插頁式廣告

插頁式廣告會全螢幕顯示,覆蓋整個應用程式的介面。這類廣告通常會顯示在應用程式流程中的自然轉換點,例如操作後的空檔或遊戲關卡之間的暫停時間。當應用程式顯示插頁式廣告時,使用者可以選擇輕觸廣告前往到達網頁,或是關閉廣告返回應用程式。

本指南說明如何將插頁式廣告整合至 Flutter 應用程式。

請務必使用測試廣告進行測試

建構及測試應用程式時,請務必使用測試廣告,而非實際的正式版廣告。否則可能導致帳戶停權。

如要載入測試廣告,最簡單的方法是使用專用測試廣告單元 ID 來放送插頁式廣告:

  • /21775744923/example/interstitial

測試廣告單元會在每個請求中傳回測試廣告,您可以在編寫程式碼、測試和偵錯時,在自己的應用程式中自由使用這些廣告。請務必在發布應用程式前,將這些 ID 替換為您自己的廣告單元 ID。

載入廣告

以下範例會載入插頁式廣告:

class InterstitialExampleState extends State<InterstitialExample> {
  AdManagerInterstitialAd? _interstitialAd;

  // TODO: replace this test ad unit with your own ad unit.
  final adUnitId = '/21775744923/example/interstitial';

  /// Loads an interstitial ad.
  void loadAd() {
    AdManagerInterstitialAd.load(
        adUnitId: adUnitId,
        request: const AdManagerAdRequest(),
        adLoadCallback: AdManagerInterstitialAdLoadCallback(
          // Called when an ad is successfully received.
          onAdLoaded: (ad) {
            debugPrint('$ad loaded.');
            // Keep a reference to the ad so you can show it later.
            _interstitialAd = ad;
          },
          // Called when an ad request failed.
          onAdFailedToLoad: (LoadAdError error) {
            debugPrint('AdManagerInterstitialAd failed to load: $error');
          },
        ));
  }
}

插頁式廣告事件

您可以使用 FullScreenContentCallback 監聽生命週期事件,例如廣告顯示或關閉的時間。請先設定 AdManagerInterstitialAd.fullScreenContentCallback,再放送廣告,以便接收這些事件的通知。本範例會實作各個方法:

class InterstitialExampleState extends State<InterstitialExample> {
  AdManagerInterstitialAd? _interstitialAd;

  // TODO: replace this test ad unit with your own ad unit.
  final adUnitId = '/21775744923/example/interstitial';

  /// Loads an interstitial ad.
  void loadAd() {
    AdManagerInterstitialAd.load(
        adUnitId: adUnitId,
        request: const AdManagerAdRequest(),
        adLoadCallback: AdManagerInterstitialAdLoadCallback(
          // Called when an ad is successfully received.
          onAdLoaded: (ad) {
             ad.fullScreenContentCallback = FullScreenContentCallback(
                // Called when the ad showed the full screen content.
                onAdShowedFullScreenContent: (ad) {},
                // Called when an impression occurs on the ad.
                onAdImpression: (ad) {},
                // Called when the ad failed to show full screen content.
                onAdFailedToShowFullScreenContent: (ad, err) {
                  // Dispose the ad here to free resources.
                  ad.dispose();
                },
                // Called when the ad dismissed full screen content.
                onAdDismissedFullScreenContent: (ad) {
                  // Dispose the ad here to free resources.
                  ad.dispose();
                },
                // Called when a click is recorded for an ad.
                onAdClicked: (ad) {});

            debugPrint('$ad loaded.');
            // Keep a reference to the ad so you can show it later.
            _interstitialAd = ad;
          },
          // Called when an ad request failed.
          onAdFailedToLoad: (LoadAdError error) {
            debugPrint('AdManagerInterstitialAd failed to load: $error');
          },
        ));
  }
}

顯示插頁式廣告

AdManagerInterstitialAd 會以 Overlay 的形式顯示在所有應用程式內容上方,並以靜態方式放置,因此無法新增至 Flutter 小工具樹狀結構。您可以呼叫 show(),選擇廣告顯示時間。

_interstitiaAd.show();

呼叫 show() 後,以這種方式顯示的 Ad 無法以程式輔助方式關閉,且需要使用者輸入內容。AdManagerInterstitialAd 只能顯示一次。後續的顯示呼叫會觸發 onAdFailedToShowFullScreenContent

廣告必須在不再需要存取權時處置。呼叫 dispose() 的最佳做法是在 FullScreenContentCallback.onAdDismissedFullScreenContentFullScreenContentCallback.onAdFailedToShowFullScreenContent 回呼中。

大功告成!您的應用程式現在已可顯示插頁式廣告。

後續步驟