具有Getx状态管理的Listview.builder

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

class MyController extends GetxController {
  var items = [].obs; // 使用 .obs 使得列表变为响应式的

  void addItem(String item) {
    items.add(item); // 添加新项时创建新的列表对象
  }
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final controller = Get.put(MyController());

    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Getx ListView Example')),
        body: Obx(() => ListView.builder(
          itemCount: controller.items.length,
          itemBuilder: (context, index) {
            return ListTile(title: Text(controller.items[index]));
          },
        )),
        floatingActionButton: FloatingActionButton(
          onPressed: () => controller.addItem('New Item'),
          child: Icon(Icons.add),
        ),
      ),
    );
  }
}

void main() {
  runApp(MyApp());
}