title: Must I add adView.loadAd(new AdRequest()); to show Admob ad?
body: <p>The following code from a sample app, it works well, I find the Admob still can be displayed even if I delete  AdView adView = (AdView)this.findViewById(R.id.adViewabout) and loadAd(new AdRequest()).</p>
  
  <p>Why? Thanks!</p>
  
  <pre><code>public class AboutActivity  extends Activity{
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.about);     
  
          TextView mLink = (TextView) findViewById(R.id.tvMyLink);
          mLink.setMovementMethod(LinkMovementMethod.getInstance());
  
          // Look up the AdView as a resource and load a request.
          AdView adView = (AdView)this.findViewById(R.id.adViewabout);
          adView.loadAd(new AdRequest());
  
      }
  }
  
  
  &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"   
      android:layout_width="fill_parent"
      android:layout_height="fill_parent"
      android:paddingTop="3dip"
      android:background="@drawable/border_ui"
      android:orientation="vertical" &gt;
  
      &lt;TextView
          android:id="@+id/textView3"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:text="@string/appversion"
          android:paddingLeft="7dip"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;TextView
          android:id="@+id/textView1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:paddingLeft="7dip"
          android:text="V1.04" /&gt;
  
     &lt;TextView
          android:id="@+id/textView4"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:text="@string/myabout"
          android:layout_marginTop="8dip"
          android:paddingLeft="7dip"
          android:textAppearance="?android:attr/textAppearanceMedium" /&gt;
  
      &lt;TextView
          android:id="@+id/tvMyLink"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_marginBottom="25dip"
          android:paddingLeft="7dip"
          android:text="@string/mylink" /&gt;
  
      &lt;com.google.ads.AdView
          android:id="@+id/adViewabout"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          ads:adSize="SMART_BANNER"
          ads:adUnitId="a151bc26cd3bc22"
          ads:loadAdOnCreate="true" /&gt;
  
      &lt;TextView
          android:id="@+id/tvOnlyTake"
          android:layout_width="wrap_content"
          android:layout_height="0dip"   
          android:layout_weight="1"     
          android:text="" /&gt;
  
       &lt;Button
          android:id="@+id/btnClose"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_gravity="center"
          style="@style/myTextAppearance"
          android:text="@string/myreturn" /&gt;
  
  
  &lt;/LinearLayout&gt;
  </code></pre>