final NativeAdView nativeAdView = findViewById(R.id.your_native_ad_view);
final MediaView mediaView = nativeAdView.findViewById(R.id.mediaView);
final TextView titleTextView = nativeAdView.findViewById(R.id.textTitle);
final ImageView iconImageView = nativeAdView.findViewById(R.id.imageIcon);
final TextView descriptionTextView = nativeAdView.findViewById(R.id.textDescription);
final DefaultCtaView ctaView = nativeAdView.findViewById(R.id.ctaView);

final NativeAdRequest nativeAdRequest = new NativeAdRequest.Builder().build();
final BuzzAdNative buzzAdNative = new BuzzAdNative("YOUR_NATIVE_UNIT_ID");

buzzAdNative.loadAd(nativeAdRequest, new BuzzAdNative.AdLoadListener() {
    @Override
    public void onAdLoaded(@NotNull NativeAd nativeAd) {
        // 할당된 광고가 있으면 호출됩니다. 
        // 광고 데이터를 바인딩합니다.
        final NativeAdViewBinder viewBinder = new NativeAdViewBinder.Builder(nativeAdView, mediaView)
            .titleTextView(titleTextView)
            .descriptionTextView(descriptionTextView)
            .iconImageView(iconImageView)
            .ctaView(ctaView)
            .build();
        viewBinder.bind(nativeAd);
    }

    @Override
    public void onLoadFailed(@NotNull AdError adError) {
        // 할당된 광고가 없으면 호출됩니다.
        Log.e(TAG, "Failed to load a native ad.", adError);
    }
});