Admob 广告没有出现在我的 android 应用程序中。我已经使用 XML 方法实现了 admob 代码。虽然没有出现添加，但它正在向 admob 发送请求 ..（8 个请求，填充率为 100%）。我错过了什么？以及如何在 admob 广告的 XML 实现中启用测试模式？
这是我的主要 xml 文件：
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/ScrollView01"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@layout/back2"
android:orientation="vertical"
android:padding="30dip" >
<com.google.ads.AdView
xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"
android:id="@+id/adView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
ads:adSize="BANNER"
ads:adUnitId="AdMob ID"
ads:loadAdOnCreate="true"
ads:testDevices="TEST_EMULATOR" />
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="60dp"
android:text="@string/hello"
android:textSize="15sp" />
<Button
android:id="@+id/button1"
android:layout_width="fill_parent"
android:layout_height="60dp"
android:layout_marginTop="50dp"
android:background="@color/buttonc1"
android:text="@string/tutorials"
android:textSize="21sp" />
<Button
android:id="@+id/button2"
android:layout_width="fill_parent"
android:layout_height="60dp"
android:layout_marginTop="30dp"
android:background="@color/buttonc3"
android:text="@string/themes"
android:textSize="21sp" />
<Button
android:id="@+id/button3"
android:layout_width="fill_parent"
android:layout_height="60dp"
android:layout_marginTop="30dp"
android:background="@color/buttonc2"
android:text="@string/gadgets"
android:textSize="21sp" />
<Button
android:id="@+id/button4"
android:layout_width="fill_parent"
android:layout_height="60dp"
android:layout_marginTop="30dp"
android:background="@color/buttonc4"
android:text="@string/networking"
android:textSize="21sp" />
<Button
android:id="@+id/button5"
android:layout_width="fill_parent"
android:layout_height="60dp"
android:layout_marginTop="30dp"
android:background="@layout/button5"
android:text="@string/win8index"
android:textColor="#D5D5D5"
android:textSize="21sp" />
</LinearLayout>
</ScrollView>
这是 manifest.xml 文件
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="org.core.mywindows8"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="org.core.mywindows8.Corefile"
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=".Contenturl"
android:label="My Windows 8" >
</activity>
<activity
android:name=".Tutorial"
android:label="Tutorial Categories" >
</activity>
<activity
android:name=".MainActivity"
android:label="General Troubleshoot" >
</activity>
<activity
android:name=".Myfeed"
android:label="Tutorial Categories" >
</activity>
<activity
android:name=".MyWindows"
android:label="My Windows 8" >
</activity>
<activity
android:name=".Topic"
android:label="Tutorial Categories" >
</activity>
<activity
android:name=".ActivityNet"
android:label="Networking and Internet" >
</activity>
<activity
android:name=".Appear"
android:label="Windows 8 Customization Guide" >
</activity>
<activity
android:name=".HD"
android:label="Hardware and Drivers" >
</activity>
<activity
android:name=".Index"
android:label="Windows 8 Master Index" >
</activity>
<activity
android:name=".Inter"
android:label="Networking Articles" >
</activity>
<activity
android:name=".Short"
android:label="Shortcut and Context Menu" >
</activity>
<activity
android:name=".StartSc"
android:label="Taskbar and Start Screen" >
</activity>
<activity
android:name=".Tab"
android:label="Windows 8 Tablet" >
</activity>
<activity
android:name=".UA"
android:label="Windows 8 User Account" >
</activity>
<activity
android:name=".Update"
android:label="Windows 8 Updates and Gadgets" >
</activity>
<activity
android:name=".WinTheme"
android:label="Windows 8 Themes" >
</activity>
<activity
android:name=".MainActivity1"
android:label="System and Security" >
</activity>
<activity
android:name="com.google.ads.AdActivity"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" />
</application>
</manifest>