SplitNavigationBanner/SplitNavigationBanner/BannerViewController.m

/*
     File: BannerViewController.m
 Abstract: A container view controller that manages an ADBannerView and a content view controller.
  Version: 1.2
 
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 */
 
#import "BannerViewController.h"
 
NSString * const BannerViewActionWillBegin = @"BannerViewActionWillBegin";
NSString * const BannerViewActionDidFinish = @"BannerViewActionDidFinish";
 
@interface BannerViewController () <ADBannerViewDelegate>
 
@property (nonatomic, strong) ADBannerView *bannerView;
@property (nonatomic, strong) UIViewController *contentController;
 
@end
 
@implementation BannerViewController
 
- (void)viewDidLoad
{
    [super viewDidLoad];
    
    // on iOS 6 ADBannerView introduces a new initializer, use it when available
    if ([ADBannerView instancesRespondToSelector:@selector(initWithAdType:)])
    {
        _bannerView = [[ADBannerView alloc] initWithAdType:ADAdTypeBanner];
    }
    else
    {
        _bannerView = [[ADBannerView alloc] init];
    }
    self.bannerView.delegate = self;
    
    [self.view addSubview:_bannerView];
    
    _contentController = self.childViewControllers[0];  // remember who our content child is
}
 
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return [self.contentController preferredInterfaceOrientationForPresentation];
}
 
- (NSUInteger)supportedInterfaceOrientations
{
    return [self.contentController supportedInterfaceOrientations];
}
 
- (void)viewDidLayoutSubviews
{
    CGRect contentFrame = self.view.bounds, bannerFrame = CGRectZero;
    
    // Ask the banner for a size that fits into the layout area we are using.
    // At this point in this method contentFrame=self.view.bounds, so we'll use that size for the layout.
    bannerFrame.size = [self.bannerView sizeThatFits:contentFrame.size];
    
    if (self.bannerView.bannerLoaded) {
        contentFrame.size.height -= bannerFrame.size.height;
        bannerFrame.origin.y = contentFrame.size.height;
    } else {
        bannerFrame.origin.y = contentFrame.size.height;
    }
    self.contentController.view.frame = contentFrame;
    self.bannerView.frame = bannerFrame;
}
 
 
#pragma mark - ADBannerViewDelegate
 
- (void)bannerViewDidLoadAd:(ADBannerView *)banner
{
    [UIView animateWithDuration:0.25 animations:^{
        // viewDidLayoutSubviews will handle positioning the banner view so that it is visible.
        // You must not call [self.view layoutSubviews] directly.  However, you can flag the view
        // as requiring layout...
        [self.view setNeedsLayout];
        // ... then ask it to lay itself out immediately if it is flagged as requiring layout...
        [self.view layoutIfNeeded];
        // ... which has the same effect.
    }];
}
 
- (void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error
{
    NSLog(@"didFailToReceiveAdWithError %@", error);
    
    [UIView animateWithDuration:0.25 animations:^{
        // viewDidLayoutSubviews will handle positioning the banner view so that it is visible.
        // You must not call [self.view layoutSubviews] directly.  However, you can flag the view
        // as requiring layout...
        [self.view setNeedsLayout];
        // ...then ask it to lay itself out immediately if it is flagged as requiring layout...
        [self.view layoutIfNeeded];
        // ...which has the same effect.
    }];
}
 
- (BOOL)bannerViewActionShouldBegin:(ADBannerView *)banner willLeaveApplication:(BOOL)willLeave
{
    [[NSNotificationCenter defaultCenter] postNotificationName:BannerViewActionWillBegin object:self];
    return YES;
}
 
- (void)bannerViewActionDidFinish:(ADBannerView *)banner
{
    [[NSNotificationCenter defaultCenter] postNotificationName:BannerViewActionDidFinish object:self];
}
 
@end