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 AdMob 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:
Android
ca-app-pub-3940256099942544/5354046379
iOS
ca-app-pub-3940256099942544/6978759866
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 = Platform.isAndroid ? 'ca-app-pub-3940256099942544/5354046379' : 'ca-app-pub-3940256099942544/6978759866'; /// Loads a rewarded ad. void loadAd() { RewardedInterstitialAd.load( adUnitId: adUnitId, adRequest: const AdRequest(), 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: $error'); }, )); } }
插页式激励广告事件
通过使用 FullScreenContentCallback
,您可以监听生命周期
事件(例如,广告展示或关闭广告)。设置
RewardedInterstitialAd.fullScreenContentCallback
,然后向以下用户展示广告:
接收这些事件的通知。本示例实现了每个方法
将消息记录到控制台:
class RewardedInterstitialExampleState extends State<RewardedInterstitialExample> { RewardedInterstitialAd? _rewardedInterstitialAd; // TODO: replace this test ad unit with your own ad unit. final adUnitId = Platform.isAndroid ? 'ca-app-pub-3940256099942544/5354046379' : 'ca-app-pub-3940256099942544/6978759866'; /// Loads a rewarded ad. void loadAd() { RewardedInterstitialAd.load( adUnitId: adUnitId, adRequest: const AdRequest(), adLoadCallback: RewardedInterstitialAdLoadCallback( // Called when an ad is successfully received. onAdLoaded: (ad) { ad.fullScreenContentCallback = FullScreenContentCallback( // Called when the ad showed the full screen content. onAdShowedFullScreenContent: (ad) {}, // Called when an impression occurs on the ad. onAdImpression: (ad) {}, // Called when the ad failed to show full screen content. onAdFailedToShowFullScreenContent: (ad, err) { // Dispose the ad here to free resources. ad.dispose(); }, // Called when the ad dismissed full screen content. onAdDismissedFullScreenContent: (ad) { // Dispose the ad here to free resources. ad.dispose(); }, // Called when a click is recorded for an ad. onAdClicked: (ad) {}); debugPrint('$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
便无法移除
并且需要用户输入RewardedInterstitialAd
只能
显示一次。随后会触发要展示的广告调用
onAdFailedToShowFullScreenContent
。
如果不再需要访问某个广告,则必须予以处置。最佳实践
调用 dispose()
的时间位于
FullScreenContentCallback.onAdDismissedFullScreenContent
和
FullScreenContentCallback.onAdFailedToShowFullScreenContent
回调。
大功告成!现在,您的应用就可以展示插页式激励广告了。