Here's one rule of thumb I've been using to gauge demand. If someone's willing to hire you to use a tool even though you haven't really used it before, then the demand is there.
Another warning is that what's hot now may not be hot 5 years from now. iOS is hot right now. I'm concerned that, with Steve Jobs gone, Apple is going to implode and lose their market share. So there may be no iOS jobs 5 years from now.
Just keep sending out resumes. You'll find something eventually. It's just a numbers game.
Do you have any savings? If not, get whatever you can right now to get back. Be prepared to take something lousy and be looking to jump to something better.