Android : send an image as message with twitter in android

i want to send an image with text to a follower using twitter4j, now i' m able to send a direct message like this:

twitter.sendDirectMessage(twitterID, message);

now, i can't figure out to send an image as direct message, i did this without any success:

StatusUpdate status = new StatusUpdate(message);
            status.setMedia(pathOfTheFileToSend);
            twitter.updateStatus(status);

One more thing, when i send a direct message i have to put the twitter ID for the follower, why is not the same when sending images?

thanks in advance.