Convert UIWebview contents to a UIImage

Question

I am using a UIWebView to display HTML formatted text. I am not loading a webpage, just supplying a string of HTML to the UIWebView.

Now I want to animate this UIWe

Answer 1

I could be wrong but if you set the cache param of CoreAnimation the OS will handle this optimisation for you.

e.g.

[UIView setAnimationTransition:transition forView:self.view cache:YES];

Answer 2

UIGraphicsBeginImageContext(webview.bounds.size);
[webview.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

You might run into issues if the webview dimensions are large because the webview uses a CATiledLayer that doesn't draw everything for memory reasons.

The image will include transparency