import com.mustamara.yaftamobile.sdk.AdRequest;
import com.mustamara.yaftamobile.sdk.ads.banner.YaftaMobileBannerView;
...
public void onCreate(...) {
...

// Get reference to ad view object from XML layout, if needed. 
YaftaMobileBannerView  bannerView;
bannerView= (YaftaMobileBannerView)findViewById(R.id.bannerView);


//initialize the AdRequest 
AdRequest adRequest=new AdRequest();


// Fetch first Ad
bannerView.requestAd(adRequest);
...

}