Question

我在iOS上使用Google移动广告SDK并试图展示一些广告。我的代码：

GADBannerView* bannerView = [[GADBannerView alloc] initWithAdSize:GADAdSizeFromCGSize(CGSizeMake(300, 250))];
bannerView.adUnitID = @"hidden";
bannerView.rootViewController = self;
bannerView.delegate = self;

GADRequest* request = [GADRequest request];
request.testDevices = @[ kGADSimulatorID ];

[bannerView loadRequest:request];

如果我将bannerView添加到您在上面看到的代码之后的视图层次结构中，这样可以正常工作。但是，我不想在加载广告之前添加它，所以我想延迟它。我注意到如果bannerView不在视图层次结构中，则根本不会调用委托方法。此外，我找到this answer，这符合我观察的内容。另一方面，这是来自GADBannerViewDelegate标题的引用：

/// Tells the delegate that an ad request successfully received an ad. The delegate may want to add
/// the banner view to the view hierarchy if it hasn't been added yet.
- (void)adViewDidReceiveAd:(GADBannerView *)bannerView;

这表明即使视图不在层次结构中也应该可以接收那些委托回调，这正是我想要的。那么，任何想法我怎么能实现这个目标？

Answer 1

好的，这里的问题是我没有保留对bannerView的引用。它在返回方法后被释放，这就是没有调用委托方法的原因。

Answer 2

从 Admob SDK 7.56 升级到 8.2 后，我遇到了同样的问题：

他们更改了 GADBannerViewDelegate 协议的方法名称。
例如。而不是

-(void)adViewDidReceiveAd:(GADBannerView *)adView;

现在是

-(void)bannerViewDidReceiveAd:(GADBannerView *)bannerView;

另请参阅 Admob SDK 版本 8 的迁移指南：
https://developers.google.com/admob/ios/migration#methods_removedreplaced

Answer 3

您应该将GADBannerView添加到视图中，并将其隐藏属性设置为YES。另外，我建议使用AdMob提供的AdSize常量kGADAdSizeBanner。此处列出了其他AdSize Constants。

例如：

bannerView = [[GADBannerView alloc] initWithAdSize:kGADAdSizeBanner];
bannerView.adUnitID = @"YourAdUnitID";
bannerView.rootViewController = self;
bannerView.delegate = self;
[bannerView loadRequest:[GADRequest request]];
bannerView.hidden = YES; // Hide banner initially
[self.view addSubview:bannerView];
// This will put the banner at the bottom of the screen and stretch to fit the screens width
[bannerView setFrame:CGRectMake(0, self.view.frame.size.height - bannerView.frame.size.height, self.view.frame.size.width, bannerView.frame.size.height)];

然后，当您收到广告时，您取消隐藏横幅广告。例如：

-(void)adViewDidReceiveAd:(GADBannerView *)adView {
    // We've received an ad so lets show the banner
    bannerView.hidden = NO;
    NSLog(@"adViewDidReceiveAd");
}

-(void)adView:(GADBannerView *)adView didFailToReceiveAdWithError:(GADRequestError *)error {
    // Failed to receive an ad from AdMob so lets hide the banner
    bannerView.hidden = YES;
    NSLog(@"adView:didFailToReceiveAdWithError: %@", [error localizedDescription]);
}

如果您愿意，也可以通过将横幅广告的alpha属性设置为0.0而不是使用hidden来为此设置动画。属性。然后，在收到广告时为alpha设置动画。例如：

-(void)adViewDidReceiveAd:(GADBannerView *)adView {
    // We've received an ad so lets fade in the banner
    [UIView animateWithDuration:0.2 animations:^{
        bannerView.alpha = 1.0;
    }];
    NSLog(@"adViewDidReceiveAd");
}

-(void)adView:(GADBannerView *)adView didFailToReceiveAdWithError:(GADRequestError *)error {
    // Failed to receive an ad from AdMob so lets fade out the banner
    [UIView animateWithDuration:0.2 animations:^{
        bannerView.alpha = 0.0;
    }];
    NSLog(@"adView:didFailToReceiveAdWithError: %@", [error localizedDescription]);
}

此外，作为旁注，当没有要显示的广告时，GADBannerView是透明的。因此，将其添加到您的视图中并且不执行任何其他操作也会起作用。

如果视图不在视图层次结构中，则不会调用GADBannerView委托方法

3 个答案: