Counter App using GetX

 import "package:flutter/material.dart";

import "package:get/get.dart";
import "package:getx_flutter/GetX_Counter_App/controller.dart";

///The choice between GetBuilder, GetX, or Obx depends on your needs and
///the complexity of your application. If you only need to update a small portion of your widgets,
///GetBuilder can be a good choice. If you want to automatically update widgets
///based on state changes, GetX or Obx can be better options.

void main() {
  runApp(const MyApplication());
}
class MyApplication extends StatelessWidget {
  const MyApplication({super.key}) : super();

  @override
  Widget build(BuildContext context) {
    return GetMaterialApp(
      debugShowCheckedModeBanner: false,
      title: "GetX Counter App",
      theme: ThemeData(
        floatingActionButtonTheme: const FloatingActionButtonThemeData(
          backgroundColor: Colors.brown,
        ),
        primarySwatch: Colors.blue,
      ),
      home: CounterDemo(),
    );
  }
}
class CounterDemo extends StatelessWidget {
  CounterDemo({super.key}) : super();

  final CounterController _controller = Get.put(CounterController());

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("GetX Counter App"),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Obx(() {
              return Text("Clicks : ${_controller.count}",
              style: const TextStyle(fontSize: 50.0,),);
            },),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          _controller.increment();
        },
        backgroundColor: Colors.brown,
        foregroundColor: Colors.brown,
        child: const Icon(Icons.add, color: Colors.white,),
      ),
    );
  }
}

import "package:get/get.dart";

///GetxController comes with onInit() and onClose() methods.
///This allows us to completely avoid using StatefulWidget and write organized code.

class CounterController extends GetxController {
  var count = 0.obs;

  void increment() {
    count++;
    //update();
  }

  void decrement() {
    count--;
    //update();
  }
}