展示系统定义的原生广告格式
加载原生广告后，您的应用会通过
GADAdLoaderDelegate 协议消息。然后，您的应用将负责
展示广告（但不一定要立即执行此操作）。
为了更轻松地展示系统定义的广告格式，SDK 提供了一些实用功能，
资源。
GADNativeAdView
对于GADNativeAd，有相应的“广告视图”
类：
GADNativeAdView。
此广告视图类是 UIView，供发布商用来展示广告。
例如，单个 GADNativeAdView 可以显示
一个 GADNativeAd。用于展示该广告内容的每个 UIView 对象
资源应该是该 GADNativeAdView 对象的子视图。
例如，如果您在 UITableView 中展示广告，
其中一个单元格的视图层次结构可能如下所示：
GADNativeAdView 类还提供了 IBOutlets 用于注册
每个资产使用的视图，以及一个用于注册
GADNativeAd
对象本身。以这种方式注册视图可让 SDK 自动
处理以下任务：
- 记录点击。
- 记录展示次数（当第一个像素出现在屏幕上时）。
- 显示“广告选择”叠加层。
“广告选择”叠加层
对于间接销售的原生广告（通过 Ad Manager投放） 投放补余广告，或者通过 Ad Exchange 或 AdSense 投放）广告， 。 请根据您的首选语言留下空白 角 自动插入“广告选择”徽标的原生广告视图。此外， 确保将“广告选择”叠加层放置在允许显示图标的内容上 。 有关叠加层外观和功能的详情，请参见 程序化原生广告植入指南。
程序化原生广告的广告标示
在展示程序化原生广告时，您必须展示广告标示 指明该视图是一个通告。 如需了解政策指南，请参阅此页面。
代码示例
让我们来看看如何使用动态加载的视图展示原生广告
。在使用 GADAdLoaders 时，这可能是一种非常有用的方法
配置为请求多种格式
布置 UIView
第一步是布置展示原生广告素材资源的 UIViews。
您可以在 Interface Builder 中执行此操作，就像创建其他任何
xib 文件中。下面介绍了
广告的呈现效果：
请注意图片右上角的自定义类值。它设置为
GADNativeAdView。
这是用于显示 GADNativeAd 的广告视图类。
您还需要为 GADMediaView 设置自定义类，
来展示广告的视频或图片。
将输出口与视图相关联
创建好视图，并将正确的广告视图类分配给
在布局中，将广告视图的素材资源输出口与您创建的 UIViews 相关联。
以下是将广告视图的素材资源输出口与创建的 UIViews 相关联的方法
：
在插座面板中，GADNativeAdView 中的插座已关联至
Interface Builder 中列出的 UIViews。这样，
SDK 知道哪个 UIView 显示了哪个素材资源。
另外还需要注意的是，这些输出口代表
可以点击广告。
展示广告
在完成布局并且关联插座后，添加以下代码 在加载后展示广告的应用：
Swift
// Mark: - GADNativeAdLoaderDelegate
func adLoader(_ adLoader: GADAdLoader, didReceive nativeAd: GADNativeAd) {
print("Received native ad: \(nativeAd)")
refreshAdButton.isEnabled = true
// Create and place ad in view hierarchy.
let nibView = Bundle.main.loadNibNamed("NativeAdView", owner: nil, options: nil)?.first
guard let nativeAdView = nibView as? GADNativeAdView else {
return
}
setAdView(nativeAdView)
// Set ourselves as the native ad delegate to be notified of native ad events.
nativeAd.delegate = self
// Populate the native ad view with the native ad assets.
// The headline and mediaContent are guaranteed to be present in every native ad.
(nativeAdView.headlineView as? UILabel)?.text = nativeAd.headline
nativeAdView.mediaView?.mediaContent = nativeAd.mediaContent
// This app uses a fixed width for the GADMediaView and changes its height to match the aspect
// ratio of the media it displays.
if let mediaView = nativeAdView.mediaView, nativeAd.mediaContent.aspectRatio > 0 {
let heightConstraint = NSLayoutConstraint(
item: mediaView,
attribute: .height,
relatedBy: .equal,
toItem: mediaView,
attribute: .width,
multiplier: CGFloat(1 / nativeAd.mediaContent.aspectRatio),
constant: 0)
heightConstraint.isActive = true
}
// These assets are not guaranteed to be present. Check that they are before
// showing or hiding them.
