Android NotificationListenerService onNotificationPosted fire twice

Question

I listen for notifications like WhatsApp Messages.

But every time a notification comes in the NotificationListenerService fire twice.

Does anyone know this p

Answer 1

This issue happened to me too. My workaround is to use notification's time + (notification's title + notification's text) as two keys.

If time is not older than 1 sec and similar title + text then ignore.

if (Calendar.getInstance().getTimeInMillis() - lastMessageTime < 1000 && lastMessageContent.equalsIgnoreCase(title + text)) {
        // Ignore
        return;
    } else {
        lastMessageContent = title + text;
        lastMessageTime = Calendar.getInstance().getTimeInMillis();
    }

I worked for me but I think it may missed some notification.