在Flutter中为从JSON转换而来的列表对象中的变量赋值

dependencies:
  json_annotation: ^4.0.0
  json_serializable: ^4.1.0

import 'package:json_annotation/json_annotation.dart';

part 'example_model.g.dart';

@JsonSerializable()
class ExampleModel {
  final String name;
  final int age;

  ExampleModel(this.name, this.age);

  factory ExampleModel.fromJson(Map<String, dynamic> json) =>
      _$ExampleModelFromJson(json);

  Map<String, dynamic> toJson() => _$ExampleModelToJson(this);
}

flutter pub run build_runner build

import 'dart:convert';

void main() {
  String jsonString = '{"name": "John", "age": 25}';
  Map<String, dynamic> json = jsonDecode(jsonString);
  ExampleModel exampleModel = ExampleModel.fromJson(json);

  print(exampleModel.name); // 输出：John
  print(exampleModel.age); // 输出：25
}