Admob奖励视频只会出现一次

Question

我需要在cocos creator打包的android程序中组装admob

当我点击“观看视频”按钮时，奖励视频播放正常。

但是如果我“关闭视频”然后尝试再次“观看视频”它不起作用。

当我调试程序时，我发现这段代码无法再次运行。

 new RewardedAdLoadCallback() {
                    @Override
                    public void onAdFailedToLoad(@NonNull LoadAdError loadAdError) {
                        // Handle the error.
                        Log.d(TAG, loadAdError.toString());
                        rewardedAd = null;
                    }

                    @Override
                    public void onAdLoaded(@NonNull RewardedAd ad) {
                        MyApplication.this.rewardedAd = ad;
                        Log.d(TAG, "Ad was loaded.");
                    }

我的loadAwardAd代码是

 public void loadAwardAd(){
        AdRequest adRequest = new AdRequest.Builder().build();
        RewardedAd.load(this, "ca-app-pub-3940256099942544/5224354917",
                adRequest,
                new RewardedAdLoadCallback() {
                    @Override
                    public void onAdFailedToLoad(@NonNull LoadAdError loadAdError) {
                        // Handle the error.
                        Log.d(TAG, loadAdError.toString());
                        rewardedAd = null;
                    }

                    @Override
                    public void onAdLoaded(@NonNull RewardedAd ad) {
                        MyApplication.this.rewardedAd = ad;
                        Log.d(TAG, "Ad was loaded.");
                    }
                });
    }

我在 onAdDismissedFullScreenContent() 中重新加载 loadAwardAd()：

@Override
            public void onAdDismissedFullScreenContent() {
                // Called when ad is dismissed.
                // Set the ad reference to null so you don't show the ad a second time.
                Log.d(TAG, "Ad dismissed fullscreen content.");
                rewardedAd = null;
                MyApplication.getInstance().loadAwardAd();
            }

我想原因是我使用了

new Myapplication().loadAwardAd()

，但我必须在showRewardedVideo()中使用静态方法。 我的 showRewardedVideo() 是

public static void showRewardedVideo(){

        if (rewardedAd == null) {
            Log.d("TAG", "The rewarded ad wasn't ready yet.");
            return;
        }

        rewardedAd.setFullScreenContentCallback(new FullScreenContentCallback() {
            @Override
            public void onAdClicked() {
                // Called when a click is recorded for an ad.
                Log.d(TAG, "Ad was clicked.");
            }

            @Override
            public void onAdDismissedFullScreenContent() {
                // Called when ad is dismissed.
                // Set the ad reference to null so you don't show the ad a second time.
                Log.d(TAG, "Ad dismissed fullscreen content.");
                rewardedAd = null;
                MyApplication.getInstance().loadAwardAd();
            }

            @Override
            public void onAdFailedToShowFullScreenContent(AdError adError) {
                // Called when ad fails to show.
                Log.e(TAG, "Ad failed to show fullscreen content.");
                rewardedAd = null;
            }

            @Override
            public void onAdImpression() {
                // Called when an impression is recorded for an ad.
                Log.d(TAG, "Ad recorded an impression.");
            }

            @Override
            public void onAdShowedFullScreenContent() {
                // Called when ad is shown.
                Log.d(TAG, "Ad showed fullscreen content.");
            }
        });


            Activity activityContext = (AppActivity)MyApplication.getInstance().mainActive;
            // Make sure to operate on the UI thread
            activityContext.runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    rewardedAd.show(activityContext, new OnUserEarnedRewardListener() {
                        @Override
                        public void onUserEarnedReward(@NonNull RewardItem rewardItem) {
                            // Handle the reward.
                            Log.d(TAG, "The user earned the reward.");
                            int rewardAmount = rewardItem.getAmount();
                            String rewardType = rewardItem.getType();
                        }
                    });
                }
            });

        }

此代码参考官方示例代码(https://github.com/googleads/googleads-mobile-android-examples/blob/main/java/admob/RewardedVideoExample/app/src/main/java/com/google /ads/rewardedvideoexample/MainActivity.java）。唯一不同的地方是我使用静态方法显示获奖广告。但是cocos creator只能使用静态方法。我不知道如何解决它。我