Mostrar anuncios nativos en Android

class NativeAdActivity : AppCompatActivity(), NativeAdRequestListener, NativeAdEventListener {
    private lateinit var nativeAdRequest: NativeAdRequest
    private var nativeAdResponse: NativeAdResponse? = null
    private lateinit var nativeContainer: View

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_native)

        nativeContainer = findViewById(R.id.native_ad_container)
        nativeAdRequest = NativeAdRequest(this, "123456") // Create a request for the placement ID
        nativeAdRequest.listener = this // Set the request listener
        nativeAdRequest.loadAd() // Load the ad
    }

    override fun onAdLoaded(response: NativeAdResponse) {
        nativeAdResponse = response
        val mainImageUrl = response.imageUrl // Pass the main image URL to your app's image-loading implementation
        val iconImageUrl = response.iconUrl // Pass the icon image URL to your app's image-loading implementation
        findViewById<TextView>(R.id.native_ad_title).text = response.title // Render the title
        findViewById<TextView>(R.id.native_ad_sponsored_by).text = response.sponsoredBy // Render the sponsor name
        findViewById<TextView>(R.id.native_ad_body).text = response.description // Render the body text
        response.adStarRating?.let { rating ->
            findViewById<TextView>(R.id.native_ad_rating).text = "${rating.value}/${rating.scale}" // Render the rating
        }
        val privacyUrl = response.privacyLink // Get the privacy URL
        val callToActionButton = findViewById<Button>(R.id.native_ad_call_to_action)
        callToActionButton.text = response.callToAction // Render the call-to-action text

        NativeAdSDK.unRegisterTracking(nativeContainer) // Stop tracking any previous ad in the container
        NativeAdSDK.registerTracking(
            response,
            nativeContainer,
            listOf(callToActionButton),
            this
        ) // Track impressions and CTA clicks
        nativeContainer.visibility = View.VISIBLE
    }

    override fun onAdFailed(errorCode: ResultCode, adResponseInfo: ANAdResponseInfo?) {
        Log.e("NativeAdActivity", "Native ad failed to load: ${errorCode.message}")
    }

    override fun onAdImpression() = Unit
    override fun onAdWasClicked() = Unit
    override fun onAdWasClicked(clickUrl: String, fallbackURL: String) = Unit
    override fun onAdWillLeaveApplication() = Unit
    override fun onAdAboutToExpire() = Unit
    override fun onAdExpired() = Unit

    override fun onDestroy() {
        NativeAdSDK.unRegisterTracking(nativeContainer) // Stop tracking and complete the viewability session
        nativeAdResponse = null
        super.onDestroy()
    }
}

public class NativeAdActivity extends AppCompatActivity
        implements NativeAdRequestListener, NativeAdEventListener {
    private NativeAdRequest nativeAdRequest;
    private NativeAdResponse nativeAdResponse;
    private View nativeContainer;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_native);

        nativeContainer = findViewById(R.id.native_ad_container);
        nativeAdRequest = new NativeAdRequest(this, "123456"); // Create a request for the placement ID
        nativeAdRequest.setListener(this); // Set the request listener
        nativeAdRequest.loadAd(); // Load the ad
    }

    @Override
    public void onAdLoaded(NativeAdResponse response) {
        nativeAdResponse = response;
        String mainImageUrl = response.getImageUrl(); // Pass the main image URL to your app's image-loading implementation
        String iconImageUrl = response.getIconUrl(); // Pass the icon image URL to your app's image-loading implementation
        ((TextView) findViewById(R.id.native_ad_title)).setText(response.getTitle()); // Render the title
        ((TextView) findViewById(R.id.native_ad_sponsored_by)).setText(response.getSponsoredBy()); // Render the sponsor name
        ((TextView) findViewById(R.id.native_ad_body)).setText(response.getDescription()); // Render the body text
        NativeAdResponse.Rating rating = response.getAdStarRating();
        if (rating != null) {
            ((TextView) findViewById(R.id.native_ad_rating)).setText(
                rating.getValue() + "/" + rating.getScale()); // Render the rating
        }
        String privacyUrl = response.getPrivacyLink(); // Get the privacy URL
        Button callToActionButton = findViewById(R.id.native_ad_call_to_action);
        callToActionButton.setText(response.getCallToAction()); // Render the call-to-action text

        NativeAdSDK.unRegisterTracking(nativeContainer); // Stop tracking any previous ad in the container
        NativeAdSDK.registerTracking(
            response,
            nativeContainer,
            Arrays.asList(callToActionButton),
            this
        ); // Track impressions and CTA clicks
        nativeContainer.setVisibility(View.VISIBLE);
    }

    @Override
    public void onAdFailed(ResultCode errorCode, ANAdResponseInfo adResponseInfo) {
        Log.e("NativeAdActivity", "Native ad failed to load: " + errorCode.getMessage());
    }

    @Override public void onAdImpression() {}
    @Override public void onAdWasClicked() {}
    @Override public void onAdWasClicked(String clickUrl, String fallbackURL) {}
    @Override public void onAdWillLeaveApplication() {}
    @Override public void onAdAboutToExpire() {}
    @Override public void onAdExpired() {}

