AdManagerAdView

class AdManagerAdView : BaseAdView

public class MyActivity extends Activity {
    private AdManagerAdView adManagerAdView;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        LinearLayout layout = new LinearLayout(this);
        layout.setOrientation(LinearLayout.VERTICAL);

        // Create a banner ad. The ad size and ad unit ID must be set before calling loadAd.
        adManagerAdView = new AdManagerAdView(this);
        adManagerAdView.setAdSize(AdSize.SMART_BANNER);
        adManagerAdView.setAdUnitId("myAdUnitId");

        // Add the AdManagerAdView to the view hierarchy.
        layout.addView(adManagerAdView);

        // Start loading the ad.
        adManagerAdView.loadAd(new AdManagerAdRequest.Builder().build());

        setContentView(layout);
    }

    @Override
    public void onResume() {
        super.onResume();

        // Resume the AdManagerAdView.
        adManagerAdView.resume();
    }

    @Override
    public void onPause() {
        // Pause the AdManagerAdView.
        adManagerAdView.pause();

        super.onPause();
    }

    @Override
    public void onDestroy() {
        // Destroy the AdManagerAdView.
        adManagerAdView.destroy();

        super.onDestroy();
    }
}