Banner

BannerAdSize.inlineSize(widthDp: Int, heightDp: Int)

BannerAdSize.fixedSize(widthDp: Int)

final BannerAdView bannerAd = new BannerAdView(this);

@NonNull
private BannerAdSize getAdSize() {
    final DisplayMetrics displayMetrics = getResources().getDisplayMetrics();
    final int screenHeight = Math.round(displayMetrics.heightPixels / displayMetrics.density);
    // Calculate the width of the ad, taking into account the padding in the ad container.
    int adWidthPixels = mBinding.adContainerView.getWidth();
    if (adWidthPixels == 0) {
        // If the ad hasn't been laid out, default to the full screen width
        adWidthPixels = displayMetrics.widthPixels;
    }
    final int adWidth = Math.round(adWidthPixels / displayMetrics.density);
    // Determine the maximum allowable ad height. The current value is given as an example.
    final int maxAdHeight = screenHeight / 2;

    return BannerAdSize.inline(this, adWidth, maxAdHeight);
}

public class AdaptiveInlineBannerAdActivity extends AppCompatActivity {
    @Nullable
    private BannerAdView mBannerAd = null;
    private ActivityInlineBannerAdBinding mBinding;

    public AdaptiveInlineBannerAdActivity() {
        super(R.layout.activity_inline_banner_ad);
    }

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mBinding = ActivityInlineBannerAdBinding.inflate(getLayoutInflater());
        setContentView(mBinding.getRoot());

        // Since we're loading the banner based on the adContainerView size,
        // we need to wait until this view is laid out before we can get the width
        mBinding.adContainerView.getViewTreeObserver().addOnGlobalLayoutListener(
                new ViewTreeObserver.OnGlobalLayoutListener() {
                    @Override
                    public void onGlobalLayout() {
                        mBinding.adContainerView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
                        mBannerAd = loadBannerAd(getAdSize());
                    }
                }
        );
    }

    @NonNull
    private BannerAdSize getAdSize() {
        final DisplayMetrics displayMetrics = getResources().getDisplayMetrics();
        final int screenHeight = Math.round(displayMetrics.heightPixels / displayMetrics.density);
        // Calculate the width of the ad, taking into account the padding in the ad container.
        int adWidthPixels = mBinding.adContainerView.getWidth();
        if (adWidthPixels == 0) {
            // If the ad hasn't been laid out, default to the full screen width
            adWidthPixels = displayMetrics.widthPixels;
        }
        final int adWidth = Math.round(adWidthPixels / displayMetrics.density);
        // Determine the maximum allowable ad height. The current value is given as an example.
        final int maxAdHeight = screenHeight / 2;

        return BannerAdSize.inline(this, adWidth, maxAdHeight);
    }

    @NonNull
    private BannerAdView loadBannerAd(@NonNull final BannerAdSize adSize) {
        final BannerAdView bannerAd = mBinding.banner;
        bannerAd.setAdSize(adSize);
        bannerAd.setBannerAdEventListener(new BannerAdEventListener() {
            @Override
            public void onAdLoaded() {
                // If this callback occurs after the activity is destroyed, you
                // must call destroy and return or you may get a memory leak.
                // Note `isDestroyed` is a method on Activity.
                if (isDestroyed() && mBannerAd != null) {
                    mBannerAd.destroy();
                }
            }

            @Override
            public void onAdFailedToLoad(@NonNull final AdRequestError adRequestError) {
                // Ad failed to load with AdRequestError.
                // Attempting to load a new ad from the onAdFailedToLoad() method is strongly discouraged.
            }

            @Override
            public void onAdClicked() {
                // Called when a click is recorded for an ad.
            }

            @Override
            public void onImpression(@Nullable ImpressionData impressionData) {
                // Called when an impression is recorded for an ad.
            }
        });
        final AdRequest adRequest = new AdRequest.Builder("your-ad-unit-id")
                // Methods in the AdRequest.Builder class can be used here to specify individual options settings.
                .build();
        bannerAd.loadAd(adRequest);
        return bannerAd;
    }
}

@NonNull
private BannerAdView loadBannerAd(@NonNull final BannerAdSize adSize) {
    final BannerAdView bannerAd = mBinding.banner;
    bannerAd.setBannerAdEventListener(new BannerAdEventListener() {
        @Override
        public void onAdLoaded() {
            // If this callback occurs after the activity is destroyed, you
            // must call destroy and return or you may get a memory leak.
            // Note `isDestroyed` is a method on Activity.
            if (isDestroyed() && mBannerAd != null) {
                mBannerAd.destroy();
            }
        }
        ...
    });
    ...
    return bannerAd;
}