在android中集成admob sdk时出错？

错误：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:ads="http://schemas.android.com/apk/libs/com.google.ads"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" 
    android:id="@+id/root">

    <com.google.ads.AdView
        android:id="@+id/ad"
        android:layout_width="fill_parent"
        android:layout_height="50dp"
        ads:adSize="BANNER"
        ads:adUnitId="a14b7042de197ce" />

</RelativeLayout>

01-21 23:40:31.462:E/AndroidRuntime（732）：致命异常：main
01-21 23:40:31.462:E/AndroidRuntime（732）：java.lang.RuntimeException:无法启动活动组件信息{com.example.sampadintegration/com.example.sampadintegration.MainActivity}:android.view.InflateException:二进制XML文件行#9:膨胀类com.google.ads.AdView时出错
01-21 23:40:31.462:E/AndroidRuntime（732）：在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:1956）
01-21 23:40:31.462:E/AndroidRuntime（732）：在android.app.ActivityThread.handleLaunchActivity（ActivityThread.java:1981）
01-21 23:40:31.462:E/AndroidRuntime（732）：在android.app.ActivityThread.access$600（ActivityThread.java:123）
01-21 23:40:31.462:E/AndroidRuntime（732）：在android.app.ActivityThread$H.handleMessage（ActivityThread.java:1147）
01-21 23:40:31.462:E/AndroidRuntime（732）：在android.os.Handler.dispatchMessage（Handler.java:99）上
01-21 23:40:31.462:E/AndroidRuntime（732）：在android.os.Looper.loop（Looper.java:137）
01-21 23:40:31.462:E/AndroidRuntime（732）：位于android.app.ActivityThread.main（ActivityThread.java:4424）
01-21 23:40:31.462:E/AndroidRuntime（732）：位于java.lang.reflect.Method.Invokenactive（本机方法）
01-21 23:40:31.462:E/AndroidRuntime（732）：在java.lang.reflect.Method.invoke（Method.java:511）
01-21 23:40:31.462:E/AndroidRuntime（732）：在com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run（ZygoteInit.java:784）
01-21 23:40:31.462:E/AndroidRuntime（732）：位于com.android.internal.os.ZygoteInit.main（ZygoteInit.java:551）
01-21 23:40:31.462:E/AndroidRuntime（732）：在dalvik.system.NativeStart.main（本机方法）
01-21 23:40:31.462:E/AndroidRuntime（732）：由以下原因引起：android.view.InflateException:二进制XML文件行#9:对类com.google.ads.AdView进行膨胀时出错
01-21 23:40:31.462:E/AndroidRuntime（732）：在android.view.LayoutInflater.createView（LayoutInflater.java:606）
01-21 23:40:31.462:E/AndroidRuntime（732）：在android.view.LayoutInflater.createViewFromTag（LayoutInflater.java:680）
01-21 23:40:31.462:E/AndroidRuntime（732）：在android.view.LayoutInflater.rInflate（LayoutInflater.java:739）
01-21 23:40:31.462:E/AndroidRuntime（732）：在android.view.LayoutInflater.inflate（LayoutInflater.java:489）
01-21 23:40:31.462:E/AndroidRuntime（732）：在android.view.LayoutInflater.inflate（LayoutInflater.java:396）
01-21 23:40:31.462:E/AndroidRuntime（732）：在android.view.LayoutInflater.inflate（LayoutInflater.java:352）
01-21 23:40:31.462:E/AndroidRuntime（732）：在com.android.internal.policy.impl.PhoneWindow.setContentView（PhoneWindow.java:251）上
01-21 23:40:31.462:E/AndroidRuntime（732）：位于android.app.Activity.setContentView（Activity.java:1835）
01-21 23:40:31.462:E/AndroidRuntime（732）：位于com.example.sampadintegration.MainActivity.onCreate（MainActivity.java:21）
01-21 23:40:31.462:E/AndroidRuntime（732）：在android.app.Activity.performCreate（Activity.java:4465）上
01-21 23:40:31.462:E/AndroidRuntime（732）：在android.app.Instrumentation.callActivityOnCreate（Instrumentation.java:1049）
01-21 23:40:31.462:E/AndroidRuntime（732）：在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:1920）上
01-2123:40:31.462:E/AndroidRuntime（732）：。。。还有11个
01-21 23:40:31.462:E/AndroidRuntime（732）：由以下原因引起：java.lang.reflect.InvocationTargetException
01-21 23:40:31.462:E/AndroidRuntime（732）：位于java.lang.reflect.Constructor.constructNative（本机方法）
01-21 23:40:31.462:E/AndroidRuntime（732）：位于java.lang.reflect.Constructor.newInstance（Constructor.java:417）
01-21 23:40:31.462:E/AndroidRuntime（732）：在android.view.LayoutInflater.createView（LayoutInflater.java:586）
01-2123:40:31.462:E/AndroidRuntime（732）：。。。还有22个
01-21 23:40:31.462:E/AndroidRuntime（732）：原因：java.lang.RuntimeException:无法初始化AdView:缺少必需的XML属性“adSize”
01-21 23:40:31.462:E/AndroidRuntime（732）：在com.google.ads.AdView.a（源文件：430）
01-21 23:40:31.462:E/AndroidRuntime（732）：在com.google.ads.AdView（源文件：126）
01-2123:40:31.462:E/AndroidRuntime（732）：。。。25多
01-21 23:40:31.462:E/AndroidRuntime（732）：原因：com.google.ads.internal.b:缺少必需的XML属性“adSize”
01-21 23:40:31.462:E/AndroidRuntime（732）：在com.google.ads.AdView.b（源文件：495）
01-21 23:40:31.462:E/AndroidRuntime（732）：在com.google.ads.AdView.a（源文件：364）
01-2123:40:31.462:E/AndroidRuntime（732）：。。。26多

