Question

I try to export web pages to image in order to share it to some social network which not allow to input too many words. When I try to render the layer of scrollview of UIWebview to the current context and create a image, just snap the visible rect of the page. How can I do it? Thank your very much!

Answer 1

 NSString *hStr = [web stringByEvaluatingJavaScriptFromString:@"document.body.scrollHeight;"];//get the height
NSString *wtStr = [web stringByEvaluatingJavaScriptFromString:@"document.body.scrollWidth;"];// Get the width
        web.frame=CGRectMake(0, 0, [wtStr floatValue], [hStr floatValue]);
        UIGraphicsBeginImageContext(CGSizeMake(web.frame.size.width,web.frame.size.height));
        CGContextRef ctx = UIGraphicsGetCurrentContext();
        [web.layer renderInContext:ctx];
        UIImage *finalimage = UIGraphicsGetImageFromCurrentImageContext();
        UIGraphicsEndImageContext();

try setting the webviews height and width according to the pages width and height and then take the screenshot