UIWebView - Autoresize so that no scrolling (in the webView itself) is needed

Question

I'm trying to use a UIWebView for displaying content higher than the screen of the iPhone, without needing to scroll in the UIWebView itself.

The UIWebView is placed as a subview to a UIScrollView, along with some other objects that I want the UIScrollView to scroll up and down with the UIWebView.

I know you can do this with a UITextView like this:

CGRect frame = _textView.frame; frame.size.height = _textView.contentSize.height; _textView.frame = frame;

But the UIWebView does not inherit from UIScrollView and does therefore not contain the contentSize-property.

I'd really like to keep it a UIWebView, because the data I get is in HTML-blocks.

Thank you!

Answer 1

In fact, no Javascript is needed! In UIView there is a nice method:

- (CGSize)sizeThatFits:(CGSize)size

You pass it anything (not really meaningful here), and it returns the size it'd like to be, using its content (subviews, etc) to compute the size.

Of course, since content loading in a UIWebView in asynchronous, you should do this after the webview has loaded, for instance in the UIWebViewDelegate method:

- (void)webViewDidFinishLoad:(UIWebView *)webView
{
    CGSize size = [webView sizeThatFits: CGSizeMake(1.0f, 1.0f)]; // Pass about any size
    CGRect frame = webView.frame;
    frame.size.height = size.height;
    webView.frame = frame;
}

Et voila!