Cannot resolve Method "builder()"

Question

I want to send notifications to topics with FCM without using the Firebase console. When I build a new message with the help of Firebase Documentation it´sa problem.

Picture of the problem

Here my Codes:

 public void sendToTopic() {

        Message message = Message.builder()
                .putData("score", "850")
                .putData("time", "2:45")
                .setTopic("1")
                .build();


    }

public class MyFirebaseMessagingService extends FirebaseMessagingService {


    private static final String TAG = "MyFirebaseMsgService";
    public void onMessageReceived(RemoteMessage remoteMessage) {

    }


    private void sendNotification(String messageBody) {
        Intent intent = new Intent(this, MainActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
                PendingIntent.FLAG_ONE_SHOT);

        String channelId = ("asda");
        Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder notificationBuilder =
                new NotificationCompat.Builder(this, channelId)
                        .setSmallIcon(R.drawable.book_icon)
                        .setContentTitle("Test")
                        .setContentText(messageBody)
                        .setAutoCancel(true)
                        .setSound(defaultSoundUri)
                        .setContentIntent(pendingIntent);

        NotificationManager notificationManager =
                (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

        // Since android Oreo notification channel is needed.
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            NotificationChannel channel = new NotificationChannel(channelId,
                    "Channel human readable title",
                    NotificationManager.IMPORTANCE_DEFAULT);
            notificationManager.createNotificationChannel(channel);
        }

        notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
    }

}

Answer 1

The Message class is inside the Firebase admin sdk but you cannot use that in your android project, you can only use firebase admin sdk in the server side and there you will be able to use the Message class. Check the docs for reference:-

https://firebase.google.com/docs/cloud-messaging/manage-topics