How to Create a Silent Notification in Java for Android

How can I create a notification in Java for Android that does not emit any sound when triggered?

builder.setDefaults(Notification.DEFAULT_LIGHTS | Notification.DEFAULT_VIBRATE); // Excludes sound

To create a notification in Android that does not make a sound, you can specify the appropriate settings in your NotificationCompat.Builder. By adjusting the defaults and removing sound settings, you ensure the notification remains silent, catering to user preferences.

android.support.v7.app.NotificationCompat.Builder builder = new android.support.v7.app.NotificationCompat.Builder(main)
    .setStyle(new android.support.v7.app.NotificationCompat.BigTextStyle().bigText(text))
    .setSmallIcon(R.drawable.app)
    .setContentTitle("Rooster Maandag:")
    .setOngoing(false)
    .setAutoCancel(true)
    .setSound(null) // This line prevents sound from playing
    .setDefaults(Notification.DEFAULT_LIGHTS | Notification.DEFAULT_VIBRATE)
    .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
    .setPriority(NotificationCompat.PRIORITY_DEFAULT);
notificationManager = (NotificationManager) main.getSystemService(main.NOTIFICATION_SERVICE);
notificationManager.notify(NOTIFICATION_ID, builder.build());

Causes

• Using Notification.DEFAULT_ALL which includes sound by default.
• Not setting defaults properly to exclude sound.

Solutions

• Use `builder.setSound(null)` to explicitly turn off sound.
• Utilize `builder.setDefaults(Notification.DEFAULT_LIGHTS | Notification.DEFAULT_VIBRATE);` to set visual cues without sound.

Mistake: Not explicitly setting sound to null, resulting in default notification sound playing.

Solution: Always use `setSound(null)` to ensure no sound is played.

Mistake: Using `setDefaults(Notification.DEFAULT_ALL)` which includes sound, causing unwanted alerts.

Solution: Use more specific defaults that omit sound.