readAsset method
Read asset binary data.
Returns the raw bytes of the asset.
Throws AssetNotFoundException if asset doesn't exist.
Implementation
@override
Future<Uint8List> readAsset(Uri uri) async {
final key = uri.toString();
final asset = _assets[key];
if (asset == null) {
throw AssetNotFoundException(uri);
}
return Uint8List.fromList(asset);
}