How to show a notification without a sound java

问题

How can I make a notification that doesn't make a sound when I build it? I am building a notification, and my users don't like the fact that it makes a sound.

How can I change it to a silent one / no sound at all?

How I show notification:

android.support.v7.app.NotificationCompat.Builder builder = new android.support.v7.app.NotificationCompat.Builder(main);
builder.setStyle(new android.support.v7.app.NotificationCompat.BigTextStyle().bigText(text));
builder.setSmallIcon(R.drawable.app);
builder.setContentTitle("Rooster Maandag:");
builder.setOngoing(false);
builder.setAutoCancel(true);
builder.setDefaults(Notification.DEFAULT_ALL);
builder.setVisibility(NotificationCompat.VISIBILITY_PUBLIC);
builder.setPriority(NotificationCompat.PRIORITY_DEFAULT);
notificationManager = (NotificationManager) main.getSystemService(main.NOTIFICATION_SERVICE);
notificationManager.notify(NOTIFICATION_ID, builder.build());

I tried to search on google, but the only results I get is HOW to play a sound, not HOW to not play a sound...

Edit It possibly is a duplicate in some people's eyes, but in mine I could not find out an alternative for the there specified default, while this new method is called setDefaults

回答1:

Remove the line to builder.setDefaults(Notification.DEFAULT_ALL);. It will not play the sound, but you may need to enable all other notification defaults if preferred

回答2:

To disable the sound in OREO 8.1, change the priority of the notification as LOW and it will disable the sound of notification:

NotificationManager.IMPORTANCE_LOW

The code is like:

NotificationChannel chan1 = new NotificationChannel("default", "default", NotificationManager.IMPORTANCE_LOW);

回答3:

It works for me in Android Oreo.

You should just write your channel like this:

NotificationChannel notificationChannel = new NotificationChannel("Id" , "Name", NotificationManager.IMPORTANCE_DEFAULT);
            notificationChannel.setSound(null, null);
            notificationChannel.setShowBadge(false);
            notificationManager.createNotificationChannel(notificationChannel);

回答4:

In android O, for me it worked with this settings in the notification:

                .setGroupAlertBehavior(GROUP_ALERT_SUMMARY)
                .setGroup("My group")
                .setGroupSummary(false)
                .setDefaults(NotificationCompat.DEFAULT_ALL)

回答5:

I might be late but still wants to add this . You can disable sound using .setSound(null) on NotificationCompat.Builder builder for all OS below O.

For O version n above add channel.setSound(null,null) after creating NotificationChannel channel

All the solutions above mine is either outdated or covers some OS versions only

回答6:

Use this If you want all (sound, vibration and lights) in notifications.

builder.setDefaults(Notification.DEFAULT_ALL);

Or you can enable or disable items based on your requirements.

builder.setDefaults(Notification.DEFAULT_LIGHTS | Notification.DEFAULT_SOUND | Notification.DEFAULT_VIBRATE);

comment this line if you want nothing.

回答7:

Easy way to go to be able to show notification with any kind of priority is to set some sound that is silence actually. Just generate some silence.mp3 put it in "raw" folder and set notification sounds using Uri:

Uri.parse("android.resource://"+YOUR_APP_PACKAGE_NAME+"/"+R.raw.silence) 

You can generate this .mp3 with app like Audacity. It has option generate silence, just set how many seconds and you are good to go.

If you set defaults to 0 and set sound to null, notification will be shown without you hearing it but you wont be able to show notifications with some higher priority.

回答8:

use that exact code:

NotificationChannel chan = new NotificationChannel(NOTIFICATION_CHANNEL_ID, channelName, NotificationManager.IMPORTANCE_DEFAULT);

NOTIFICATION_CHANNEL_ID --> random String.
channelName ==> random string

来源：https://stackoverflow.com/questions/39809702/how-to-show-a-notification-without-a-sound-java