如何将下载的数据从API保存到Flutter中的RAM？

import 'package:flutter/material.dart';
import 'package:dio/dio.dart';

class DataModel {
  final String name;
  final int age;

  DataModel({required this.name, required this.age});
}

class ApiDataScreen extends StatefulWidget {
  @override
  _ApiDataScreenState createState() => _ApiDataScreenState();
}

class _ApiDataScreenState extends State<ApiDataScreen> {
  List<DataModel> data = [];

  Future<void> fetchData() async {
    try {
      // 发送网络请求到API
      Response response = await Dio().get('https://api.example.com/data');

      // 解析API响应数据
      List<dynamic> responseData = response.data;
      List<DataModel> newData = responseData.map((item) {
        return DataModel(name: item['name'], age: item['age']);
      }).toList();

      // 将数据保存到Flutter中的RAM
      setState(() {
        data = newData;
      });
    } catch (error) {
      // 处理错误
      print(error);
    }
  }

  @override
  void initState() {
    super.initState();
    fetchData();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('API Data'),
      ),
      body: ListView.builder(
        itemCount: data.length,
        itemBuilder: (context, index) {
          return ListTile(
            title: Text(data[index].name),
            subtitle: Text(data[index].age.toString()),
          );
        },
      ),
    );
  }
}