插页式激励广告（Beta 版）

插页式激励广告是一种激励用户的广告格式， 奖励 自动应用。与激励广告不同，用户 用户才能选择观看插页式激励广告。本指南介绍了如何 集成来自 Ad Manager 的插页式激励广告 转换为 Flutter 应用。

前提条件

  • Flutter 插件 1.1.0 或更高版本。
  • 完成入门指南。您的 Flutter 应用应已包含 Google 移动广告 Flutter 插件 。

始终使用测试广告进行测试

在构建和测试应用时，请务必使用测试广告 实际投放的广告。否则，可能会导致您的账号被暂停。

要加载测试广告，最简便的方法就是使用我们的专用测试广告单元 ID 插页式激励广告：

  • /21775744923/example/rewarded-interstitial

测试广告单元已配置为针对每个请求返回测试广告 您可以在自己应用的编码、测试和调试过程中随意使用它们。 只需确保在发布前用您自己的广告单元 ID 替换这些测试广告单元 。

加载广告

以下示例加载了一个插页式激励广告：

class RewardedInterstitialExampleState extends State<RewardedInterstitialExample> {
  RewardedInterstitialAd? _rewardeInterstitialdAd;

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

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

插页式激励广告事件

通过使用 FullScreenContentCallback，您可以监听生命周期 事件（例如，广告展示或关闭广告）。设置 RewardedInterstitialAd.fullScreenContentCallback，然后向以下用户展示广告： 接收这些事件的通知。本示例实现了每个方法 将消息记录到控制台：

class RewardedInterstitialExampleState extends State<RewardedInterstitialExample> {
  RewardedInterstitialAd? _rewardedInterstitialAd;

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

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

展示广告

RewardedInterstitialAd 以叠加层的形式显示在所有应用内容之上 并且是静态放置的因此无法将其添加到 Flutter widget 树。 您可以通过调用 show() 来选择展示广告的时间。RewardedInterstitialAd.show() 接受一个 OnUserEarnedRewardCallback， 在用户获得奖励时调用。请务必实施此功能，奖励 观看广告的用户

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

调用 show() 后，以这种方式展示的 Ad 无法以编程方式移除，并且需要用户输入内容。RewardedInterstitialAd 只能 显示一次。后续的展示调用将触发 onAdFailedToShowFullScreenContent。

如果不再需要访问某个广告，则必须予以处置。调用 dispose() 的最佳实践是，在 FullScreenContentCallback.onAdDismissedFullScreenContent 和 FullScreenContentCallback.onAdFailedToShowFullScreenContent 回调中调用。

大功告成！现在，您的应用就可以展示插页式激励广告了。