我正在尝试在“回收者”视图中显示广告。
广告本身显示正确，但当我点击它时，什么也没有发生。
显示广告的代码：

class AdViewHolder(val binding: NativeAdViewBinding): RecyclerView.ViewHolder(binding.root) {
        fun bind() {
            val adLoader = AdLoader.Builder(binding.root.context, "ca-app-pub-3940256099942544/2247696110")
                .forNativeAd { ad : NativeAd ->
                    with(binding) {
                        imageView.setImageDrawable(ad.icon?.drawable)
                        titleTextView.text = ad.headline
                        ratingBar.rating = ad.starRating?.toFloat() ?: 0f
                        storeTextView.text = ad.store
                        actionButton.text = ad.callToAction
                        root.setNativeAd(ad)
                        root.visibility = View.VISIBLE
                    }
                }
                .withAdListener(object : AdListener() {
                    override fun onAdFailedToLoad(adError: LoadAdError) {
                        Napier.d("Ad Error: $adError")
                    }
                })
                .build()
            adLoader.loadAd(AdRequest.Builder().build())
        }
    }

我的xml文件native_ad_view.xml：

<?xml version="1.0" encoding="utf-8"?>
<com.google.android.gms.ads.nativead.NativeAdView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_height="wrap_content"
    android:layout_width="match_parent"
    android:visibility="gone">
    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/route_item_background"
        android:clickable="true"
        android:foreground="?android:attr/selectableItemBackground">
        ...
    </androidx.constraintlayout.widget.ConstraintLayout>
</com.google.android.gms.ads.nativead.NativeAdView>

我尝试添加方法：

actionButton.setOnClickListener {
    ad.performClick(Bundle())
}

但什么都没变