Remove notification after clicking

I want that the notification will be closed after the user is clicking on it. I saw that everybody saying to use flags, but I can't find the flags anywhere because I'm using NotificationCompat.Builder class and not Notification class. Someone have any idea how to make the notification remove by her self?
Here is my code when I'm setting the notification:

NotificationCompat.Builder mBuilder =
	        new NotificationCompat.Builder(this)
	        .setSmallIcon(R.drawable.ic_launcher)
	        .setContentTitle("New Question")
	        .setContentText("" + QuestionData.getAuthor().getUserName() + ": " + QuestionData.getQuestion() + "");
			
	Intent openHomePageActivity = new Intent("com.example.ihelp.HOMEPAGEACTIVITY");
	TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
	stackBuilder.addNextIntent(openHomePageActivity);
	
	PendingIntent resultPendingIntent =
	        stackBuilder.getPendingIntent(
	            0,
	            PendingIntent.FLAG_UPDATE_CURRENT
	        );
	mBuilder.setContentIntent(resultPendingIntent);
	NotificationManager mNotificationManager =
	    (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);    	
	
	mNotificationManager.notify(0, mBuilder.build());

Easy, simply call this:

mBuilder.setAutoCancel(true);

Also, while it's not really necessary, if you really want to use FLAG_AUTO_CANCEL, just call this before you call mNotificationManager.notify:

mBuilder.build().flags |= Notification.FLAG_AUTO_CANCEL;

Try this....

NotificationManager mNotificationManager =
    (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

 ..........
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
			this).setSmallIcon(R.drawable.push_notify_icon)
			.setContentTitle("New Question!")
			.setStyle(new NotificationCompat.BigTextStyle().bigText(msg))
			.setAutoCancel(true).setContentText("" + QuestionData.getAuthor().getUserName() + ": " + QuestionData.getQuestion() + "");
mBuilder.setContentIntent(contentIntent);

    ..............        


mBuilder.getNotification().flags |= Notification.FLAG_AUTO_CANCEL;
mNotificationManager.notify(0, mBuilder.build());

Here is notification:

    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
            .setSmallIcon(R.drawable.ic_calendar)
            .setContentTitle("My Firebase Push notification")
            .setContentText(message)
            .setAutoCancel(true)
            .setSound(soundUri)
            .setContentIntent(pendingIntent);

the key behind cancellation on click is:

            .setAutoCancel(true)

i hope it resolves the matter.

You can add a flag to your notification:

http://developer.android.com/reference/android/app/Notification.html#FLAG_AUTO_CANCEL

This will dismiss it upon clicking.

In kotlin, you can use:

mBuilder.build().flags.and(Notification.FLAG_AUTO_CANCEL)