(nativeAdView.bodyView as? UILabel)?.text = nativeAd.body
nativeAdView.bodyView?.isHidden = nativeAd.body == nil
(nativeAdView.callToActionView as? UIButton)?.setTitle(nativeAd.callToAction, for: .normal)
nativeAdView.callToActionView?.isHidden = nativeAd.callToAction == nil
(nativeAdView.iconView as? UIImageView)?.image = nativeAd.icon?.image
nativeAdView.iconView?.isHidden = nativeAd.icon == nil
(nativeAdView.starRatingView as? UIImageView)?.image = imageOfStars(
fromStarRating: nativeAd.starRating)
nativeAdView.starRatingView?.isHidden = nativeAd.starRating == nil
(nativeAdView.storeView as? UILabel)?.text = nativeAd.store
nativeAdView.storeView?.isHidden = nativeAd.store == nil
(nativeAdView.priceView as? UILabel)?.text = nativeAd.price
nativeAdView.priceView?.isHidden = nativeAd.price == nil
(nativeAdView.advertiserView as? UILabel)?.text = nativeAd.advertiser
nativeAdView.advertiserView?.isHidden = nativeAd.advertiser == nil
// For the SDK to process touch events properly, user interaction should be disabled.
nativeAdView.callToActionView?.isUserInteractionEnabled = false
// Associate the native ad view with the native ad object. This is
// required to make the ad clickable.
// Note: this should always be done after populating the ad views.
nativeAdView.nativeAd = nativeAd
}
SwiftUI
创建视图模型
创建一个视图模型，用于加载原生广告并发布原生广告数据 更改：
import GoogleMobileAds
class NativeAdViewModel: NSObject, ObservableObject, GADNativeAdLoaderDelegate {
@Published var nativeAd: GADNativeAd?
private var adLoader: GADAdLoader!
func refreshAd() {
adLoader = GADAdLoader(
adUnitID: "ca-app-pub-3940256099942544/3986624511",
// The UIViewController parameter is optional.
rootViewController: nil,
adTypes: [.native], options: nil)
adLoader.delegate = self
adLoader.load(GADRequest())
}
func adLoader(_ adLoader: GADAdLoader, didReceive nativeAd: GADNativeAd) {
// Native ad data changes are published to its subscribers.
self.nativeAd = nativeAd
nativeAd.delegate = self
}
func adLoader(_ adLoader: GADAdLoader, didFailToReceiveAdWithError error: Error) {
print("\(adLoader) failed with error: \(error.localizedDescription)")
}
}
创建 UIViewRepresentable
创建
UIViewRepresentable
GADNativeView，并订阅ViewModel
类：
private struct NativeAdView: UIViewRepresentable {
typealias UIViewType = GADNativeAdView
// Observer to update the UIView when the native ad value changes.
@ObservedObject var nativeViewModel: NativeAdViewModel
func makeUIView(context: Context) -> GADNativeAdView {
return
Bundle.main.loadNibNamed(
"NativeAdView",
owner: nil,
options: nil)?.first as! GADNativeAdView
}
func updateUIView(_ nativeAdView: GADNativeAdView, context: Context) {
guard let nativeAd = nativeViewModel.nativeAd else { return }
// Each UI property is configurable using your native ad.
(nativeAdView.headlineView as? UILabel)?.text = nativeAd.headline
nativeAdView.mediaView?.mediaContent = nativeAd.mediaContent
(nativeAdView.bodyView as? UILabel)?.text = nativeAd.body
(nativeAdView.iconView as? UIImageView)?.image = nativeAd.icon?.image
(nativeAdView.starRatingView as? UIImageView)?.image = imageOfStars(from: nativeAd.starRating)
(nativeAdView.storeView as? UILabel)?.text = nativeAd.store
(nativeAdView.priceView as? UILabel)?.text = nativeAd.price
(nativeAdView.advertiserView as? UILabel)?.text = nativeAd.advertiser
(nativeAdView.callToActionView as? UIButton)?.setTitle(nativeAd.callToAction, for: .normal)
// For the SDK to process touch events properly, user interaction should be disabled.
nativeAdView.callToActionView?.isUserInteractionEnabled = false
// Associate the native ad view with the native ad object. This is required to make the ad
// clickable.
// Note: this should always be done after populating the ad views.
nativeAdView.nativeAd = nativeAd
}
将视图添加到视图层次结构中
以下代码演示了如何将 UIViewRepresentable 添加到视图中
层次结构：
struct NativeContentView: View {
// Single source of truth for the native ad data.
@StateObject private var nativeViewModel = NativeAdViewModel()
var body: some View {
ScrollView {
VStack(spacing: 20) {
NativeAdView(nativeViewModel: nativeViewModel) // Updates when the native ad data changes.
.frame(minHeight: 300) // minHeight determined from xib.
