尝试code我用：

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

    setContentView(R.layout.activity_main);

    final DisplayMetrics displayMetrics = new DisplayMetrics();
    this.getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);


    this.adView = new AdView(this);
    this.adView.setAdSize(com.google.android.gms.ads.AdSize.SMART_BANNER);
    this.adView.setAdUnitId("PUT YOUR NUMBER");
    com.google.android.gms.ads.AdRequest adrequest = new com.google.android.gms.ads.AdRequest.Builder().build(); //you can use test device as you did in your code


    this.adView.loadAd(adrequest);

    RelativeLayout layout = (RelativeLayout)findViewById(R.id.relativeLayout);
    RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);


    layout.addView(this.mRenderSurfaceView);



    layout.addView(this.adView, params);

}