52

I am trying to send notification from Java Rest Api (using Firebase Admin sdk) to my Flutter application and it seems it requires device token to send notification and I cannot find how to get that token. I am new to Flutter and android and may be missing any of the crucial step. Please help me if you can. Thanks.

KENdi
  • 7,576
  • 2
  • 16
  • 31
ajay datla
  • 703
  • 1
  • 5
  • 12
  • @KENdi i will wan to know if you were able to get result on this, and if you do, i appreciate if you can assist me – Anana Aristotle Sep 03 '19 at 14:15
  • Use rest API instead. https://arkapp.medium.com/flutter-fcm-rest-api-7719925f2e3e – abdul rehman Apr 15 '21 at 02:45
  • @abdulrehman I have followed your suggested link https://arkapp.medium.com/flutter-fcm-rest-api-7719925f2e3e but notification does not have any sound. Could you please suggest me what is mean of 'default' sound? Can we change it with custom sound line 'blink.wav', 'alert.mp3'? Thanks a lot. – Kamlesh Sep 06 '21 at 13:26

5 Answers5

80

With firebase_messaging: ^10.0.0, you can directly get the token using

String? token = await FirebaseMessaging.instance.getToken();

or

FirebaseMessaging.instance.getToken().then((value) {
  String? token = value;
});
CopsOnRoad
  • 237,138
  • 77
  • 654
  • 440
56

Add this to your package's pubspec.yaml file:

dependencies:
  firebase_messaging: ^6.0.16

You can install packages from the command line:

with Flutter:

$ flutter packages get

Now in your Dart code, you can use:

import 'package:firebase_messaging/firebase_messaging.dart';

Implementation:

FirebaseMessaging _firebaseMessaging = FirebaseMessaging();



@override
void initState() {
  super.initState();
  firebaseCloudMessaging_Listeners();
}

void firebaseCloudMessaging_Listeners() {
  if (Platform.isIOS) iOS_Permission();

  _firebaseMessaging.getToken().then((token){
    print(token);
  });

  _firebaseMessaging.configure(
    onMessage: (Map<String, dynamic> message) async {
      print('on message $message');
    },
    onResume: (Map<String, dynamic> message) async {
      print('on resume $message');
    },
    onLaunch: (Map<String, dynamic> message) async {
      print('on launch $message');
    },
  );
}

void iOS_Permission() {
  _firebaseMessaging.requestNotificationPermissions(
      IosNotificationSettings(sound: true, badge: true, alert: true)
  );
  _firebaseMessaging.onIosSettingsRegistered
      .listen((IosNotificationSettings settings)
  {
    print("Settings registered: $settings");
  });
}

For more details step by information please refer this link

Hope this helps you

Rahul Mahadik
  • 11,668
  • 6
  • 41
  • 54
  • It's working except when app is open do you have any suggestion to solve that in flutter – Shashank Pujari Mar 30 '19 at 09:15
  • 3
    In order to show the notification even when the app is open or is running, you can use the flutter_local_notifications dependency. Please check this git repo for more info https://github.com/nitishk72/firebase_messaging_flutter/blob/master/lib/main.dart – nike Jul 02 '19 at 09:07
  • I tried same as flutter doc of FirebaseMessaging. I even cloned the sample project from flutter's github.But i still get null with getToken.This is what I get in log: W/FirebaseInstanceId( 4066):Token retrieval failed:SERVICE_NOT_AVAILABLE. Will retry token retrieval W/FA ( 4066): Failed to retrieve Firebase Instance Id E/FirebaseInstanceId( 4066): Failed to get FIS auth token I/FA ( 4066): Tag Manager is not found and thus will not be used W/FirebaseMessagingPlugin( 4066): getToken, error fetching instanceID: W/FirebaseMessagingPlugin( 4066): java.io.IOException: AUTHENTICATION_FAILED – Prabesh Mar 14 '20 at 10:34
  • Use Snackbar for notification when an app is open. – GunJack Jun 26 '20 at 23:24
  • I recommend using overlay_support it has a fancy look and easy to implement https://pub.dev/packages/overlay_support – Mohammed Fadhl Mar 17 '21 at 13:17
  • @rahul Rahul - could you please update your answer as per latest version of firebase fcm package? which will help me and other users. Thanks a lot. – Kamlesh Sep 01 '21 at 06:44
7

As you can the use the firebase Messaging Plugin to send the Notification. Through this code you can print the Token in Console. 

final FirebaseMessaging _firebaseMessaging = FirebaseMessaging();
_firebaseMessaging.configure(
    onLaunch: (Map<String, dynamic> message) {
      print('onLaunch called');
    },
    onResume: (Map<String, dynamic> message) {
      print('onResume called');
    },
    onMessage: (Map<String, dynamic> message) {
      print('onMessage called');
    },
  );
  _firebaseMessaging.subscribeToTopic('all');
  _firebaseMessaging.requestNotificationPermissions(IosNotificationSettings(
    sound: true,
    badge: true,
    alert: true,
  ));
  _firebaseMessaging.onIosSettingsRegistered
      .listen((IosNotificationSettings settings) {
    print('Hello');
  });
  _firebaseMessaging.getToken().then((token) {
    print(token); // Print the Token in Console
  });
}
Rafa0809
  • 1,733
  • 21
  • 24
Neha Bhardwaj
  • 1,275
  • 10
  • 13
4

We need to add this package in pubspec.yaml file

firebase_messaging: ^4.0.0+1

Perform packages get

Now import this in your code

import 'package:firebase_messaging/firebase_messaging.dart';

Create instance of FirebaseMessaging

  FirebaseMessaging _firebaseMessaging = FirebaseMessaging();

Now we just to add the function which I have created in the answer in the link below

https://stackoverflow.com/a/60523014/11887774

Aman Raj Srivastava
  • 294
  • 3
  • 5
-10

I am not clear your question though. For FCM you have to extend FirebaseMessagingService.

Example:

class PNPFirebaseMessagingService : FirebaseMessagingService() {
  override fun onNewToken(token: String?) {
     // you can collect token from here
  }
}
Farid Haq
  • 3,728
  • 1
  • 21
  • 15