Android 如何使用recyclerview适配器有效地按需加载本机广告？

我所做的是，我有一个recyclerView，它有它的适配器，我从适配器中加载nativeAds。但是由于在recyclerView中加载广告而不是预加载广告，我的recyclerView滚动不顺畅

我还尝试在不同的线程上加载本地广告，但这也没有帮助

你知道如何在不牺牲性能的情况下加载本地广告吗

public class GetInspiredAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {

    public static int VIEW_TYPE_ADS = 0;

    public static int VIEW_TYPE_NOTADS = 1;

    // this shows that the ad is to be added after this many items.
    public static int ADS_AFTER_HOW_MANY_ITEMS = 3;

    private boolean isNetworkAvailable = false;
    private Context context;
    private ArrayList<Object> list;
    private GetInspiredListener listener;

    public GetInspiredAdapter(Context context, ArrayList<Object> list, GetInspiredListener listener) {
        this.context = context;
        this.list = list;
        this.listener = listener;
    }

    private void addNativeToList() {
        int i = ADS_AFTER_HOW_MANY_ITEMS;
        while (i < list.size()) {
            list.add(i, new UnifiedNativeAdView(context));
            i += ADS_AFTER_HOW_MANY_ITEMS + 1;
        }
    }

    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int viewType) {

        if (viewType == VIEW_TYPE_ADS) {
            View unifiedNativeLayoutView = LayoutInflater.from(context).inflate(R.layout.ad_unified, viewGroup, false);
            unifiedNativeLayoutView.setTag(new Integer(GetInspiredAdapter.VIEW_TYPE_ADS));
            return new UnifiedNativeAdViewHolder(unifiedNativeLayoutView);
        } else {
            View itemView = LayoutInflater.from(context).inflate(R.layout.image_item, viewGroup, false);
            itemView.setTag(new Integer(GetInspiredAdapter.VIEW_TYPE_NOTADS));
            return new GetInspiredViewHolder(itemView);
        }
    }

    @Override
    public void onBindViewHolder(@NonNull final RecyclerView.ViewHolder holder, int position) {
        int viewType = getItemViewType(position);

        if (viewType == VIEW_TYPE_ADS) {

            if (!isNetworkAvailable) {
                list.remove(position);
                notifyDataSetChanged();
                return;
            }

            AdLoader.Builder builder = new AdLoader.Builder(context, Constants.INSPIRED_MOB)
                    .forUnifiedNativeAd(new UnifiedNativeAd.OnUnifiedNativeAdLoadedListener() {

                        @Override
                        public void onUnifiedNativeAdLoaded(UnifiedNativeAd unifiedNativeAd) {
                            populateNativeAdView(unifiedNativeAd, (UnifiedNativeAdViewHolder) holder);
                        }

                    }).withAdListener(new AdListener() {

                        @Override
                        public void onAdFailedToLoad(int i) {
                            super.onAdFailedToLoad(i);
                        }

                    });

            builder.build().loadAd(new AdRequest.Builder().build());

        } else if (viewType == VIEW_TYPE_NOTADS) {
            LoadImage((InspiredObject) list.get(getItemIndex(position)), (GetInspiredViewHolder) holder);
        }


    }

    private void LoadImage(InspiredObject obj, GetInspiredViewHolder viewHolder) {
        //Url link to images
        String url = "http://aim-itech.com/mandala/image/";
        String string = url + obj.low;


        Glide.with(context).load(string).override(Constants.SAMPLE_SIZE_MEDIUM).into(viewHolder.imageView);
        Log.e("TAG", string);
    }

    private void populateNativeAdView(UnifiedNativeAd nativeAd, UnifiedNativeAdViewHolder holder) {

        if (nativeAd == null) {
            holder.getAdView().setVisibility(View.INVISIBLE);
            holder.textLoading.setVisibility(View.VISIBLE);
            return;
        }

        holder.textLoading.setVisibility(View.GONE);

        UnifiedNativeAdView adView = holder.getAdView();

        adView.setVisibility(View.VISIBLE);

        ((TextView) adView.getHeadlineView()).setText(nativeAd.getHeadline());
        ((TextView) adView.getBodyView()).setText(nativeAd.getBody());
        ((Button) adView.getCallToActionView()).setText(nativeAd.getCallToAction());

