Android O - Single line Notification - like the “Android System - USB charging this device”

Question

I would like to have an ongoing notification for my ForegroundService that requires as small place as possible. I like the "Android System - USB charging t

Answer 1

I made the size of foreground service notification smaller by creating an empty custom view like this:

and then creating the notification like this:

RemoteViews notifiactionCollapsed = new RemoteViews(getPackageName(),R.layout.notification_collapsed);
    Notification notification = new NotificationCompat.Builder(this,CHANNEL_ID)
            .setSmallIcon(R.drawable.eq_icon)
            .setCustomContentView(notifiactionCollapsed)
            .setStyle(new NotificationCompat.DecoratedCustomViewStyle())
            .setShowWhen(false)
            .setContentIntent(pendingIntent)
            .setPriority(NotificationCompat.PRIORITY_LOW)
            .setOngoing(true)
            .setVisibility(NotificationCompat.VISIBILITY_SECRET)
            .build();
    startForeground(Constants.NOTIFICATION_ID.FOREGROUND_SERVICE,
            notification);

This helps in reducing the height of the notification but still I am not sure about how to hide the notification icon.