SampleAdMobNativeAd.java

@Override
protected void prepare(@NonNull final NativeAppInstallAdView adView, @NonNull final NativeAppInstallAd nativeAd) {
    final TextView  adTitle        = (TextView)adView.findViewById(R.id.ad_title);
    final TextView  adBody         = (TextView)adView.findViewById(R.id.ad_body);
    final ImageView adImage        = (ImageView)adView.findViewById(R.id.ad_image);
    final TextView  adCallToAction = (TextView)adView.findViewById(R.id.ad_call_to_action);

    adView.setHeadlineView(adTitle);
    adView.setBodyView(adBody);
    adView.setImageView(adImage);
    adView.setCallToActionView(adCallToAction);
}

@Override
protected void prepare(@NonNull final NativeContentAdView adView, @NonNull final NativeContentAd nativeAd) {
    final TextView  adTitle        = (TextView)adView.findViewById(R.id.ad_title);
    final TextView  adBody         = (TextView)adView.findViewById(R.id.ad_body);
    final ImageView adImage        = (ImageView)adView.findViewById(R.id.ad_image);
    final TextView  adCallToAction = (TextView)adView.findViewById(R.id.ad_call_to_action);

    adView.setHeadlineView(adTitle);
    adView.setBodyView(adBody);
    adView.setImageView(adImage);
    adView.setCallToActionView(adCallToAction);
}