admob连接被拒绝

| 我刚刚开始将admob添加到我的android应用程序中，并开始使用admob网站上提供的横幅必需品示例。这是示例代码。

public class BannerEssentials extends Activity{
  @Override
  public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    // Lookup R.layout.main
    LinearLayout layout = (LinearLayout)findViewById(R.id.linearLayout);

    // Create the adView
    // Please replace MY_BANNER_UNIT_ID with your AdMob Publisher ID
    AdView adView = new AdView(this, AdSize.BANNER, \"a14da528179106a\");

    // Add the adView to it
    layout.addView(adView);

    // Initiate a generic request to load it with an ad
    AdRequest request = new AdRequest();
    request.setTesting(true);

    adView.loadAd(request);            
  }
}

我已经使用admob设置了我的帐户，并且一切似乎都准备就绪，当我在logCat中查看时，看到以下针对admob的连接被拒绝的错误消息。其他人是否遇到过此问题，如果是，您如何解决？在此先感谢您的帮助。

04-13 11:39:33.410: WARN/Ads(5662): java.net.ConnectException: r.admob.com/127.0.0.1:80 - Connection refused
04-13 11:39:33.410: WARN/Ads(5662):     at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:254)
04-13 11:39:33.410: WARN/Ads(5662):     at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:533)
04-13 11:39:33.410: WARN/Ads(5662):     at java.net.Socket.connect(Socket.java:1055)
04-13 11:39:33.410: WARN/Ads(5662):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.<init>(HttpConnection.java:62)
04-13 11:39:33.410: WARN/Ads(5662):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnectionPool.get(HttpConnectionPool.java:88)
04-13 11:39:33.410: WARN/Ads(5662):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getHTTPConnection(HttpURLConnectionImpl.java:927)
04-13 11:39:33.410: WARN/Ads(5662):     at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:909)
04-13 11:39:33.410: WARN/Ads(5662):     at b.a(Unknown Source)
04-13 11:39:33.410: WARN/Ads(5662):     at b.doInBackground(Unknown Source)
04-13 11:39:33.410: WARN/Ads(5662):     at android.os.AsyncTask$2.call(AsyncTask.java:185)
04-13 11:39:33.410: WARN/Ads(5662):     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
04-13 11:39:33.410: WARN/Ads(5662):     at java.util.concurrent.FutureTask.run(FutureTask.java:137)
04-13 11:39:33.410: WARN/Ads(5662):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068)
04-13 11:39:33.410: WARN/Ads(5662):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561)
04-13 11:39:33.410: WARN/Ads(5662):     at java.lang.Thread.run(Thread.java:1096)

我的清单文件如下。

<?xml version=\"1.0\" encoding=\"utf-8\"?>
<manifest xmlns:android=\"http://schemas.android.com/apk/res/android\"
      package=\"com.google.ads.example\"
      android:versionCode=\"1\"
      android:versionName=\"1.0\">
    <application android:icon=\"@drawable/icon\" android:label=\"@string/app_name\">
        <activity android:name=\".BannerEssentials\"
                  android:label=\"@string/app_name\">
            <intent-filter>
                <action android:name=\"android.intent.action.MAIN\" />
                <category android:name=\"android.intent.category.LAUNCHER\" />
            </intent-filter>
        </activity>
        <activity android:name=\"com.google.ads.AdActivity\" 
              android:configChanges=\"keyboard|keyboardHidden|orientation\"/>
    </application>
    <uses-permission android:name=\"android.permission.INTERNET\"/>
    <uses-permission android:name=\"android.permission.ACCESS_NETWORK_STATE\"/> 
    <uses-sdk android:minSdkVersion=\"3\" />

</manifest>