CODEWITHSUNDEEP
jsondartflutter
VeeXit
VeeXit

Reputation: 79

InternalLinkedHashMap<String, dynamic>' is not a subtype of type 'FutureOr<List<dynamic> when try to parse JSON

I learn flutter through the step-by-step guide. So, when I use code from the guide - it's working good, but when I try to change JSON URL, I get the error. As I understand, the problem with JSON format and jsonDecode just can't decode RIOT JSON, but how to fix it? 

List _games = await getGames();

Future<List> getGames() async {


    //Not working with this JSON URL
    String apiUrl = 'https://euw1.api.riotgames.com/lol/match/v4/matchlists/by-account/UZs5l9TT7GLEPfoOZ1eTMqqyJEomgmUHueGQ2aFNHaYTOZI/?api_key=RGAPI-07972f29-94f8-4d54-a2dd-527d4eeb0335';

    //Working good with this JSON URL
    String apiUrl = 'https://jsonplaceholder.typicode.com/posts';

  http.Response response = await http.get(apiUrl, headers: {"Accept": "application/json"});
  print(jsonDecode(response.body));
  return jsonDecode(response.body);
}

Upvotes: 5

Views: 13075

Answers (1)

G&#252;nter Z&#246;chbauer
G&#252;nter Z&#246;chbauer

Reputation: 657238

Change 

Future<List>

to

Future<Map<String,dynamic>>

If you have JSON like [1, 2, 3] or ["foo", "bar", "baz"] you get a List, but if you have JSON like {"foo": 1, "bar": 2, "baz": 3} you get a Map<String,dynamic>. For "foo" you'd get a String and for true a bool, and so forth. I guess you get the idea.

Upvotes: 3

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