ContainerBanner/ContainerBanner/BannerViewController.m

/*
     File: BannerViewController.m
 Abstract: A container view controller that manages an ADBannerView and a content view controller.
 
  Version: 1.2
 
 Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple
 Inc. ("Apple") in consideration of your agreement to the following
 terms, and your use, installation, modification or redistribution of
 this Apple software constitutes acceptance of these terms.  If you do
 not agree with these terms, please do not use, install, modify or
 redistribute this Apple software.
 
 In consideration of your agreement to abide by the following terms, and
 subject to these terms, Apple grants you a personal, non-exclusive
 license, under Apple's copyrights in this original Apple software (the
 "Apple Software"), to use, reproduce, modify and redistribute the Apple
 Software, with or without modifications, in source and/or binary forms;
 provided that if you redistribute the Apple Software in its entirety and
 without modifications, you must retain this notice and the following
 text and disclaimers in all such redistributions of the Apple Software.
 Neither the name, trademarks, service marks or logos of Apple Inc. may
 be used to endorse or promote products derived from the Apple Software
 without specific prior written permission from Apple.  Except as
 expressly stated in this notice, no other rights or licenses, express or
 implied, are granted by Apple herein, including but not limited to any
 patent rights that may be infringed by your derivative works or by other
 works in which the Apple Software may be incorporated.
 
 The Apple Software is provided by Apple on an "AS IS" basis.  APPLE
 MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
 THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
 FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
 OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
 
 IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
 OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
 MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
 AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
 STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGE.
 
 Copyright (C) 2014 Apple Inc. All Rights Reserved.
 
 */
 
#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
 
 
#pragma mark -
 
@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];
    }
    _bannerView.delegate = self;
    
    [self.view addSubview:_bannerView];
    
    _contentController = self.childViewControllers[0];  // remember who our content child is
}
 
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return [_contentController preferredInterfaceOrientationForPresentation];
}
 
- (NSUInteger)supportedInterfaceOrientations
{
    return [_contentController supportedInterfaceOrientations];
}
 
- (void)viewDidLayoutSubviews
{
    CGRect contentFrame = self.view.bounds, bannerFrame = CGRectZero;
 
    // All we need to do is 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 = [_bannerView sizeThatFits:contentFrame.size];
    
    if (_bannerView.bannerLoaded) {
        contentFrame.size.height -= bannerFrame.size.height;
        bannerFrame.origin.y = contentFrame.size.height;
    } else {
        bannerFrame.origin.y = contentFrame.size.height;
    }
    _contentController.view.frame = contentFrame;
    _bannerView.frame = bannerFrame;
}
 
- (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 hidden.
        // 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