Obj-C Category for adding iAds to UIViewController

UIViewController+iAd.h

//
//  UIViewController+iAd.h
//
//  Created by James Cryer on 04/10/2012.
//
//

#import <UIKit/UIKit.h>
#import "iAd/iAd.h"

@interface UIViewController (iAd)

- (int)getBannerHeight:(UIDeviceOrientation)orientation;
- (int)getBannerHeight;
- (ADBannerView *)bannerViewWithDelegate:(id)delegate;
- (void)animateContentForAd:(ADBannerView *)adBannerView contentView:(UIView *)contentView atOrientation:(UIDeviceOrientation)orientation andVisible:(BOOL)visible;

@end

UIViewController+iAd.m

//
//  UIViewController+iAd.m
//
//  Created by James Cryer on 04/10/2012.
//
//

#import "UIViewController+iAd.h"

@implementation UIViewController (iAd)

- (int)getBannerHeight:(UIDeviceOrientation)orientation {
    if (UIInterfaceOrientationIsLandscape(orientation)) {
        return 32;
    } else {
        return 50;
    }
}

- (int)getBannerHeight {
    return [self getBannerHeight:[UIDevice currentDevice].orientation];
}

- (ADBannerView *)bannerViewWithDelegate:(id)delegate {
    ADBannerView *adBannerView = [[ADBannerView alloc] initWithFrame:CGRectZero];
    [adBannerView setRequiredContentSizeIdentifiers:[NSSet setWithObjects:
                                                     ADBannerContentSizeIdentifierPortrait,
                                                     ADBannerContentSizeIdentifierLandscape, nil]];
    
    if (UIInterfaceOrientationIsLandscape([UIDevice currentDevice].orientation)) {
        [adBannerView setCurrentContentSizeIdentifier:ADBannerContentSizeIdentifierLandscape];
    } else {
        [adBannerView setCurrentContentSizeIdentifier:ADBannerContentSizeIdentifierPortrait];
    }
    [adBannerView setFrame:CGRectOffset([adBannerView frame], 0, self.view.frame.size.height + [self getBannerHeight])];
    [adBannerView setBackgroundColor:[UIColor clearColor]];
    [adBannerView setDelegate:delegate];
    [self.view addSubview:adBannerView];
    
    return adBannerView;
}

- (void)animateContentForAd:(ADBannerView *)adBannerView contentView:(UIView *)contentView atOrientation:(UIDeviceOrientation)orientation andVisible:(BOOL)visible
{
    if (UIInterfaceOrientationIsLandscape(orientation)) {
        [adBannerView setCurrentContentSizeIdentifier:ADBannerContentSizeIdentifierLandscape];
    } else {
        [adBannerView setCurrentContentSizeIdentifier:ADBannerContentSizeIdentifierPortrait];
    }
    CGRect superViewFrame = self.view.frame;
    CGRect contentViewFrame = contentView.frame;
    CGRect adBannerViewFrame = [adBannerView frame];
    
    [UIView beginAnimations:@"animateView" context:nil];
    if (visible) {
        adBannerViewFrame.origin.y = superViewFrame.size.height - [self getBannerHeight:orientation];
        [adBannerView setFrame:adBannerViewFrame];
        contentViewFrame.size.height = superViewFrame.size.height - [self getBannerHeight:orientation];
        contentView.frame = contentViewFrame;
    } else {
        adBannerViewFrame.origin.y = -[self getBannerHeight:orientation];
        [contentView setFrame:adBannerViewFrame];
        contentViewFrame.origin.y = 0;
        contentViewFrame.size.height = superViewFrame.size.height;
        contentView.frame = contentViewFrame;
    }
    [UIView commitAnimations];
}

@end