admob - 如何将我的奖励视频广告点显示给 mainactivity

Question

那是我的代码，我不知道这有什么问题，请帮助解决此代码

private void showRewardedAd() {
    if (mRewardedAd != null) {

        mRewardedAd.show(this, new OnUserEarnedRewardListener() {
            @Override
            public void onUserEarnedReward(@NonNull RewardItem rewardItem) {
                // Handle the reward.
                Toast.makeText(MainActivity.this, "You earned reward", Toast.LENGTH_SHORT).show();
                Log.d(TAG, "The user earned the reward.");
                int rewardAmount = rewardItem.getAmount();
                pointCount = pointCount+rewardAmount;
                rewardedTextview.setText(pointCount);

            }
        });
    } else {
        Log.d(TAG, "The rewarded ad wasn't ready yet.");
    }
}

标签： admob