background notifications

lib/main.dart

@@ -9,17 +9,16 @@ import 'package:awesome_notifications/awesome_notifications.dart';
 import 'package:disable_battery_optimization/disable_battery_optimization.dart';
 import 'package:flutter_background_service/flutter_background_service.dart';
 import 'package:shared_preferences/shared_preferences.dart';
+import 'dart:math';
 
 @pragma('vm:entry-point')
 void callbackDispatcher() async {
-  WidgetsFlutterBinding.ensureInitialized();
-  SharedPreferences.getInstance();
-  print("test1");
+
   Map content = await FileHandler.fileContent;
+  int id = 15;
   for (String key in content.keys) {
     Map list = content[key];
     for (String title in list.keys) {
-      print("test2");
       Map current = list[title];
       DateTime dueTime = DateTime.parse(current["dueTime"]);
       bool checked = current["checked"];
@@ -27,21 +26,22 @@ void callbackDispatcher() async {
       int timeDiff = dueTime
           .difference(currentTime)
           .inMinutes;
-      if (timeDiff <= 30 && timeDiff >= 0 && !checked) {
+      if (timeDiff <= 45 && timeDiff >= 0 && !checked) {
         AwesomeNotifications().createNotification(
             content: NotificationContent(
-                id: 10,
+                id: id,
                 channelKey: "reminder_channel",
                 title: "Task due!",
                 body: "Task $title due in $timeDiff minutes!"));
       }
+      id++;
     }
   }
 }
 
 @pragma('vm:entry-point')
 void onStart(ServiceInstance service) {
-  Timer.periodic(const Duration(seconds: 10), (timer) {
+  Timer.periodic(const Duration(minutes: 15), (timer) {
     callbackDispatcher();
   });
 }