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原生進階

選取平台： Android iOS

顯示系統定義的原生廣告格式

載入原生廣告時，應用程式會透過其中一個 GADAdLoaderDelegate 通訊協定訊息，接收原生廣告物件，然後由應用程式負責顯示廣告 (但不必立即顯示)。SDK 提供了一些實用資源，以利顯示系統定義的廣告格式。

GADNativeAdView

與 GADNativeAd 對應的「廣告檢視區塊」類別如下： GADNativeAdView。此類別是 UIView，發布商應使用這類物件顯示廣告。舉例來說，單一 GADNativeAdView 可顯示 GADNativeAd 的單一例項。用於顯示該廣告素材資源的每個 UIView 物件，都是該 GADNativeAdView 物件的子檢視區塊。

假設您在 UITableView 中顯示廣告，其中一個儲存格的檢視區塊階層可能如下所示：

GADNativeAdView 類別也提供 IBOutlets，用於註冊所有個別素材資源的檢視區塊，以及註冊 GADNativeAd 物件本身的方法。以這種方式註冊檢視區塊，可讓 SDK 自動處理下列工作：

記錄點擊。
記錄曝光 (畫面顯示第一個像素時)。
顯示 AdChoices 重疊廣告。

AdChoices 重疊廣告

對於間接原生廣告 (透過 AdMob 候補廣告或 Ad Exchange/AdSense 放送)，SDK 會加入 AdChoices 重疊廣告。請在原生廣告檢視區塊的偏好角落預留空間，供系統自動插入 AdChoices 標誌。此外，請確認將 AdChoices 重疊廣告放在適當內容上，使標誌清楚易見。請參閱程式輔助原生廣告導入指南，進一步瞭解重疊廣告的外觀和功能。

廣告標示

顯示程式輔助原生廣告時，您必須顯示廣告標示，表明該檢視區塊是廣告。

程式碼範例

接下來，我們將說明如何使用從 xib 檔案動態載入的檢視區塊，顯示原生廣告。使用設定為請求多種格式的 GADAdLoaders 時，這種做法就非常實用。

配置 UIView

首先，請配置 UIViews，顯示原生廣告素材資源。您可以在 Interface Builder 執行這項操作，與建立其他 xib 檔案時相同。原生廣告的版面配置可能如下：

請注意圖片右上方的「Custom Class」值，已設為

GADNativeAdView。這是用於顯示 GADNativeAd 的廣告檢視區塊類別。

您也需要為 GADMediaView 設定自訂類別，用於顯示廣告的影片或圖片。

將通路連結至檢視區塊

設定完檢視區塊，並為版面配置指派正確的廣告檢視區塊類別後，請將廣告檢視區塊的素材資源通路連結至您建立的 UIViews。以下說明如何將廣告檢視區塊的素材資源通路，連結至為廣告建立的 UIViews：

在通路面板中，GADNativeAdView 的通路已連結至 Interface Builder 中配置的 UIViews。這可讓 SDK 瞭解哪個 UIView 會顯示哪個素材資源。另請務必注意，這些通路代表廣告中可點擊的檢視區塊。

顯示廣告

完成版面配置並連結通路後，請在應用程式中加入下列程式碼，在廣告載入完畢後顯示：

Swift

// Mark: - NativeAdLoaderDelegate
func adLoader(_ adLoader: AdLoader, didReceive nativeAd: NativeAd) {
  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? NativeAdView 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 MediaView 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

建立檢視區塊模型

建立檢視區塊模型，用於載入原生廣告，並發布原生廣告資料變更：

import GoogleMobileAds

class NativeAdViewModel: NSObject, ObservableObject, NativeAdLoaderDelegate {
  @Published var nativeAd: NativeAd?
  private var adLoader: AdLoader!

  func refreshAd() {
    adLoader = AdLoader(
      adUnitID: "ca-app-pub-3940256099942544/3986624511",
      // The UIViewController parameter is optional.
      rootViewController: nil,
      adTypes: [.native], options: nil)
    adLoader.delegate = self
    adLoader.load(Request())
  }

  func adLoader(_ adLoader: AdLoader, didReceive nativeAd: NativeAd) {
    // Native ad data changes are published to its subscribers.
    self.nativeAd = nativeAd
    nativeAd.delegate = self
  }

  func adLoader(_ adLoader: AdLoader, didFailToReceiveAdWithError error: Error) {
    print("\(adLoader) failed with error: \(error.localizedDescription)")
  }
}NativeAdViewModel.swift

