How to hide a UIView completely when changing orientation?

Question

I want to design a view/view controler that automaticaly shows/hides a subview when in landscape orientation. I want the subview to dissapear completely and other subviews to take up its space.

Using a UIViewController, I wrote code that sets the subviews' frame property and call it on:

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

This solves the problem most of the times but has problems when the orientation change is happening when the view is not appearing. to bypass this, I am also calling the resizing method on:

- (void)viewWillAppear:(BOOL)animated;

but this has problems in some rare cases (involving a UISearchDisplayController) so I am also calling the resizing method on

- (void)viewDidAppear:(BOOL)animated;

As you can understand, I am unhappy with this code and I am looking for a better/more performant way to do this.

Any ideas?

Answer 1

Assuming all you have is a UIWebView and an ad banner, then you can just manually resize the webView when in landscape:

- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toOrientation 
                                duration:(NSTimeInterval)duration
{
    if (toOrientation == UIInterfaceOrientationPortrait ||
        toOrientation == UIInterfaceOrientationPortraitUpsideDown) {
            [adView setHidden:NO];
        }
    } else {
        if (toOrientation == UIInterfaceOrientationLandscapeLeft ||
            toOrientation == UIInterfaceOrientationLandscapeRight) {
            [adView setHidden:YES];
        }       
    }
}

Then also do

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromOrientation 
                                duration:(NSTimeInterval)duration
{
    UIInterfaceOrientation toOrientation = self.interfaceOrientation;
    if (toOrientation == UIInterfaceOrientationPortrait ||
        toOrientation == UIInterfaceOrientationPortraitUpsideDown) {
            [webView setBounds:CGRectMake(0.0,0.0,320.0,436.0)];
        }
    } else {
        if (toOrientation == UIInterfaceOrientationLandscapeLeft ||
            toOrientation == UIInterfaceOrientationLandscapeRight) {
            [webView setBounds:CGRectMake(0.0,0.0,480.0,320.0)];
        }       
    }
}

The dimensions assume 44.0 height for the ad banner and no nav bar (44.0) or status bar (20.0), so you may need to adjust the numbers for your layout.