How to change the height of webView dynamically?

Question

I\'m currently using webView to display news,below the news I intend to put some buttons.so I need to get the height of webView so as to change the position of buttons accor

Answer 1

According to your device type like iPhone 4 or iPhone 5 you can set your webview
The web view has finished loading.
    - (void)webViewDidFinishLoad:(UIWebView *)webView {

        [DejalActivityView removeView];

        if ([objSpineCustomProtocol windowHeight] == 480) {

            termsWebView.frame = CGRectMake(termsWebView.frame.origin.x
                                            ,termsWebView.frame.origin.y
                                            ,termsWebView.frame.size.width
                                            ,350);

        }

    }// End of Method webViewDidFinishLoad

//VKJ

Answer 2

Do this inside the delegate method webViewDidFinishLoad:

- (void)webViewDidFinishLoad:(UIWebView *)aWebView
{
    CGFloat height = [[aWebView stringByEvaluatingJavaScriptFromString:@"document.height"] floatValue];
    CGFloat width = [[aWebView stringByEvaluatingJavaScriptFromString:@"document.width"] floatValue];
    aWebView.frame = CGRectMake(aWebView.frame.origin.x,aWebView.frame.origin.y,width, height);
}

Answer 3

try this

    - (void)webViewDidFinishLoad:(UIWebView *)webView
    {
        NSString *string = [_webView stringByEvaluatingJavaScriptFromString:@"document.getElementById(\"body\").offsetHeight;"];
        CGFloat height = [string floatValue] + 8;
        CGRect frame = [_webView frame];
        frame.size.height = height;
        [_webView setFrame:frame];

        if ([[self delegate] respondsToSelector:@selector(webViewController:webViewDidResize:)])
        {
            [[self delegate] webViewController:self webViewDidResize:frame.size];
        }
    }

Answer 4

The webView has method sizeThatFits: which returns the size of content once the webView is added in a view hierarchy and finished loading the html.

But this does not work without a caveat. You need to set the frame of webview to a low value before calling the fitting size method.

For eg: If you have a fixed width and variable height

//Set a very low height
CGRect webViewFrame = self.webView.frame;
webViewFrame.size.height = 5.0f;
self.webView.frame = webViewFrame;
//Re calculate the size that fits
CGSize size = [self.webView sizeThatFits:webViewFrame.size];
self.webViewFrame.size = size;
self.webView.frame = webViewFrame;

PS: I want to give credit to the original work. I'm still searching in SO