Flutter:使用GetX刷新ListView.Builder

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

class MyController extends GetxController {
  var itemList = [].obs;

  void fetchData() {
    // 模拟异步获取数据
    Future.delayed(Duration(seconds: 2), () {
      itemList.assignAll(['Item 1', 'Item 2', 'Item 3']);
    });
  }
}

class MyPage extends StatelessWidget {
  final MyController controller = Get.put(MyController());

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('ListView with GetX'),
      ),
      body: Obx(
        () => ListView.builder(
          itemCount: controller.itemList.length,
          itemBuilder: (context, index) {
            return ListTile(
              title: Text(controller.itemList[index]),
            );
          },
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          controller.fetchData();
        },
        child: Icon(Icons.refresh),
      ),
    );
  }
}