List of flutter images

Question

In my flutter app I want to display images, and these images will be grouped by categories/albums. These images are brought in the form of an array, in this format:

This is my current function to bring these images

class ImagensApiProvider {
  Future<List<Imagens>> imagens() async {
    final response = await Dio().get(
      ApplicationConsts.BASE_API_URI + 'images/' + '3/' + '20',
    );

    if (response.statusCode == 200) {
      final parsed = response.data.cast<Map<String, dynamic>>();
      return parsed.map<Imagens>((json) => Imagens.fromJson(json)).toList();
    } else {
      throw Exception('Falha ao carregar Imagens');
    }
  }
}

'/3' and '20' are respectively the user id and the album id (this I resolve later).

The fact is that I came across the following mistake:

And in Sponse.data I get the following:

How do I fix it?

From now on, I appreciate any help!

Answer 1

How do you already get a list of Strings, there’s no reason to turn her into a map, work directly on her:

Subistitua that

final parsed = response.data.cast<Map<String, dynamic>>();
return parsed.map<Imagens>((json) => Imagens.fromJson(json)).toList();

therefore

return response.data.map<Imagens>((json) => Imagens.fromJson(json)).toList();