added (very) simple notifcations test to app

lib/main.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
 import 'package:pizzaplanner/entities/PizzaEvent.dart';
 import 'package:pizzaplanner/entities/PizzaRecipe/Ingredient.dart';
 import 'package:pizzaplanner/entities/PizzaRecipe/PizzaRecipe.dart';
@@ -13,7 +14,10 @@ import 'package:hive/hive.dart';
 import 'package:hive_flutter/hive_flutter.dart';
 import 'package:pizzaplanner/util.dart';
 
+final flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
+
 void main() async {
+  // hive init
   await Hive.initFlutter();
 
   Hive.registerAdapter(PizzaEventAdapter());
@@ -30,6 +34,18 @@ void main() async {
     pizzaRecipesBox.addAll(await getRecipes());
   }
 
+  // notification init
+  const initializationSettingsAndroid = AndroidInitializationSettings('@mipmap/app_icon');
+  final initializationSettingsIOS = IOSInitializationSettings();
+  final initializationSettingsMacOS = MacOSInitializationSettings();
+  final initializationSettings = InitializationSettings(
+      android: initializationSettingsAndroid,
+      iOS: initializationSettingsIOS,
+      macOS: initializationSettingsMacOS
+  );
+  await flutterLocalNotificationsPlugin.initialize(initializationSettings,
+      onSelectNotification: selectNotification);
+
   runApp(PizzaPlanner());
 
   //await Hive.close();
@@ -68,4 +84,12 @@ class RouteGenerator {
       }
     }
   }
+}
+
+Future selectNotification(String? payload) async {
+  if (payload == null) {
+    print("Payload: null");
+    return;
+  }
+  print("Payload: $payload");
 }

lib/pages/PizzaEventPage.dart

@@ -1,8 +1,10 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
 import 'package:fluttericon/font_awesome5_icons.dart';
 import 'package:pizzaplanner/entities/PizzaEvent.dart';
 import 'package:pizzaplanner/entities/PizzaRecipe/RecipeStep.dart';
 import 'package:pizzaplanner/entities/PizzaRecipe/RecipeSubStep.dart';
+import 'package:pizzaplanner/main.dart';
 
 class PizzaEventPage extends StatefulWidget {
   final PizzaEvent pizzaEvent;
@@ -157,6 +159,28 @@ class SubStepDialogState extends State<SubStepDialog> {
                             },
                           )
                       )
+                  ),
+                  SizedBox(
+                      width: double.infinity,
+                      height: 70,
+                      child: Container(
+                          color: Colors.grey,
+                          child: TextButton(
+                            child: Text("Notify!", style: TextStyle(color: Colors.white)),
+                            onPressed: () async {
+                              const androidPlatformChannelSpecifics = AndroidNotificationDetails(
+                                "PizzaEvent", "PizzaEvent", "PizzaEvent notifications",
+                                importance: Importance.max,
+                                priority: Priority.high,
+                                ticker: "ticker"
+                              );
+                              const platformChannelSpecific = NotificationDetails(android: androidPlatformChannelSpecifics);
+                              await flutterLocalNotificationsPlugin.show(
+                                  0, 'test', 'teeest', platformChannelSpecific,
+                                  payload: "payload123");
+                            },
+                          )
+                      )
                   )
                 ]
             )

pubspec.yaml

@@ -38,6 +38,8 @@ dependencies:
   hive: ^2.0.4
   hive_flutter: ^1.1.0
 
+  flutter_local_notifications: ^8.0.0
+
 dev_dependencies:
   flutter_test:
     sdk: flutter