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SplitNavigationBanner/SplitNavigationBanner/BannerViewController.m
/* |
Copyright (C) 2013-2015 Apple Inc. All Rights Reserved. |
See LICENSE.txt for this sample’s licensing information |
Abstract: |
A container view controller that manages an ADBannerView and a content view controller |
*/ |
#import "BannerViewController.h" |
NSString * const BannerViewActionWillBegin = @"BannerViewActionWillBegin"; |
NSString * const BannerViewActionDidFinish = @"BannerViewActionDidFinish"; |
@interface BannerViewController () <ADBannerViewDelegate> |
@end |
@implementation BannerViewController { |
ADBannerView *_bannerView; |
UIViewController *_contentController; |
} |
- (instancetype)initWithContentViewController:(UIViewController *)contentController |
{ |
// If contentController is nil, -loadView is going to throw an exception when it attempts to setup |
// containment of a nil view controller. Instead, throw the exception here and make it obvious |
// what is wrong. |
NSAssert(contentController != nil, @"Attempting to initialize a BannerViewController with a nil contentController."); |
self = [super init]; |
if (self != nil) { |
// 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]; |
} |
_contentController = contentController; |
_bannerView.delegate = self; |
} |
return self; |
} |
- (void)loadView |
{ |
UIView *contentView = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; |
[contentView addSubview:_bannerView]; |
// Setup containment of the _contentController. |
[self addChildViewController:_contentController]; |
[contentView addSubview:_contentController.view]; |
[_contentController didMoveToParentViewController:self]; |
self.view = contentView; |
} |
#if __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_6_0 |
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation |
{ |
return [_contentController shouldAutorotateToInterfaceOrientation:interfaceOrientation]; |
} |
#endif |
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation |
{ |
return [_contentController preferredInterfaceOrientationForPresentation]; |
} |
- (NSUInteger)supportedInterfaceOrientations |
{ |
return [_contentController supportedInterfaceOrientations]; |
} |
- (void)viewDidLayoutSubviews |
{ |
// This method will be called whenever we receive a delegate callback |
// from the banner view. |
// (See the comments in -bannerViewDidLoadAd: and -bannerView:didFailToReceiveAdWithError:) |
CGRect contentFrame = self.view.bounds, bannerFrame = CGRectZero; |
#if __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_6_0 |
// If configured to support iOS <6.0, then we need to set the currentContentSizeIdentifier in order to resize the banner properly. |
// This continues to work on iOS 6.0, so we won't need to do anything further to resize the banner. |
if (contentFrame.size.width < contentFrame.size.height) { |
_bannerView.currentContentSizeIdentifier = ADBannerContentSizeIdentifierPortrait; |
} else { |
_bannerView.currentContentSizeIdentifier = ADBannerContentSizeIdentifierLandscape; |
} |
bannerFrame = _bannerView.frame; |
#else |
// If configured to support iOS >= 6.0 only, then we want to avoid currentContentSizeIdentifier as it is deprecated. |
// Fortunately 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]; |
#endif |
// Check if the banner has an ad loaded and ready for display. Move the banner off |
// screen if it does not have an ad. |
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 such that it is either visible |
// or hidden depending upon whether its bannerLoaded property is YES or NO (It will be |
// YES if -bannerViewDidLoadAd: was last called). We just need our view |
// to (re)lay itself out so -viewDidLayoutSubviews will be called. |
// 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 |
{ |
[UIView animateWithDuration:0.25 animations:^{ |
// -viewDidLayoutSubviews will handle positioning the banner such that it is either visible |
// or hidden depending upon whether its bannerLoaded property is YES or NO (It will be |
// NO if -bannerView:didFailToReceiveAdWithError: was last called). We just need our view |
// to (re)lay itself out so -viewDidLayoutSubviews will be called. |
// 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 |
Copyright © 2013 Apple Inc. All Rights Reserved. Terms of Use | Privacy Policy | Updated: 2013-05-28