chat_gpt_application.dart

import 'package:flutter/widgets.dart';

class Application with WidgetsBindingObserver {
  final Widget home;
  final Function onLaunch;
  final Function onTerminate;

  Application({
    @required this.home,
    this.onLaunch,
    this.onTerminate,
  }) {
    WidgetsBinding.instance.addObserver(this);
  }

  void run() {
    runApp(home);
  }

  @override
  void didChangeAppLifecycleState(AppLifecycleState state) {
    switch (state) {
      case AppLifecycleState.initiated:
        if (onLaunch != null) {
          onLaunch();
        }
        break;
      case AppLifecycleState.paused:
      case AppLifecycleState.inactive:
      case AppLifecycleState.detached:
        if (onTerminate != null) {
          onTerminate();
        }
        break;
    }
  }
}