Firebase Push Notifications Custom Sound

Custom sound in Firebase push notification

I was also looking for the solution to custom sound for firebase notification in the android, And I have solved this problem through Notification Channel.

I have created one notification channel with custom sound, that sound plays after receiving notification in the application background state.

You can refer following links of the notification channel.

https://medium.com/exploring-android/exploring-android-o-notification-channels-94cd274f604c

https://developer.android.com/training/notify-user/channels

You need to put your mp3 file at /res/raw/ path.

Please find the code.

NotificationManager notificationManager = (NotificationManager) getActivity().getSystemService(NotificationManager.class); // If you are writting code in fragment

OR

NotificationManager notificationManager = (NotificationManager) getSystemService(NotificationManager.class); // If you are writting code in Activity

createNotificationChannel function

private void createNotificationChannel() { 
 Uri sound = Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://" + context.getPackageName() + "/" + R.raw.sample); //Here is FILE_NAME is the name of file that you want to play 
// Create the NotificationChannel, but only on API 26+ because 
// the NotificationChannel class is new and not in the support library if 
(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) 
 { 
    CharSequence name = "mychannel"; 
    String description = "testing"; 
    int importance = NotificationManager.IMPORTANCE_DEFAULT; 
    AudioAttributes audioAttributes = new AudioAttributes.Builder() 
     .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION) 
     .setUsage(AudioAttributes.USAGE_ALARM) 
     .build(); 
   NotificationChannel channel = new NotificationChannel("cnid", name, importance); 
   channel.setDescription(description); 
   channel.enableLights(true); channel.enableVibration(true); 
   channel.setSound(sound, audioAttributes); 
   notificationManager.createNotificationChannel(channel); 
  } 
};

createNotificationChannel(); 

To achieve this you need to pass android_channel_id property in the firebase notification request object.

{
 "notification": {
 "body": "this is testing notification",
 "title": "My App",
 "android_channel_id": "cnid"
 },
 "to": "token"
}

How to send Push Notifications with custom sounds via the Firebase FCM Console

Once you have compiled your app with the sound notification in your app's resource folder
You can then use the Notification Composer to send custom payloads from the Firebase Console, including sound settings in the custom payload as key:value.

Documentation: https://firebase.google.com/docs/cloud-messaging/js/send-with-console#about

You can also invoke FCM with cloud functions with this kind of payload

"message":{
  "token":"ewrTK.....",
  "notification":{
     "title":"Breaking News",
     "body":"New news story available."
  },
  "data":{
     "title":"Notification title",
     "body":"Notfication body"
  },
  "apns":{
     "payload":{
        "aps":{
           "sound":"notification.mp3"
        }
     }
  }
}

No custom sound with Android Firebase Notification

Finally I found the solution. For Android 8.0 and higher it's necessary to create a notification channel in your App:

NotificationChannel channel = new NotificationChannel('my_id', name, importance);

(more info: https://developer.android.com/training/notify-user/channels#java)

Then when you send the notification:

var registrationToken = 'xxxxxx';

var message = {

    notification: {
      title: 'my title',
      body: 'my body',
    },
    android: {
      ttl: 3600 * 1000,
      notification: {
        color: '#ff0000',
        sound: 'mysound.mp3',
        channel_id: 'my_id' // important to get custom sound
      }
    }, 
    token: registrationToken

};

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