Objective-C
#pragma mark GADNativeAdLoaderDelegate implementation
- (void)adLoader:(GADAdLoader *)adLoader didReceiveNativeAd:(GADNativeAd *)nativeAd {
NSLog(@"Received native ad: %@", nativeAd);
self.refreshButton.enabled = YES;
// Create and place ad in view hierarchy.
GADNativeAdView *nativeAdView =
[[NSBundle mainBundle] loadNibNamed:@"NativeAdView" owner:nil options:nil].firstObject;
[self setAdView:nativeAdView];
// Set the mediaContent on the GADMediaView to populate it with available
// video/image asset.
nativeAdView.mediaView.mediaContent = nativeAd.mediaContent;
// Populate the native ad view with the native ad assets.
// The headline is guaranteed to be present in every native ad.
((UILabel *)nativeAdView.headlineView).text = nativeAd.headline;
// These assets are not guaranteed to be present. Check that they are before
// showing or hiding them.
((UILabel *)nativeAdView.bodyView).text = nativeAd.body;
nativeAdView.bodyView.hidden = nativeAd.body ? NO : YES;
[((UIButton *)nativeAdView.callToActionView)setTitle:nativeAd.callToAction
forState:UIControlStateNormal];
nativeAdView.callToActionView.hidden = nativeAd.callToAction ? NO : YES;
((UIImageView *)nativeAdView.iconView).image = nativeAd.icon.image;
nativeAdView.iconView.hidden = nativeAd.icon ? NO : YES;
((UIImageView *)nativeAdView.starRatingView).image = [self imageForStars:nativeAd.starRating];
nativeAdView.starRatingView.hidden = nativeAd.starRating ? NO : YES;
((UILabel *)nativeAdView.storeView).text = nativeAd.store;
nativeAdView.storeView.hidden = nativeAd.store ? NO : YES;
((UILabel *)nativeAdView.priceView).text = nativeAd.price;
nativeAdView.priceView.hidden = nativeAd.price ? NO : YES;
((UILabel *)nativeAdView.advertiserView).text = nativeAd.advertiser;
nativeAdView.advertiserView.hidden = nativeAd.advertiser ? NO : YES;
// In order for the SDK to process touch events properly, user interaction
// should be disabled.
nativeAdView.callToActionView.userInteractionEnabled = NO;
// Associate the native ad view with the native ad object. This is
// required to make the ad clickable.
nativeAdView.nativeAd = nativeAd;
}
GitHub 上的完整示例
查看在 Swift、SwiftUI 和 访问相应的 GitHub 链接，获取 Objective-C。
Swift 自定义呈现示例 SwiftUI 原生广告示例 Objective-C 自定义渲染示例
GADMediaView
图片和视频素材资源通过
GADMediaView。
这是一个可在 xib 文件中定义或动态构建的 UIView。
它应放在 GADNativeAdView 的视图层次结构中，如同
任何其他素材资源视图
与所有素材资源视图一样，媒体视图也需要有内容
填充。您可以使用
mediaContent
属性位于 GADMediaView 上。通过
mediaContent 属性
GADNativeAd
包含可传递到
GADMediaView。
以下是来自
自定义呈现示例
(Swift
|Objective-C）
显示如何使用 GADMediaView
GADNativeAd的 GADMediaContent：
Swift
nativeAdView.mediaView?.mediaContent = nativeAd.mediaContent
Objective-C
nativeAdView.mediaView.mediaContent = nativeAd.mediaContent;
在原生广告视图的 Interface Builder 文件中，
视图自定义类设置为 GADMediaView，且您已将其连接到
mediaView插座。
更改图片内容模式
GADMediaView 类遵循 UIView
contentMode
属性。如果您想要更改图片的缩放方式
GADMediaView，请设置相应的
UIViewContentMode
来实现此目的。contentModeGADMediaView
例如，要在图片显示时填充 GADMediaView（广告中没有
视频）：
Swift
nativeAdView.mediaView?.contentMode = .aspectFill
Objective-C
nativeAdView.mediaView.contentMode = UIViewContentModeAspectFill;
GADMediaContent
GADMediaContent
类包含与原生广告的媒体内容相关的数据，媒体内容是
使用 GADMediaView 类显示。在 GADMediaView 上设置时
mediaContent 属性：
如果有视频素材资源可用，则系统会对其进行缓冲，并开始在
GADMediaView。您可以通过查看hasVideoContent。如果广告不包含视频素材资源，则会下载
mainImage素材资源 并改为放置在GADMediaView内。
后续步骤
详细了解用户隐私。