使用UITableViews在应用程序中使用ADBannerView的共享实例

Question

我有一个带有多个UITableViews的应用程序,我正在实现iADs.根据Apple文档(http://developer.apple.com/library/ios/#technotes/tn2286/_index.html#//apple_ref/doc/uid/DTS40011212)我创建了一个属于我的应用代表的共享横幅并且应用程序委托也是横幅的委托.这种方法效果很好,广告在加载横幅和用户切换屏幕后很好地显示在各种视图控制器上.

问题是在第一个viewController上没有看到广告,因为视图控制器的viweWillAppear方法(我称之为"fixUpAdView"方法)在加载横幅之前出现.

我想我得到的部分是这个(来自苹果文档):"让你的应用程序代理告诉当前的视图控制器它是否应该显示或隐藏横幅.你可以使用UINavigationControllerDelegate或UITabBarControllerDelegate协议推送横幅来显示它." 我知道我需要在bannerViewDidLoadAd和failToReceive方法中添加一些内容,但是对于如何执行此操作我感到有点困惑.

我不希望广告在我的所有视图控制器上显示(只有6个),并且我在应用程序中也有几个模态视图(其中任何一个都没有广告).

以下是我的一些代码:在我的appDelegate中:

- (void)bannerViewDidLoadAd:(ADBannerView *)banner {
    NSLog(@"bannerViewDidLoadAD");
    if (!_adBannerViewIsVisible) 
        _adBannerViewIsVisible = YES;

}


- (void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error
{

    NSLog(@"BannerAd didfailtoreceive");
    if (_adBannerViewIsVisible)
        _adBannerViewIsVisible = NO;

}

- (ADBannerView *)sharedAdBannerView 
{
    if (_sharedAdBannerView == nil) {

        Class classAdBannerView = NSClassFromString(@"ADBannerView");

        if (classAdBannerView != nil) {
            _sharedAdBannerView = [[classAdBannerView alloc] initWithFrame:CGRectZero];
            [_sharedAdBannerView setRequiredContentSizeIdentifiers:[NSSet setWithObjects: 
                                                              ADBannerContentSizeIdentifier320x50, 
                                                              ADBannerContentSizeIdentifier480x32, nil]];
            [_sharedAdBannerView setCurrentContentSizeIdentifier:ADBannerContentSizeIdentifier320x50];            
            [_sharedAdBannerView setFrame:CGRectOffset([_sharedAdBannerView frame], 0, 
                                                 -(iAD_BANNER_HEIGHT))];
            [_sharedAdBannerView setDelegate:self];
        }
    }

    return _sharedAdBannerView;
}

在我的视图控制器中:

- (void)viewWillAppear:(BOOL)animated {

    if ([[AppDelegate ad] shouldShowAds]) {

        if (!self.contentView) {
            self.contentView = [[UIView alloc] initWithFrame:[[self view] bounds]];
            [self.view addSubview:_contentView];
        }
        [self.contentView addSubview:topView];
        [self fixupAdView];
        [self.view addSubview:[[AppDelegate ad] sharedAdBannerView]];
    }
    [super viewWillAppear:NO];
}


#pragma mark
#pragma mark iADS

- (void)fixupAdView {

    if ([[AppDelegate ad] sharedAdBannerView] != nil) {        

        [[[AppDelegate ad] sharedAdBannerView] setCurrentContentSizeIdentifier:ADBannerContentSizeIdentifier320x50];
        [UIView beginAnimations:@"fixupViews" context:nil];

        if ([[AppDelegate ad] adBannerViewIsVisible]) {
            CGRect adBannerViewFrame = [[[AppDelegate ad] sharedAdBannerView] frame];
            adBannerViewFrame.origin.x = 0;
            adBannerViewFrame.origin.y = 0;
            [[[AppDelegate ad] sharedAdBannerView] setFrame:adBannerViewFrame];
            CGRect contentViewFrame = _contentView.frame;
            contentViewFrame.origin.y = iAD_BANNER_HEIGHT;
            contentViewFrame.size.height = self.view.frame.size.height - 
            iAD_BANNER_HEIGHT;
            _contentView.frame = contentViewFrame;
        } 
        else {
            CGRect adBannerViewFrame = [[[AppDelegate ad] sharedAdBannerView] frame];
            adBannerViewFrame.origin.x = 0;
            adBannerViewFrame.origin.y = -(iAD_BANNER_HEIGHT);
            [[[AppDelegate ad] sharedAdBannerView] setFrame:adBannerViewFrame];
            CGRect contentViewFrame = _contentView.frame;
            contentViewFrame.origin.y = 0;
            contentViewFrame.size.height = self.view.frame.size.height;
            _contentView.frame = contentViewFrame;            
        }
        [UIView commitAnimations];
    }   
}

Answer 1

使用NSNotificationCenter来解决这个问题就像一个魅力,现在我的iAds一旦加载就会出现 - 耶!如果其他人需要这个是我输入的额外代码:(在我的appDelegate.m中)

- (void)bannerViewDidLoadAd:(ADBannerView *)banner {
NSLog(@"bannerViewDidLoadAD");
if (!_adBannerViewIsVisible) {
    _adBannerViewIsVisible = YES;
    [[NSNotificationCenter defaultCenter] postNotificationName:@"adjustAdBannerView" object:nil];
}

}

- (void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error

{

 NSLog(@"BannerAd didfailtoreceive");
if (_adBannerViewIsVisible) {
    _adBannerViewIsVisible = NO;
    [[NSNotificationCenter defaultCenter] postNotificationName:@"adjustAdBannerView" object:nil];
}

}

在我的View Controller中(在viewWillAppear中):

[[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(fixupAdView)
                                                 name:@"adjustAdBannerView"
                                               object:nil];