How Do I Take a Screen Shot of a UIView?

Question

I am wondering how my iPhone app can take a screen shot of a specific UIView as a UIImage.

I tried this code but all I get is a blank image

Answer 1

Apple does not allow:

CGImageRef UIGetScreenImage();

Applications should take a screenshot using the drawRect method as specified in: http://developer.apple.com/library/ios/#qa/qa2010/qa1703.html