        NativeAd.Image icon = nativeAd.getIcon();

        if (icon == null) {
            adView.getIconView().setVisibility(View.INVISIBLE);
        } else {
            ((ImageView) adView.getIconView()).setImageDrawable(icon.getDrawable());
            adView.getIconView().setVisibility(View.VISIBLE);
        }

        if (nativeAd.getPrice() == null) {
            adView.getPriceView().setVisibility(View.INVISIBLE);
        } else {
            adView.getPriceView().setVisibility(View.VISIBLE);
            ((TextView) adView.getPriceView()).setText(nativeAd.getPrice());
        }

        if (nativeAd.getStore() == null) {
            adView.getStoreView().setVisibility(View.INVISIBLE);
        } else {
            adView.getStoreView().setVisibility(View.VISIBLE);
            ((TextView) adView.getStoreView()).setText(nativeAd.getStore());
        }

        if (nativeAd.getStarRating() == null) {
            adView.getStarRatingView().setVisibility(View.INVISIBLE);
        } else {
            ((RatingBar) adView.getStarRatingView())
                    .setRating(nativeAd.getStarRating().floatValue());
            adView.getStarRatingView().setVisibility(View.VISIBLE);
        }

        if (nativeAd.getAdvertiser() == null) {
            adView.getAdvertiserView().setVisibility(View.INVISIBLE);
        } else {
            ((TextView) adView.getAdvertiserView()).setText(nativeAd.getAdvertiser());
            adView.getAdvertiserView().setVisibility(View.VISIBLE);
        }

        // Assign native ad object to the native view.
        adView.setNativeAd(nativeAd);
    }

    public int getItemIndex(int position) {
        return position;
    }

    @Override
    public int getItemViewType(int position) {
        Object recyclerViewItem = list.get(getItemIndex(position));

        if (recyclerViewItem instanceof UnifiedNativeAd) {
            return VIEW_TYPE_ADS;
        } else if (recyclerViewItem instanceof UnifiedNativeAdView) {
            return VIEW_TYPE_ADS;
        }

        return VIEW_TYPE_NOTADS;
    }

    public boolean isNetworkAvailable() {
        return isNetworkAvailable;
    }

    public void setNetworkAvailable(boolean networkAvailable) {
        isNetworkAvailable = networkAvailable;
        if (isNetworkAvailable) {
            addNativeToList();
        }
    }

    @Override
    public int getItemCount() {
        return list.size();
    }

    public class GetInspiredViewHolder extends RecyclerView.ViewHolder {

        ImageView imageView;

        public GetInspiredViewHolder(@NonNull View itemView) {
            super(itemView);

            imageView = itemView.findViewById(R.id.imageProf);

            imageView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    InspiredObject inspiredObject = (InspiredObject) list.get(getAdapterPosition());
                    Intent i = new Intent(context, InspiredActivity.class);
                    i.putExtra("image", inspiredObject.high);
                    listener.onClick(i);
                }
            });
        }
    }

    public class UnifiedNativeAdViewHolder extends RecyclerView.ViewHolder {

        private UnifiedNativeAdView adView;
        private TextView textLoading;
        private CardView adContainer;

        public UnifiedNativeAdView getAdView() {
            return adView;
        }

        UnifiedNativeAdViewHolder(View view) {
            super(view);
            textLoading = view.findViewById(R.id.native_loading_text);
            adView = view.findViewById(R.id.native_ad_view);
            adContainer = view.findViewById(R.id.ad_unified_conatiner);

            // The MediaView will display a video asset if one is present in the ad, and the
            // first image asset otherwise.
            adView.setMediaView((MediaView) adView.findViewById(R.id.ad_media));

            // Register the view used for each individual asset.
            adView.setHeadlineView(adView.findViewById(R.id.ad_headline));
            adView.setBodyView(adView.findViewById(R.id.ad_body));
            adView.setCallToActionView(adView.findViewById(R.id.ad_call_to_action));
            adView.setIconView(adView.findViewById(R.id.ad_icon));
            adView.setPriceView(adView.findViewById(R.id.ad_price));
            adView.setStarRatingView(adView.findViewById(R.id.ad_stars));
            adView.setStoreView(adView.findViewById(R.id.ad_store));
            adView.setAdvertiserView(adView.findViewById(R.id.ad_advertiser));
        }
    }
}

公共类GetInspiredAdapter扩展了RecyclerView.Adapter{
公共静态int视图\类型\ ADS=0；
公共静态int视图类型NOTADS=1；
//这表明广告将添加在这么多项目之后。
公共静态整数广告后多少项=3；
私有布尔值isNetworkAvailable=false；
私人语境；
私有数组列表；
私人GetInspiredListener；
公共GetInspiredAdapter（上下文上下文、ArrayList列表、GetInspiredListener侦听器）{
this.context=上下文；
this.list=列表；
this.listener=listener；
}
私有void addNativeToList（）{
int i=多少项之后的广告；
而（iadLoader.loadAds(new AdRequest.Builder().build(), NUMBER_OF_ADS_TO_LOAD(Max 5 according to docs);

builder.forUnifiedNativeAd(new UnifiedNativeAd.OnUnifiedNativeAdLoadedListener() {
                // OnUnifiedNativeAdLoadedListener implementation.
                @Override
                public void onUnifiedNativeAdLoaded(UnifiedNativeAd unifiedNativeAd) {
                    nativeAds.add(unifiedNativeAd);
                }

            });

private  List<UnifiedNativeAd> nativeAds =  new ArrayList<>();