    @Override
    protected void onDestroy() {
        NativeAdSDK.unRegisterTracking(nativeContainer); // Stop tracking and complete the viewability session
        nativeAdResponse = null;
        super.onDestroy();
    }
}

private fun loadOpenRTBNativeAd() {
    nativeAdRequest = NativeAdRequest(this, "123456") // Create a request for the placement ID
    nativeAdRequest.listener = this // Set the request listener
    val openRTBAssets = JSONObject().apply {
        put("ver", "1.2") // Set the OpenRTB Native version
        put("privacy", 1) // Request privacy information
        put("ext", JSONObject().put("foo", "bar")) // Add a custom request extension
        put("assets", JSONArray().apply {
            put(JSONObject("""{"id":1,"required":1,"title":{"len":300}}""")) // Request title
            put(JSONObject("""{"id":2,"required":1,"data":{"type":2}}""")) // Request body text
            put(JSONObject("""{"id":3,"required":0,"data":{"type":1}}""")) // Request sponsor name
            put(JSONObject("""{"id":4,"required":0,"img":{"type":3}}""")) // Request main image
            put(JSONObject("""{"id":5,"required":0,"data":{"type":12}}""")) // Request CTA text
            put(JSONObject("""{"id":6,"required":0,"img":{"type":1,"hmin":50,"wmin":50}}""")) // Request icon
            put(JSONObject("""{"id":7,"required":0,"data":{"type":4}}""")) // Request likes
            put(JSONObject("""{"id":8,"required":0,"data":{"type":6}}""")) // Request price
            put(JSONObject("""{"id":9,"required":0,"data":{"type":11}}""")) // Request display URL
        })
    }
    nativeAdRequest.openRTBAssets = openRTBAssets // Set requested OpenRTB Native assets
    nativeAdRequest.loadAd() // Load the ad
}

override fun onAdLoaded(response: NativeAdResponse) {
    val openRTBNative = response.openRTBNative
    val responseAssets = openRTBNative.optJSONArray("assets")
    val assetsById = mutableMapOf<Int, JSONObject>()
    for (index in 0 until (responseAssets?.length() ?: 0)) {
        val asset = responseAssets?.optJSONObject(index)
        if (asset != null) {
            assetsById[asset.optInt("id")] = asset
        }
    }
    val title = response.title // Or: assetsById[1]?.optJSONObject("title")?.optString("text")
    val body = response.description // Or: assetsById[2]?.optJSONObject("data")?.optString("value")
    val mainImageUrl = response.imageUrl // Or: assetsById[4]?.optJSONObject("img")?.optString("url")
    val callToAction = response.callToAction // Or: assetsById[5]?.optJSONObject("data")?.optString("value")
    val iconImageUrl = response.iconUrl // Or: assetsById[6]?.optJSONObject("img")?.optString("url")
    val likes = assetsById[7]?.optJSONObject("data")?.optString("value") // Match request ID 7
    val price = assetsById[8]?.optJSONObject("data")?.optString("value") // Match request ID 8
    val displayUrl = assetsById[9]?.optJSONObject("data")?.optString("value") // Match request ID 9
    val customExtension = openRTBNative.optJSONObject("ext")
    val customValue = customExtension?.optString("foo") // Read a custom response extension
    val link = openRTBNative.optJSONObject("link")
    val clickUrl = link?.optString("url")
    val clickFallbackUrl = link?.optString("fallback")
}

private void loadOpenRTBNativeAd() {
    nativeAdRequest = new NativeAdRequest(this, "123456"); // Create a request for the placement ID
    nativeAdRequest.setListener(this); // Set the request listener
    JSONArray assets = new JSONArray()
        .put(new JSONObject().put("id", 1).put("required", 1)
            .put("title", new JSONObject().put("len", 300))) // Request title
        .put(new JSONObject().put("id", 2).put("required", 1)
            .put("data", new JSONObject().put("type", 2))) // Request body text
        .put(new JSONObject().put("id", 3).put("required", 0)
            .put("data", new JSONObject().put("type", 1))) // Request sponsor name
        .put(new JSONObject().put("id", 4).put("required", 0)
            .put("img", new JSONObject().put("type", 3))) // Request main image
        .put(new JSONObject().put("id", 5).put("required", 0)
            .put("data", new JSONObject().put("type", 12))) // Request CTA text
        .put(new JSONObject().put("id", 6).put("required", 0)
            .put("img", new JSONObject().put("type", 1).put("hmin", 50).put("wmin", 50))) // Request icon
        .put(new JSONObject().put("id", 7).put("required", 0)
            .put("data", new JSONObject().put("type", 4))) // Request likes
        .put(new JSONObject().put("id", 8).put("required", 0)
            .put("data", new JSONObject().put("type", 6))) // Request price
        .put(new JSONObject().put("id", 9).put("required", 0)
            .put("data", new JSONObject().put("type", 11))); // Request display URL
    JSONObject openRTBAssets = new JSONObject()
        .put("ver", "1.2")
        .put("privacy", 1)
        .put("ext", new JSONObject().put("foo", "bar")) // Add a custom request extension
        .put("assets", assets);
    nativeAdRequest.setOpenRTBAssets(openRTBAssets); // Set requested OpenRTB Native assets
    nativeAdRequest.loadAd(); // Load the ad
}

