How to get ENTIRE image from UIWebView including offscreen content

Question

I have a method I use to get images from a various views in my iOS application for letting users email screens. Most of the screens where I draw are working ok, but when I u

Answer 1

Wow the answer was stupidly simple... was digging all over the place looking at various Printing/PDF related stuff... then it occurred to me, why not just set the view IN THE CONTEXT to a sizeThatFits. It worked!

WARNING: No guarantee you don't run into mem issues with this and I DO suggest you do this inside an @autoreleasepool pool and consider doing some scaling as I do in the example, but THIS WORKS and is what I settled on:

-(NSData *)getImageFromView:(UIView *)view  // Mine is UIWebView but should work for any
{
    NSData *pngImg;
    CGFloat max, scale = 1.0;
    CGSize viewSize = [view bounds].size;

    // Get the size of the the FULL Content, not just the bit that is visible
    CGSize size = [view sizeThatFits:CGSizeZero];

    // Scale down if on iPad to something more reasonable
    max = (viewSize.width > viewSize.height) ? viewSize.width : viewSize.height;
    if( max > 960 )
        scale = 960/max;

    UIGraphicsBeginImageContextWithOptions( size, YES, scale );

    // Set the view to the FULL size of the content.
    [view setFrame: CGRectMake(0, 0, size.width, size.height)];

    CGContextRef context = UIGraphicsGetCurrentContext();
    [view.layer renderInContext:context];    
    pngImg = UIImagePNGRepresentation( UIGraphicsGetImageFromCurrentImageContext() );

    UIGraphicsEndImageContext();
    return pngImg;    // Voila an image of the ENTIRE CONTENT, not just visible bit
}