仅允许在UIWebView上更改方向/旋转

- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation duration:(NSTimeInterval)duration {

float navBarHeight = self.navigationController.navigationBar.frame.size.height;
float tabBarHeight = ((UITabBarController *)self.navigationController.parentViewController).tabBar.frame.size.height;

if (interfaceOrientation == UIInterfaceOrientationLandscapeLeft || interfaceOrientation == UIInterfaceOrientationLandscapeRight)
{
    float statusBarHeight = [UIApplication sharedApplication].statusBarFrame.size.height;
    [[UIApplication sharedApplication] setStatusBarHidden:YES];
    self.navigationController.navigationBar.hidden = YES;
    ((UITabBarController *)self.navigationController.parentViewController).tabBar.hidden = YES;

    // TabBarController adjustments
    self.navigationController.parentViewController.view.bounds = CGRectMake(0, -tabBarHeight/2, 480, 320 + tabBarHeight);

    // Adjust view
    self.view.frame = CGRectMake(0, -statusBarHeight - navBarHeight, 480, 320);

    // Adjust web view
    self.WebView.frame = CGRectMake(26, 0, 426.6667, 320);
}

if (interfaceOrientation == UIInterfaceOrientationPortrait)
{
    [[UIApplication sharedApplication] setStatusBarHidden:NO];
    float statusBarHeight = [UIApplication sharedApplication].statusBarFrame.size.height;
    self.navigationController.navigationBar.hidden = NO;
    ((UITabBarController *)self.navigationController.parentViewController).tabBar.hidden = NO;

    // TabBarController adjustments
    self.navigationController.parentViewController.view.bounds = CGRectMake(0, 0, 320, 480);

    // NavigationController adjustments
    self.navigationController.navigationBar.frame = CGRectMake(0, statusBarHeight, 320, navBarHeight);

    // Adjust view
    self.view.frame = CGRectMake(0, statusBarHeight + navBarHeight, 320, 480 - statusBarHeight - navBarHeight - tabBarHeight);

    // Adjust web view
    self.WebView.frame = CGRectMake(0, 0, 320, 240);
}
}