Question

I have this code:

CGRect visibleRect;
visibleRect.origin = mainViewController.scrollView.contentOffset;
visibleRect.size = mainViewController.scrollView.bounds.size;

I want to store the content inside visibleRect in a UIImage. Is that possible?

Answer 1

This code may work:

UIGraphicsBeginImageContext(visibleRect.size);
CGContextTranslateCTM(UIGraphicsGetCurrentContext(), visibleRect.origin.x,
    visibleRect.origin.y);
[mainViewController.scrollView.layer 
    renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();