CustomContentSmallAndBig.java

Notification.Builder builder = new Notification.Builder(context)
        .setSmallIcon(R.drawable.ic_phonelink_ring_primary_24dp)
        .setCustomContentView(remoteView)
        .setCustomBigContentView(bigRemoteView)
        .setStyle(new Notification.DecoratedCustomViewStyle());
        .setAutoCancel(true);