How to parse any json file in Dart?

user_8382769 0
Viewed 97

Is it possible to have one function to read any json file with any structure? The application will read different json data that are not known in advance, I need to have a function that can process any json file.

dart flutter json
2 Answers

Using the dart_convert library you can parse a json string to a map using Map<String, dynamic> yourMap = jsonDecode(jsonString);

user_71770510

First you should build a Json Model and then convert it to object

Json :

[{"code": 401,"message": "No data found"}]

json to model :

class ResponseModel {
 int code;
 String message;
 
  ResponseModel({this.code, this.message});

  ResponseModel.fromJson(Map<String, dynamic> json) {
   code = json['code'];
   message = json['message'];
  }

 Map<String, dynamic> toJson() {
  final Map<String, dynamic> data = new Map<String, dynamic>();
  data['code'] = this.code;
  data['message'] = this.message;
  return data;
 }
}

convert json to Object LIst

      List<ResponseModel> lists =                        List<ResponseModel>.from(json.decode(response.body).map((x) => ResponseModel.fromJson(x)));
user_139217730
Related