I have created a notification method as shown below:
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    Notification notification;
        notification = new Notification(R.drawable.messageicon, "You have a new message",
                System.currentTimeMillis());
        notification.flags |= Notification.FLAG_AUTO_CANCEL;
        RemoteViews view = new RemoteViews(getPackageName(), R.layout.notification);
        view.setImageViewResource(R.id.image, R.drawable.ic_launcher);
        view.setTextViewText(R.id.title, "New Message");
        view.setTextViewText(R.id.text, message);
        notification.contentView = view;
        Intent intent = new Intent();
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
        PendingIntent activity = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
        notification.contentIntent = activity;
        notificationManager.notify(0, notification);
I want to add a button on status bar and on click of the button a pop-up should be displayed. Any help would be highly appreciated.