Android :: How To Delete Delayed Messages Before They Arrive At Handler?

My Problem is that I need to send messages with a delay of 1 second. The handler then initiates some action, you're getting the picture. There are nevertheless some conditions in which the already sent message should be deleted ( before the second elapsed ) to prevent the handler from doing anything. I couldn't figure out how to do this ( or if it's even possible ), so If anyone of you has a clue, please let me know.