import com.vpon.ads.*;

public class MainActivity extends AppCompatActivity {
        
        private RelativeLayout mainLayout;
        private VponBanner vponBanner;
        private String bannerId = "License Key" ;
        // bannerId: Vpon License Key to get ad, please replace with your own one

        @Override
  	    protected void onCreate(Bundle savedInstanceState) {
            setContentView(R.layout.activity_main);
            mainLayout = findViewById(R.id.main_layout);

            VponBanner vponBanner = new VponBanner(context);
            vponBanner.setLicenseKey(bannerId);
            vponBanner.setAdSize(adSize);
            // adSize: The Banner Ad size that will be displayed

            VponAdRequest.Builder builder = new VponAdRequest.Builder();
            builder.setAutoRefresh(true);
            // Only available for Banner Ad, will auto refresh ad if set true
            builder.addTestDevice("your device advertising id");
            // Set your test device's GAID here if you're trying to get Vpon test ad
            vponBanner.loadAd(builder.build());
            // Set ad request and load ad

            mainLayout.addView(vponBanner);
  	}
}

vponBanner.setAdListener(new VponAdListener() {

    @Override
    public void onAdLoaded() {
        // Invoked if receive ad successfully
    }
    
    @Override
    public void onAdFailedToLoad(int errorCode) {
        // Invoked if received ad fail, check this callback to indicates what type of failure occurred
    }

    @Override
    public void onAdOpened() {
        // Invoked if the ad was clicked
    }

    @Override
    public void onAdLeftApplication() {
        // Invoked if user leave the app and the current app was backgrounded
    }
});

@Override
protected void onDestroy() {
    super.onDestroy();
    if (vponBanner != null) {
        vponBanner.destroy();
        vponBanner = null;
    }
}