UIWebView content not adjusted to new frame after rotation

Question

I have an e-mail application,
which shows the content in an UIWebView inside an UISplitViewController.
Everything works fine until i rotate the

Answer 1

This seems to be a bug also in iOS 7 and iOS 8. A fix would be this:

First resize the frame on layout changes:

- (void)viewDidLayoutSubviews {
    [super viewDidLayoutSubviews];
    _webView.frame = self.view.bounds;
}

Then on the rotation callback reset the zoomScale to 0. Yes, 0!

- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
    // Allow the animation to complete
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.3 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        [_webView.scrollView setZoomScale:0 animated:YES];
    });
}

You can also use the new function

- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator {
    // Allow the animation to complete
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.3 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        [_webView.scrollView setZoomScale:0 animated:YES];
    });
}

Answer 2

i managed to solve it by updating the viewport width after rotating the device

CGFloat fll_width = self.view.frame.size.width;
NSString* adsl_javascript_string = [NSString stringWithFormat:@"var setViewPortScript = document.createElement('meta');\
     setViewPortScript.setAttribute('name', 'viewport');\
     setViewPortScript.setAttribute('content', 'width = %f');\
     document.getElementsByTagName('head')[0].appendChild(setViewPortScript);", fll_width];
[adsc_webview stringByEvaluatingJavaScriptFromString:adsl_javascript_string];