I would recommend learning C# (.NET), one of my brothers is coding for mobile devices and raking the money in from consulting (www.opennetcf.com). Then again, he has spent years being the "geek" and coding through the night to get to this stage.

Some people are natural coders, others aren't. I would advise not even bothering getting into the industry unless you really have a passion for it, otherwise where's the job satisfaction going to come from?