libgdx自从RewardedVideoAdListener被弃用以来，如何实现admob奖励视频

implementation 'com.google.android.gms:play-services-ads:20.4.0'

MobileAds.initialize(this, "YOUR_ADMOB_APP_ID");

RewardedAd rewardedAd = new RewardedAd(this, "YOUR_REWARDED_VIDEO_AD_UNIT_ID");
rewardedAd.loadAd(new AdRequest.Builder().build(), new RewardedAdLoadCallback() {
    @Override
    public void onAdLoaded() {
        // 广告加载成功
    }

    @Override
    public void onAdFailedToLoad(LoadAdError loadAdError) {
        // 广告加载失败
    }
});

button.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        if (rewardedAd.isLoaded()) {
            rewardedAd.show(MainActivity.this, new RewardedAdCallback() {
                @Override
                public void onUserEarnedReward(@NonNull RewardItem rewardItem) {
                    // 用户获得奖励
                }

                @Override
                public void onRewardedAdClosed() {
                    // 广告关闭
                }

                @Override
                public void onRewardedAdFailedToShow(AdError adError) {
                    // 广告展示失败
                }
            });
        }
    }
});