Add controllers for android

Hello i made a game for pc ( Dropbox ) and i want to add controllers in order to run in android too . Can someone give me a tutorial or something like this please ? i just want 4 or 5 buttons in order to move around .
Thanks

Well i dont think some one will make it for u well u need to do your self that time u will learn more stuff. U have so much tutorials on youtube and i was asking for contollers and i had to do my slef no one here was wanted to help.