建立 UIViewRepresentable

為 NativeView 建立 UIViewRepresentable，並訂閱 ViewModel 類別中的資料變更：

private struct NativeAdViewContainer: UIViewRepresentable {
  typealias UIViewType = NativeAdView

  // Observer to update the UIView when the native ad value changes.
  @ObservedObject var nativeViewModel: NativeAdViewModel

  func makeUIView(context: Context) -> NativeAdView {
    return
      Bundle.main.loadNibNamed(
        "NativeAdView",
        owner: nil,
        options: nil)?.first as! NativeAdView
  }

  func updateUIView(_ nativeAdView: NativeAdView, 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
  }NativeContentView.swift

將檢視區塊新增至檢視區塊階層

下列程式碼示範如何將 UIViewRepresentable 新增至檢視區塊階層：

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) {
        // Updates when the native ad data changes.
        NativeAdViewContainer(nativeViewModel: nativeViewModel)
          .frame(minHeight: 300)  // minHeight determined from xib.NativeContentView.swift

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 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 上的完整範例

請點按對應的 GitHub 連結，查看分別以 Swift、SwiftUI 和 Objective-C 整合原生廣告的完整範例。

Swift 原生進階範例 SwiftUI 原生廣告範例 Objective-C 原生進階範例

GADMediaView

系統會透過 GADMediaView 向使用者顯示圖片和影片素材資源。這是 UIView，可以在 xib 檔案中定義或動態建構，而且與任何其他素材資源檢視區塊一樣，應加入 GADNativeAdView 的檢視區塊階層。

與所有素材資源檢視區塊相同，媒體檢視區塊也需要填入內容。請透過 GADMediaView 的 mediaContent 屬性設定。GADNativeAd 的 mediaContent 屬性，包含可傳遞至 GADMediaView 的媒體內容。

以下是原生進階範例 (Swift | Objective-C) 的程式碼片段，展示如何使用 GADNativeAd 中的 GADMediaContent，將原生廣告素材資源填入 GADMediaView：

Swift

nativeAdView.mediaView?.mediaContent = nativeAd.mediaContent

Objective-C

nativeAdView.mediaView.mediaContent = nativeAd.mediaContent;

請查看原生廣告檢視區塊的介面建構工具檔案，確認檢視區塊的自訂類別已設為 GADMediaView，且已連結至 mediaView 通路。

變更圖片內容模式

顯示圖片時，GADMediaView 類別會遵守 UIView contentMode 屬性。如要變更圖片在 GADMediaView 中的縮放方式，請在 GADMediaView 的 contentMode 屬性上，設定對應的 UIViewContentMode。

舉例來說，要在顯示圖片時填滿 GADMediaView (廣告沒有影片)：

Swift

nativeAdView.mediaView?.contentMode = .aspectFill

Objective-C

nativeAdView.mediaView.contentMode = UIViewContentModeAspectFill;

GADMediaContent

GADMediaContent 類別會保留與原生廣告媒體內容相關的資料，並使用 GADMediaView 類別顯示。在 GADMediaView mediaContent 屬性上設定時：

系統會緩衝處理影片素材資源 (如有)，並在 GADMediaView 中播放。可以檢查 hasVideoContent，判斷是否有影片素材資源。
如果廣告不含影片素材資源，系統會下載 mainImage 素材資源，並加到 GADMediaView 中。

後續步驟

進一步瞭解使用者隱私。

原生進階 透過集合功能整理內容 你可以依據偏好儲存及分類內容。

顯示系統定義的原生廣告格式

GADNativeAdView

AdChoices 重疊廣告

廣告標示

程式碼範例

配置 UIView

將通路連結至檢視區塊

顯示廣告

Swift

SwiftUI

建立檢視區塊模型

建立 UIViewRepresentable

將檢視區塊新增至檢視區塊階層

Objective-C

GitHub 上的完整範例

GADMediaView

Swift

Objective-C

變更圖片內容模式

Swift

Objective-C

GADMediaContent

後續步驟

原生進階