GetX Controller Life Cycle

 import "package:flutter/material.dart";

import "package:get/get.dart";
import "package:getx_flutter/Simple_State_Manager/simple_controller.dart";

void main() {
  runApp(const MyApp(),);
}
class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return GetMaterialApp(
      debugShowCheckedModeBanner: false,
      title: "Reactive State Manager",
      theme: ThemeData(
        primarySwatch: Colors.brown,
      ),
      home: const AgainReact(),
    );
  }
}
class AgainReact extends StatelessWidget {
  const AgainReact({super.key});

  //SimpleReact simpleController = Get.put(SimpleReact(),);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("Reactive State Manager"),
        centerTitle: true,
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            GetBuilder<SimpleReact>(
              init: SimpleReact(), ///Same as the "Get.put(SimpleReact(),);"
              initState: (_) { return print("Controller instance is initialized"); },
              dispose: (_) { return print("When Controller is removed from memory after that dispose method will be called"); },
              builder: (simpleController) {
                return Text(
                  "${simpleController.count}",
                  style: const TextStyle(fontSize: 30.0,),
                );
              },),
            ElevatedButton(
              onPressed: () {
                ///If we don't create controller instance initially then we have to find Controller and
                ///Get.find() will give same instance(of Controller) everytime and we can use throughout the app
                var getController = Get.find<SimpleReact>();
                getController.increment();

                // simpleController.increment();
              },
              child: const Text("Increment"),
            ),
          ],
        ),
      ),
    );
  }
}
///Note:
///When we want to perform any action when Controller is initialized at that time :iniState: (_) {}"
///is used
///Always, All the business Logics(Like variable, methods...) will written in Controller class
/// and it is separate from UI