Objective c 为什么我的iAd横幅不显示？

通过阅读您的问题不确定，但请注意，Apple模拟的IAD不可用。有时候，在广告样本发布之前，你需要尝试多次。

有四个要点。首先，您应该在viewDidLoad方法中将横幅定位在屏幕外，因为它在您第一次启动时只会显示一个空帧，并且很可能因此而被拒绝

其次，您设置的横幅视图不正确。我认为帧仍然是零。第三，您没有设置bannerView的代理。请尝试以下操作：

- (void)viewDidLoad
{

    adView = [[ADBannerView alloc] initWithFrame:CGRectZero];
    adView.requiredContentSizeIdentifiers = [NSSet setWithObject:ADBannerContentSizeIdentifierPortrait];
    adView.currentContentSizeIdentifier = ADBannerContentSizeIdentifierPortrait;
    CGRect adFrame = adView.frame;
    adFrame.origin.y = self.view.frame.size.height-adView.frame.size.height;
    adView.frame = adFrame;
    [self.view addSubview:adView];

}


- (void)bannerViewDidLoadAd:(ADBannerView *)banner
{
    if (!self.bannerIsVisible)
    {
        self.bannerIsVisible = YES;
    }
}

- (void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error
{
    if (self.bannerIsVisible)
    {

        self.bannerIsVisible = NO;
    }

第四，在BannerViewIDLoadAD:method中，您没有将横幅广告设置为动画。试试这个：

-(void)viewDidLoad{
    CGRect frame=CGRectZero;
    frame.size = [ADBannerView sizeFromBannerContentSizeIdentifier:ADBannerContentSizeIdentifierPortrait];
    // Place frame at the bottom edge of the screen out of sight
    frame.origin = CGPointMake(0.0, CGRectGetMaxY(self.view.bounds));

    // Now to create and configure the banner view
    ADBannerView *adView = [[ADBannerView alloc] initWithFrame:frame];
    adView.requiredContentSizeIdentifiers = [NSSet setWithObject:ADBannerContentSizeIdentifierPortrait];
    // Set the delegate to self, so that we are notified of ad responses
    adView.delegate = self;
    [self.view addSubview: adView];
}

当然，如果横幅应该放在屏幕的顶部，您可能会知道需要如何修改，但这会让您朝着正确的方向前进

祝你好运

- (void)bannerViewDidLoadAd:(ADBannerView *)banner
{
    // Get a brand new frame
    CGRect newFrame=CGRectZero;
    CGPoint frameOrigin=CGPointZero;
    // Set the origin
    frameOrigin=CGPointMake(0.0, CGRectGetMaxY(self.view.bounds));
    newFrame.origin=frameOrigin;

    // Set the size
    newFrame.size=[ADBannerView sizeFromBannerContentSizeIdentifier:ADBannerContentSizeIdentifierPortrait];

    CGFloat bannerHeight = newFrame.size.height;
    CGFloat bannerOffset=0.0;

    // Determine where the new frame should be
    if (!self.bannerIsVisible)
    {   
        // It should be visible, raise it up
        bannerOffset=-bannerHeight;
    }

    CGRect offSetRect=CGRectOffset(newFrame,0.0f,bannerOffset);
        [UIView animateWithDuration:0.2
                         animations:^{banner.view.frame=offSetRect}
                         completion:^(BOOL finished){
                             if (bannerOffSet<0){
                               self.bannerIsVisible=YES;
                             }else{
                               self.bannerIsVisible=NO;
                             }
                         }
        ]; 

}