'Error on trying to jsonDecode String in Flutter application

When I try to decode a json String: [{"device-mac":"C9BF2EB47C17","on":true}] with the following function the error:

I/flutter ( 8954): type 'List' is not a subtype of type 'String'

get's thrown.

My function is this one, the json String is loaded from a Rest API endpoint:

Future<void> _getDevices() async {
    var parsedList;
    try {
      final response = await restApiClient.get(
        '/getDevices',
      );
      List<dynamic> parsedListJson = jsonDecode(response.data);
      List<Device> itemsList =
          List<Device>.from(parsedListJson.map((i) => Device.fromJson(i))); 
    
    }
  }

json flutter dart

Solution 1:^[1]

In the end the reason for it not working was that my REST endpoint already returned a list JSON Type which made the function "jsonDecode" redundant.

Solution 2:^[2]

I think it can parse Sting only and you passed a List of maps, you should either make a loop and then cast the map to string using 'response.data.toString' and then add the value to the list or if it's always one value try using 'response.data.first.toString()

Solution 3:^[3]

I think it can parse Sting only and if you passed a List of maps, you should either make a loop and then cast the map to string using 'response.data.torturing and then add the value to the list or if it's always one value try using 'response.data.first.toString()

Sources

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Source: Stack Overflow

Solution	Source
Solution 1	Thilo Jaeggi
Solution 2	LMech
Solution 3	Rahat

'Error on trying to jsonDecode String in Flutter application

Solution 1:[1]

Solution 2:[2]

Solution 3:[3]

Sources

Related Questions

Solution 1:^[1]

Solution 2:^[2]

Solution 3:^[3]