How to print the notification content in the terminal - Flutter - flutter

Question

I am trying to print the content of the notification that comes through PHP (topics) How to print the content of the notification in the terminal using Flutter?
code:
class PushNotificationService {
late BuildContext context;
PushNotificationService({required this.context});
Future initialise() async {
FirebaseMessaging.instance.subscribeToTopic('TopicToListen');
print('firebase_token->initialize===${messaging == null}==');
iOSPermission();
print('firebase_token->initialize=///');
messaging.getToken();
print('firebase_token->initialize==**');
const AndroidInitializationSettings initializationSettingsAndroid =
AndroidInitializationSettings('ic_launcher');
/* const IOSInitializationSettings initializationSettingsIOS = IOSInitializationSettings();
const MacOSInitializationSettings initializationSettingsMacOS = MacOSInitializationSettings();*/
final DarwinInitializationSettings initializationSettingsIOS =
DarwinInitializationSettings(
requestAlertPermission: false,
requestBadgePermission: false,
requestSoundPermission: false,
onDidReceiveLocalNotification:
(int id, String? title, String? body, String? payload) async {
/* didReceiveLocalNotificationStream.add(
ReceivedNotification(
id: id,
title: title,
body: body,
payload: payload,
),
);*/
},
);
/*const InitializationSettings initializationSettings =
InitializationSettings(
android: initializationSettingsAndroid,
iOS: initializationSettingsIOS,
macOS: initializationSettingsMacOS);*/
final InitializationSettings initializationSettings =
InitializationSettings(
android: initializationSettingsAndroid,
iOS: initializationSettingsIOS,
);
/*flutterLocalNotificationsPlugin.initialize(initializationSettings,
onSelectNotification: (String? payload) async {
print("payload*****$payload");
selectNotificationPayload(payload);
});*/
await flutterLocalNotificationsPlugin.initialize(
initializationSettings,
onDidReceiveNotificationResponse:
(NotificationResponse notificationResponse) {
switch (notificationResponse.notificationResponseType) {
case NotificationResponseType.selectedNotification:
selectNotificationPayload(notificationResponse.payload!);
break;
case NotificationResponseType.selectedNotificationAction:
print(
"notification-action-id--->${notificationResponse.actionId}==${notificationResponse.payload}");
break;
}
},
onDidReceiveBackgroundNotificationResponse: backgroundMessage,
);
FirebaseMessaging.onMessage.listen((RemoteMessage message) {
if (message.data != null) {
var data = message.data;
var notif = message.notification;
if (data['type'] == "default" || data['type'] == "category") {
var title = data['title'].toString();
var body = data['message'].toString();
var image = data['image'];
var payload = data["news_id"];
if (payload == null) {
payload = "";
} else {
payload = payload;
}
if (image != null && image != "") {
if (notiEnable!) {
generateImageNotication(title, body, image, payload);
}
} else {
if (notiEnable!) {
generateSimpleNotication(title, body, payload);
}
}
} else {
//Direct Firebase Notification
var title = notif?.title.toString();
var msg = notif?.body.toString();
var img = notif?.android?.imageUrl.toString();
if (notiEnable!) {
(img != null)
? generateImageNotication(title!, msg!, img, '')
: generateSimpleNotication(title!, msg!, '');
}
}
}
});
messaging.getInitialMessage().then((RemoteMessage? message) async {
bool back = await getPrefrenceBool(ISFROMBACK);
print("message******$message");
if (message != null && back) {
var data = message.data;
var notif = message.notification;
if (data['type'] == "default" || data['type'] == "category") {
var title = data['title'].toString();
var body = data['message'].toString();
var image = data['image'];
var payload = data["news_id"];
if (payload == null) {
payload = "";
} else {
payload = payload;
}
if (image != null && image != "") {
if (notiEnable!) {
generateImageNotication(title, body, image, payload);
}
} else {
if (notiEnable!) {
generateSimpleNotication(title, body, payload);
}
}
} else {
//Direct Firebase Notification
var title = notif?.title.toString();
var msg = notif?.body.toString();
var img = notif?.android?.imageUrl.toString();
if (notiEnable!) {
(img != null)
? generateImageNotication(title!, msg!, img, '')
: generateSimpleNotication(title!, msg!, '');
}
}
setPrefrenceBool(ISFROMBACK, false);
}
});
FirebaseMessaging.onMessageOpenedApp.listen((RemoteMessage message) async {
print("message******$message");
if (message.data != null) {
var data = message.data;
var notif = message.notification;
if (data['type'] == "default" || data['type'] == "category") {
var title = data['title'].toString();
var body = data['message'].toString();
var image = data['image'];
var payload = data["news_id"];
if (payload == null) {
payload = "";
} else {
payload = payload;
}
if (image != null && image != "") {
if (notiEnable!) {
generateImageNotication(title, body, image, payload);
}
} else {
if (notiEnable!) {
generateSimpleNotication(title, body, payload);
}
}
} else {
//Direct Firebase Notification
var title = notif?.title.toString();
var msg = notif?.body.toString();
var img = notif?.android?.imageUrl.toString();
if (notiEnable!) {
(img != null)
? generateImageNotication(title!, msg!, img, '')
: generateSimpleNotication(title!, msg!, '');
}
}
}
setPrefrenceBool(ISFROMBACK, false);
});
}
void iOSPermission() async {
await messaging.setForegroundNotificationPresentationOptions(
alert: true,
badge: true,
sound: true,
);
}
//when open dynamic link news index and id can used for fetch specific news
Future<void> getNewsById(
String id,
String index,
) async {
var param = {
NEWS_ID: id,
ACCESS_KEY: access_key,
// ignore: unnecessary_null_comparison
USER_ID: CUR_USERID != null && CUR_USERID != "" ? CUR_USERID : "0",
LANGUAGE_ID: CUR_LANGUAGE_ID
};
var apiName = getNewsByIdApi;
http.Response response = await http
.post(Uri.parse(apiName), body: param, headers: headers)
.timeout(Duration(seconds: timeOut));
var getdata = json.decode(response.body);
String error = getdata["error"];
if (error == "false") {
var data = getdata["data"];
List<News> news = [];
news = (data as List).map((data) => new News.fromJson(data)).toList();
Navigator.of(context).push(MaterialPageRoute(
builder: (BuildContext context) => NewsDetails(
model: news[0],
index: int.parse(index),
id: news[0].id,
isDetails: true,
news: [],
)));
}
}
selectNotificationPayload(String? payload) async {
if (payload != null && payload != "") {
debugPrint('notification payload: $payload');
getNewsById(payload, "0");
} else {
Navigator.push(
context,
MaterialPageRoute(builder: (context) => MyApp()),
);
}
}
}
I searched so much in the firebase documentation and couldn't find anything that could help me with the issue.
I would appreciate your help

Answer 1

I inserted the following line into the main.dart file
And I got the notification content in the terminal.
Hope this helps people in the future
Future<void> _firebaseMessagingBackgroundHandler(RemoteMessage message) async {
await Firebase.initializeApp();
print('Handling a background message ${message.notification?.body}');
}