使用json向类添加值并在flutter中创建列表视图

class Todo {
  String title;
  bool completed;

  Todo({
    required this.title,
    required this.completed,
  });
}

[
  {
    "title": "Buy groceries",
    "completed": false
  },
  {
    "title": "Walk the dog",
    "completed": true
  }
]

import 'dart:convert';

void main() {
  String jsonStr = '''
  [
    {
      "title": "Buy groceries",
      "completed": false
    },
    {
      "title": "Walk the dog",
      "completed": true
    }
  ]
  ''';

  List<Todo> todos = [];

  List<dynamic> jsonList = json.decode(jsonStr);
  jsonList.forEach((json) {
    Todo todo = Todo(
      title: json['title'],
      completed: json['completed'],
    );
    todos.add(todo);
  });

  // 打印待办事项列表
  todos.forEach((todo) {
    print('Title: ${todo.title}');
    print('Completed: ${todo.completed}');
    print('---');
  });
}

Title: Buy groceries
Completed: false
---
Title: Walk the dog
Completed: true
---

import 'package:flutter/material.dart';

void main() {
  List<Todo> todos = [
    Todo(title: 'Buy groceries', completed: false),
    Todo(title: 'Walk the dog', completed: true),
  ];

  runApp(MyApp(todos: todos));
}

class MyApp extends StatelessWidget {
  final List<Todo> todos;

  MyApp({required this.todos});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Todo List',
      home: Scaffold(
        appBar: AppBar(
          title: Text('Todo List'),
        ),
        body: ListView.builder(
          itemCount: todos.length,
          itemBuilder: (context, index) {
            return ListTile(
              title: Text(todos[index].title),
              subtitle: Text(todos[index].completed ? 'Completed' : 'Not completed'),
            );
          },
        ),
      ),
    );
  }
}