initializeLocalNotifications function

Future<NotificationService> initializeLocalNotifications(String? icon, { List<NotificationAction>? actionCategories, bool requestPermissions = false, void onDidReceiveNotificationResponse(NotificationResponse)?, void onDidReceiveBackgroundNotificationResponse(NotificationResponse)?, })

Initialises the local notifications plugin for all supported platforms.

Pass an optional icon drawable name (without prefix/extension). Set requestPermissions to true to prompt the user for permission. Returns a NotificationService with the resulting initialisation state.

Implementation

Future<NotificationService> initializeLocalNotifications(String? icon,
// if platform is windows we dont initialize notifications

    {List<NotificationAction>? actionCategories,
    bool requestPermissions = false,
    void Function(NotificationResponse)? onDidReceiveNotificationResponse,
    void Function(NotificationResponse)?
        onDidReceiveBackgroundNotificationResponse}) async {
  NotificationService notificationService = NotificationService(
    initialized: false,
    permissionGranted: false,
    didNotificationLaunchApp: false,
    launchPayload: null,
  );

  final NotificationAppLaunchDetails? notificationAppLaunchDetails =
      (!kIsWeb && Platform.isLinux) || Platform.isWindows
          ? null
          : await flutterLocalNotificationsPlugin
              .getNotificationAppLaunchDetails();

  // check for payload if app was launched via notification
  if (notificationAppLaunchDetails?.didNotificationLaunchApp ?? false) {
    notificationService.didNotificationLaunchApp = true;
    notificationService.launchPayload =
        notificationAppLaunchDetails!.notificationResponse?.payload;

    // initialRoute = SecondPage.routeName;
  }
  var initializationSettingsAndroid = AndroidInitializationSettings(
      icon != null ? '@mipmap/$icon' : '@mipmap/ic_launcher');

  // Linux initialization settings
  final LinuxInitializationSettings initializationSettingsLinux =
      LinuxInitializationSettings(
    defaultActionName: 'Open notification',
    defaultIcon: AssetsLinuxIcon(
        icon != null ? 'icons/$icon.png' : 'icons/app_icon.png'),
  );

  // macOS initialization settings
  final List<DarwinNotificationCategory> darwinNotificationCategories =
      <DarwinNotificationCategory>[];
  final DarwinInitializationSettings initializationSettingsDarwin =
      DarwinInitializationSettings(
    requestAlertPermission: false,
    requestBadgePermission: false,
    requestSoundPermission: false,
    // onDidReceiveLocalNotification:
    //     (int id, String? title, String? body, String? payload) async {
    //   didReceiveLocalNotificationStream.add(
    //     NotificationMessage(
    //       id: id,
    //       title: title ?? '',
    //       body: body ?? '',
    //       payload: payload,
    //     ),
    //   );
    // },
    notificationCategories: darwinNotificationCategories,
  );

  final InitializationSettings initializationSettings = InitializationSettings(
    android: initializationSettingsAndroid,
    iOS: initializationSettingsDarwin,
    macOS: initializationSettingsDarwin,
    linux: initializationSettingsLinux,
  );
  notificationService.initialized = Platform.isWindows
      ? false
      : await flutterLocalNotificationsPlugin.initialize(settings: initializationSettings,
          onDidReceiveNotificationResponse: onDidReceiveNotificationResponse,
          onDidReceiveBackgroundNotificationResponse:
              onDidReceiveBackgroundNotificationResponse);

  if (requestPermissions) {
    switch (defaultTargetPlatform) {
      case TargetPlatform.android:
        notificationService.permissionGranted =
            await flutterLocalNotificationsPlugin
                .resolvePlatformSpecificImplementation<
                    AndroidFlutterLocalNotificationsPlugin>()
                ?.requestNotificationsPermission();
        break;

      case TargetPlatform.iOS:
        notificationService.permissionGranted =
            await flutterLocalNotificationsPlugin
                .resolvePlatformSpecificImplementation<
                    IOSFlutterLocalNotificationsPlugin>()
                ?.requestPermissions(
                  alert: true,
                  badge: true,
                  sound: true,
                );
      case TargetPlatform.macOS:
        notificationService.permissionGranted =
            await flutterLocalNotificationsPlugin
                .resolvePlatformSpecificImplementation<
                    IOSFlutterLocalNotificationsPlugin>()
                ?.requestPermissions(
                  alert: true,
                  badge: true,
                  sound: true,
                );
        break;
      case TargetPlatform.linux:
        notificationService.permissionGranted = true;
        break;
      default:
        notificationService.permissionGranted = true;
        break;
    }
  } else {
    notificationService.permissionGranted = true;
  }
  return notificationService;
}