileset(this.tiles) : preprocessed = false {
    _resolver = DefaultLayerFeatureResolver(this);
  }
}

This is multiple data layer in bytes array

var tileData1 = TileFactory(theme, const Logger.noop())
                  .createTileData(VectorTileReader().read(tileBytes1));

var tileData2 = TileFactory(theme, const Logger.noop())
                  .createTileData(VectorTileReader().read(tileBytes2));

final tile1 = tileData1.toTile();
final tile2 = tileData2.toTile();

 Map<String, Tile> tiles = {};
 tiles.putIfAbsent("openmaptiles", () => tile1);
 tiles.putIfAbsent("?", () => tile2);   // what should be the value of key in this situation

final tileset = TilesetPreprocessor(theme)
                  .preprocess(Tileset(tiles), zoom: tileZXYValue[0].toDouble());

[greensopinion]

The key should correspond to a layer in your style/theme. You'll find example usage in vector_map_tiles

It's unusual to use these APIs directly. Have you considered using https://pub.dev/packages/vector_map_tiles instead? What is your use-case?