import 'package:flutter/material.dart';

class HomeScreen extends StatefulWidget {
  const HomeScreen({Key? key}) : super(key: key);

  @override
  State<HomeScreen> createState() => _HomeScreenState();
}

class _HomeScreenState extends State<HomeScreen> with WidgetsBindingObserver {
  @override
  void initState() {
    WidgetsBinding.instance!.addObserver(this);
    super.initState();
  }

  @override
  void dispose() {
    WidgetsBinding.instance!.removeObserver(this);
    super.dispose();
  }

  @override
  void didChangeAppLifecycleState(AppLifecycleState state) {
    super.didChangeAppLifecycleState(state);
    if (state == AppLifecycleState.resumed) {
      print("it is in resume state");
    }
    if (state == AppLifecycleState.inactive) {
      print("it is in inactive state");
    }
    if (state == AppLifecycleState.detached) {
      print("it is in detached state");
    }
    if (state == AppLifecycleState.paused) {
      print("it is in paused state");
    }
    // print("didChangeAppLifecycleState " + state.index.toString());
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(
          "App States",
        ),
        centerTitle: true,
      ),
      body: Center(
        child: Text(
          "I\nLove\n👨‍💻👩‍💻",
          textAlign: TextAlign.center,
          style: TextStyle(fontSize: 80),
        ),
      ),
    );
  }
}