This plugin allows using native dialogs in Android and iOS. It was made specifically for Add2App use cases when just a part of your UI is made in Flutter. In this case, you can't use the built-in dialog system.
If you are not integrating Flutter in your existing app, you are better off using the built-in dialog system from the Flutter library
To use this plugin, add flutter_native_dialog
as a dependency in your pubspec.yaml file.
import 'package:flutter_native_dialog/flutter_native_dialog.dart';
final result = await FlutterNativeDialog.showConfirmDialog(
title: "This is a confirm dialog",
message: "A message in the dialog",
positiveButtonText: "OK",
negativeButtonText: "Cancel",
);
print(result); // true or false depending on user input