在manifest.xml文件中为admob添加元标记

Question

我正在尝试添加元标记以将admob添加到我的应用程序中，但它给了我错误。

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.deepak.indoreinfo"
    android:versionCode="1"
    android:versionName="1.0" >
    <uses-sdk
        android:minSdkVersion="9"
        android:targetSdkVersion="14" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.CALL_PHONE" />
    <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" >
        <meta-data android:name="com.google.android.gms.version"
               android:value="@integer/google_play_services_version"/>
        <activity
            android:name="com.deepak.indoreinfo.MainActivity"
            android:configChanges="orientation"
            android:label="@string/app_name"
            android:screenOrientation="portrait" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
         android:name="com.google.android.gms.ads.AdActivity"                                android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" />
</application>
</manifest>

它给了我错误找不到与给定名称匹配的资源（'value'与值'@ integer / google_play_services_version'）但是此值在库项目中可用