how to add notification permission in flutter local notification - flutter

Question

I'm simply adding a local notification, however in real device notification is appears but without making a sound. For certain real devices, the notification is enabled by default, but we have to manually enable it in some devices. can anyone know how should i add permission in this code
import 'package:flutter_local_notifications/flutter_local_notifications.dart';
import 'package:timezone/timezone.dart' as tz;
class NotificationService {
final FlutterLocalNotificationsPlugin notificationsPlugin =
FlutterLocalNotificationsPlugin();
Future<void> initNotification() async {
AndroidInitializationSettings initializationSettingsAndroid =
const AndroidInitializationSettings('mipmap/ic_launcher');
var initializationSettingsIOS = DarwinInitializationSettings(
requestAlertPermission: true,
requestBadgePermission: true,
requestSoundPermission: true,
onDidReceiveLocalNotification:
(int id, String? title, String? body, String? payload) async {});
var initializationSettings = InitializationSettings(
android: initializationSettingsAndroid, iOS: initializationSettingsIOS);
await notificationsPlugin.initialize(initializationSettings,
onDidReceiveNotificationResponse:
(NotificationResponse notificationResponse) async {});
}
notificationDetails() {
return const NotificationDetails(
android: AndroidNotificationDetails('channelId', 'channelName',
importance: Importance.max,
playSound: true,
),
iOS: DarwinNotificationDetails());
}
Future showNotification(
{int id = 0, String? title, String? body, String? payLoad}) async {
return notificationsPlugin.show(
id, title, body, await notificationDetails());
}
Future scheduleNotification(
{int id = 0,
String? title,
String? body,
String? payLoad,
required DateTime scheduledNotificationDateTime}) async {
return notificationsPlugin.zonedSchedule(
id,
title,
body,
tz.TZDateTime.from(
scheduledNotificationDateTime,
tz.local,
),
await notificationDetails(),
androidAllowWhileIdle: true,
uiLocalNotificationDateInterpretation:
UILocalNotificationDateInterpretation.absoluteTime);
}
}

Answer 1

You can use permission_handler plugin to request permission on iOS, android and windows.
For Example:
PermissionStatus status = await Permission.notification.request();
if (status.isGranted) {
// notification permission is granted
}
else {
// Open settings to enable notification permission
}
if you are using for iOS then don't forget to add this in you pod file
post_install do |installer|
installer.pods_project.targets.each do |target|
... # Here are some configurations automatically generated by flutter
# Start of the permission_handler configuration
target.build_configurations.each do |config|
# You can enable the permissions needed here. For example to enable camera
# permission, just remove the `#` character in front so it looks like this:
#
# ## dart: PermissionGroup.camera
# 'PERMISSION_CAMERA=1'
#
# Preprocessor definitions can be found in: https://github.com/Baseflow/flutter-permission-handler/blob/master/permission_handler_apple/ios/Classes/PermissionHandlerEnums.h
config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [
'$(inherited)',
## dart: PermissionGroup.notification
'PERMISSION_NOTIFICATIONS=1',
]
end
# End of the permission_handler configuration
end
end