@Override
public void onAdLoaded(NativeAdResponse response) {
    JSONObject openRTBNative = response.getOpenRTBNative();
    JSONArray responseAssets = openRTBNative.optJSONArray("assets");
    Map<Integer, JSONObject> assetsById = new HashMap<>();
    if (responseAssets != null) {
        for (int index = 0; index < responseAssets.length(); index++) {
            JSONObject asset = responseAssets.optJSONObject(index);
            if (asset != null) {
                assetsById.put(asset.optInt("id"), asset);
            }
        }
    }
    String title = response.getTitle(); // Or: assetsById.get(1).optJSONObject("title").optString("text")
    String body = response.getDescription(); // Or: assetsById.get(2).optJSONObject("data").optString("value")
    String mainImageUrl = response.getImageUrl(); // Or: assetsById.get(4).optJSONObject("img").optString("url")
    String callToAction = response.getCallToAction(); // Or: assetsById.get(5).optJSONObject("data").optString("value")
    String iconImageUrl = response.getIconUrl(); // Or: assetsById.get(6).optJSONObject("img").optString("url")
    JSONObject likesAsset = assetsById.get(7);
    JSONObject priceAsset = assetsById.get(8);
    JSONObject displayUrlAsset = assetsById.get(9);
    JSONObject likesData = likesAsset != null ? likesAsset.optJSONObject("data") : null;
    JSONObject priceData = priceAsset != null ? priceAsset.optJSONObject("data") : null;
    JSONObject displayUrlData = displayUrlAsset != null ? displayUrlAsset.optJSONObject("data") : null;
    String likes = likesData != null ? likesData.optString("value") : null; // Match request ID 7
    String price = priceData != null ? priceData.optString("value") : null; // Match request ID 8
    String displayUrl = displayUrlData != null ? displayUrlData.optString("value") : null; // Match request ID 9
    JSONObject customExtension = openRTBNative.optJSONObject("ext");
    String customValue = customExtension != null ? customExtension.optString("foo") : null; // Read a custom response extension
    JSONObject link = openRTBNative.optJSONObject("link");
    String clickUrl = link != null ? link.optString("url") : null;
    String clickFallbackUrl = link != null ? link.optString("fallback") : null;
}

val nativeElements = response.nativeElements[NativeAdResponse.NATIVE_ELEMENT_OBJECT] as? JSONObject
val title = response.title // Or: nativeElements?.optString("title")
val body = response.description // Or: nativeElements?.optString("desc")
val mainImageUrl = response.imageUrl // Or: nativeElements?.optJSONObject("main_img")?.optString("url")
val iconImageUrl = response.iconUrl // Or: nativeElements?.optJSONObject("icon")?.optString("url")
val callToAction = response.callToAction // Or: nativeElements?.optString("ctatext")
val likes = nativeElements?.optString("likes")
val price = nativeElements?.optString("price")
val link = nativeElements?.optJSONObject("link")
val clickUrl = link?.optString("url")
val clickFallbackUrl = link?.optString("fallback_url")

Object element = response.getNativeElements().get(NativeAdResponse.NATIVE_ELEMENT_OBJECT);
if (element instanceof JSONObject) {
    JSONObject nativeElements = (JSONObject) element;
    String title = response.getTitle(); // Or: nativeElements.optString("title")
    String body = response.getDescription(); // Or: nativeElements.optString("desc")
    String mainImageUrl = response.getImageUrl(); // Or: nativeElements.optJSONObject("main_img").optString("url")
    String iconImageUrl = response.getIconUrl(); // Or: nativeElements.optJSONObject("icon").optString("url")
    String callToAction = response.getCallToAction(); // Or: nativeElements.optString("ctatext")
    String likes = nativeElements.optString("likes");
    String price = nativeElements.optString("price");
    JSONObject link = nativeElements.optJSONObject("link");
    String clickUrl = link != null ? link.optString("url") : null;
    String clickFallbackUrl = link != null ? link.optString("fallback_url") : null;
}

nativeAdRequest.shouldLoadImage(true) // Preload the main image
nativeAdRequest.shouldLoadIcon(true) // Preload the icon image
nativeAdRequest.loadAd() // Load the ad

val mainImage = response.image // Get the preloaded main image
val iconImage = response.icon // Get the preloaded icon image

nativeAdRequest.shouldLoadImage(true); // Preload the main image
nativeAdRequest.shouldLoadIcon(true); // Preload the icon image
nativeAdRequest.loadAd(); // Load the ad

Bitmap mainImage = response.getImage(); // Get the preloaded main image
Bitmap iconImage = response.getIcon(); // Get the preloaded icon image