How to Play an Android Notification Sound

How to play an android notification sound

If anyone's still looking for a solution to this, I found an answer at How to play ringtone/alarm sound in Android

try {
    Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    Ringtone r = RingtoneManager.getRingtone(getApplicationContext(), notification);
    r.play();
} catch (Exception e) {
    e.printStackTrace();
}

You can change TYPE_NOTIFICATION to TYPE_ALARM, but you'll want to keep track of your Ringtone r in order to stop playing it... say, when the user clicks a button or something.

How to play sometimes sound in notifications

Beginning with Android 8.0 (Oreo), it would better to set the sound or the proority in Channel. And use the two ways below instead of chan1.SetSound(null, null);.

1. Use the specific ringtone for notification.

   void CreateNotificationChannel()
   {
    if (Build.VERSION.SdkInt < BuildVersionCodes.O)
    {
        // Notification channels are new in API 26 (and not a part of the
        // support library). There is no need to create a notification 
        // channel on older versions of Android.
        return;
    }
    var alarmAttributes = new AudioAttributes.Builder()
          .SetContentType(AudioContentType.Sonification)
          .SetUsage(AudioUsageKind.Notification).Build();
    var channel = new NotificationChannel(CHANNEL_ID, "FCM Notifications", NotificationImportance.Default)
    {
        Description = "Firebase Cloud Messages appear in this channel"
    };   
      channel.SetSound(RingtoneManager.GetDefaultUri(RingtoneType.Ringtone),alarmAttributes);
    var notificationManager = (NotificationManager)GetSystemService(NotificationService);
    notificationManager.CreateNotificationChannel(channel);
   }
   

For more details, please refer to the link below. specific ringtone firebase notification xamarin.android

2. Use the custom sound for notification.

   void CreateNotificationChannel1()
   {
    if (Build.VERSION.SdkInt < BuildVersionCodes.O)
    {
        // Notification channels are new in API 26 (and not a part of the
        // support library). There is no need to create a notification 
        // channel on older versions of Android.
        return;
    }
    var alarmAttributes = new AudioAttributes.Builder()
           .SetContentType(AudioContentType.Sonification)
           .SetUsage(AudioUsageKind.Notification).Build();
   
    var path = Android.Net.Uri.Parse("android.resource://com.companyname.NotificationChannelsDemo/" + Resource.Raw.Hello);
    var name = Resources.GetString(Resource.String.channel_name);
    var description = GetString(Resource.String.channel_description);
    var channel = new NotificationChannel(CHANNEL_ID1, name, NotificationImportance.Max)
    {
        Description = description
    };
    channel.SetSound(path, alarmAttributes);
    var notificationManager = (NotificationManager)GetSystemService(NotificationService);
    notificationManager.CreateNotificationChannel(channel);
   }
   

For more info, please check the link below. Custom Notification Sound FireBase

Android Notification Sound

What was missing from my previous code:

Uri alarmSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
builder.setSound(alarmSound);

Custom Notification Sound not working in Android Oreo

To set a sound to notifications in Oreo, you must set sound on NotificationChannel and not on Notification Builder itself. You can do this as follows

Uri sound = Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE + "://" + context.getPackageName() + "/" + R.raw.notification_mp3);

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

        NotificationChannel mChannel = new NotificationChannel("YOUR_CHANNEL_ID",
            "YOUR CHANNEL NAME",
            NotificationManager.IMPORTANCE_DEFAULT)

        AudioAttributes attributes = new AudioAttributes.Builder()
                .setUsage(AudioAttributes.USAGE_NOTIFICATION)
                .build();

        NotificationChannel mChannel = new NotificationChannel(CHANNEL_ID, 
                context.getString(R.string.app_name),
                NotificationManager.IMPORTANCE_HIGH);

        // Configure the notification channel.
        mChannel.setDescription(msg);
        mChannel.enableLights(true);
        mChannel.enableVibration(true);
        mChannel.setSound(sound, attributes); // This is IMPORTANT

        if (mNotificationManager != null)
            mNotificationManager.createNotificationChannel(mChannel);
    }

This will set a custom sound to your notifications. But if the app is being updated and the notification channel is used before, it won't be updated. i.e. you need to create a different channel and set sound to it to make it work. But this will show multiple channels in the notifications section of app info of your app. If you are setting sound to an entirely new channel that is fine, but if you want the channel being used before, you have to delete the existing channel and recreate the channel. To do that you can do something like that before creating channel

if (mNotificationManager != null) {
            List<NotificationChannel> channelList = mNotificationManager.getNotificationChannels();

            for (int i = 0; channelList != null && i < channelList.size(); i++) {
                mNotificationManager.deleteNotificationChannel(channelList.get(i).getId());
            }
        }

Play notification default sound only (Android)

Uri defaultRingtoneUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

MediaPlayer mediaPlayer = new MediaPlayer();

try {
      mediaPlayer.setDataSource(context, defaultRingtoneUri);
      mediaPlayer.setAudioStreamType(AudioManager.STREAM_NOTIFICATION);
      mediaPlayer.prepare();
      mediaPlayer.setOnCompletionListener(new OnCompletionListener() {

         @Override
         public void onCompletion(MediaPlayer mp)
         {
            mp.release();
         }
      });
  mediaPlayer.start();
} catch (IllegalArgumentException e) {
 e.printStackTrace();
} catch (SecurityException e) {
 e.printStackTrace();
} catch (IllegalStateException e) {
 e.printStackTrace();
} catch (IOException e) {
 e.printStackTrace();
}

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