问Admob -没有可显示的广告

EN

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.AdTest"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
    <activity android:name=".AdTest"
              android:label="@string/app_name">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
<!-- AdMobActivity definition -->
<activity android:name="com.google.ads.AdActivity"
android:configChanges="orientation|keyboard|keyboardHidden" />
</application>
<uses-sdk android:minSdkVersion="7"></uses-sdk>
<!-- AdMob SDK requires Internet permission -->
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/main"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
>
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
/>
</LinearLayout>

package com.AdTest;
import com.google.ads.*;
import com.google.ads.AdRequest.ErrorCode;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.LinearLayout;

public class AdTest extends Activity implements AdListener{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  LinearLayout layout = (LinearLayout)findViewById(R.id.main);
   AdView adView = new AdView(this, AdSize.BANNER, "anonymouse");
   // Unit ID is correct, I changed it on purpose while pasting here
    adView.setAdListener(this);
    layout.addView(adView);
    AdRequest request= new AdRequest();
    adView.loadAd(request);            
  }

 public void onFailedToReceiveAd(AdView adView)
    {
        Log.d("AdListener", "onFailedToReceiveAd");
    }

    public void onFailedToReceiveRefreshedAd(AdView adView)
    {
        Log.d("AdListener", "onFailedToReceiveRefreshedAd");
    }

    public void onReceiveAd(AdView adView)
    {
        Log.d("AdListener", "onReceiveAd");
    }

    public void onReceiveRefreshedAd(AdView adView)
    {
        Log.d("AdListener", "onReceiveRefreshedAd");
    }

    @Override
    public void onDismissScreen(Ad arg0) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onFailedToReceiveAd(Ad arg0, ErrorCode arg1) {
          Log.d("AdListener", "onFailedToReceiveAD");

    }

    @Override
    public void onLeaveApplication(Ad arg0) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onPresentScreen(Ad arg0) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onReceiveAd(Ad arg0) {
         Log.d("AdListener", "Received succesfully");

    }
}