I using a Xbox 360 gamepad and is always go backwards and right is the some one I use on my xbox360 and work perfectly. What I need to do?

might be either an issue in the android driver (which i'm not familiar with) or your cable, or you haven't set things up properly in the gamepad configuration. use the Options>Advanced>Controls>Calibration screen.

Also, since your on android, make sure you turned off the tilt sensor, under Options>advanced>Controls>Tilt. It defaults to roll on tilting I think.