How to get the drawing on a UIScrollView

UIGraphicsBeginImageContext(drawingViewController.imageView.frame.size);

drawingViewController.imageView.layer renderInContext:UIGraphicsGetCurrentContext()];

UIImage *finishedPic = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

UIImageWriteToSavedPhotosAlbum(self, @selector(exitProg:didFinishSavingWithError:contextInfo:), nil);