Answers for "flutter dart convert json to array"

5

flutter json to list

List to JSON: 
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List<String> fruits = ['Apple', 'Banana', 'Orange', 'Strawberry'];
String jsonFruits = jsonEncode(fruits);

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JSON to List:
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You need to convert each item individually

	var json = jsonEncode(jsonFruits.map((e) => e.toJson()).toList());

or pass an toEncodable function

	var json = jsonEncode(jsonFruits, toEncodable: (e) => e.toJsonAttr());
Posted by: Guest on May-20-2021
1

convert json to dart

class Todo {
  int userId;
  int id;
  String title;
  bool completed;

  Todo({this.userId, this.id, this.title, this.completed});

  Todo.fromJson(Map<String, dynamic> json) {
    userId = json['userId'];
    id = json['id'];
    title = json['title'];
    completed = json['completed'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['userId'] = this.userId;
    data['id'] = this.id;
    data['title'] = this.title;
    data['completed'] = this.completed;
    return data;
  }
}
Posted by: Guest on April-10-2021

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