android - 用户收到奖励后以编程方式关闭奖励广告

Question

我想rewardedAd在用户收到奖励后关闭广告。好像rewardedAds没有View之dismiss类的功能。setVisibility文档中的回调如下所示：

  var rewardedAd: RewardedAd? = null
  ....
  myButton.setOnClickListener {
  if (rewardedAd.isLoaded) {
    val adCallback = object: RewardedAdCallback() {
      ...
      override fun onUserEarnedReward(@NonNull reward: RewardItem) {
        // User earned reward and how to close the ads here?
      }
      ...
    }
    rewardedAd.show(activityContext, adCallback)
  }
}