本頁面由 Cloud Translation API 翻譯而成。

獎勵廣告

使用者可選擇與獎勵廣告互動提供應用程式內獎勵本指南列出如何將 Ad Manager 獎勵廣告整合至 Flutter 應用程式。

一律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。否則帳戶可能會遭到停權。

如要載入測試廣告，最簡單的方法是使用獎勵廣告專用的測試廣告單元 ID：

/21775744923/example/rewarded

測試廣告單元會設為針對每個請求傳回測試廣告。您可以在自己的應用程式中使用這些 API，編寫程式碼、測試及偵錯。您只要先將這些內容換成自己的廣告單元編號，再發布應用程式。

載入廣告

以下範例會載入獎勵廣告：

class RewardedExampleState extends State<RewardedExample> {
  RewardedAd? _rewardedAd;

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

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

獎勵廣告事件

使用 FullScreenContentCallback 即可監聽生命週期事件，例如廣告顯示或關閉時間。組合在顯示廣告前RewardedAd.fullScreenContentCallback 接收這類事件的通知。這個範例會實作每個方法，並記錄訊息傳送至控制台：

class RewardedExampleState extends State<RewardedExample> {
  RewardedAd? _rewardedAd;

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

  /// Loads a rewarded ad.
  void loadAd() {
    RewardedAd.loadWithAdManagerAdRequest(
        adUnitId: adUnitId,
        adManagerAdRequest: const AdManagerAdRequest(),
        adLoadCallback: RewardedAdLoadCallback(
          // 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.
            _rewardedAd = ad;
          },
          // Called when an ad request failed.
          onAdFailedToLoad: (LoadAdError error) {
            debugPrint('RewardedAd failed to load: $error');
          },
        ));
  }
}

敬上

多媒體廣告

RewardedAd 會以重疊形式顯示在所有應用程式內容上方，靜態放置；因此無法新增至 Flutter 小工具樹狀結構。你可以呼叫 show() 來選擇廣告的放送時機。 RewardedAd.show() 會採用 OnUserEarnedRewardCallback，您可在使用者獲得獎勵時請務必導入這個功能，並獎勵觀看廣告。

_rewardedAd.show(onUserEarnedReward: (AdWithoutView ad, RewardItem rewardItem) {
  // Reward the user for watching an ad.
});

呼叫 show() 後，就無法移除以這種方式顯示的 Ad 需要使用者輸入內容RewardedAd 只能顯示一次。後續的顯示呼叫會觸發 onAdFailedToShowFullScreenContent。

不再需要放送的廣告時，必須予以處理。最佳做法何時該呼叫 dispose() 位於「FullScreenContentCallback.onAdDismissedFullScreenContent」和 FullScreenContentCallback.onAdFailedToShowFullScreenContent 回呼。

大功告成！您的應用程式現在可以顯示獎勵廣告了。