请尝试使用此代码

XML

01-21 23:40:31.462: E/AndroidRuntime(732): FATAL EXCEPTION: main
01-21 23:40:31.462: E/AndroidRuntime(732): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.sampadintegration/com.example.sampadintegration.MainActivity}: android.view.InflateException: Binary XML file line #9: Error inflating class com.google.ads.AdView
01-21 23:40:31.462: E/AndroidRuntime(732):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
01-21 23:40:31.462: E/AndroidRuntime(732):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
01-21 23:40:31.462: E/AndroidRuntime(732):  at android.app.ActivityThread.access$600(ActivityThread.java:123)
01-21 23:40:31.462: E/AndroidRuntime(732):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
01-21 23:40:31.462: E/AndroidRuntime(732):  at android.os.Handler.dispatchMessage(Handler.java:99)
01-21 23:40:31.462: E/AndroidRuntime(732):  at android.os.Looper.loop(Looper.java:137)
01-21 23:40:31.462: E/AndroidRuntime(732):  at android.app.ActivityThread.main(ActivityThread.java:4424)
01-21 23:40:31.462: E/AndroidRuntime(732):  at java.lang.reflect.Method.invokeNative(Native Method)
01-21 23:40:31.462: E/AndroidRuntime(732):  at java.lang.reflect.Method.invoke(Method.java:511)
01-21 23:40:31.462: E/AndroidRuntime(732):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
01-21 23:40:31.462: E/AndroidRuntime(732):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
01-21 23:40:31.462: E/AndroidRuntime(732):  at dalvik.system.NativeStart.main(Native Method)
01-21 23:40:31.462: E/AndroidRuntime(732): Caused by: android.view.InflateException: Binary XML file line #9: Error inflating class com.google.ads.AdView
01-21 23:40:31.462: E/AndroidRuntime(732):  at android.view.LayoutInflater.createView(LayoutInflater.java:606)
01-21 23:40:31.462: E/AndroidRuntime(732):  at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:680)
01-21 23:40:31.462: E/AndroidRuntime(732):  at android.view.LayoutInflater.rInflate(LayoutInflater.java:739)
01-21 23:40:31.462: E/AndroidRuntime(732):  at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
01-21 23:40:31.462: E/AndroidRuntime(732):  at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
01-21 23:40:31.462: E/AndroidRuntime(732):  at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
01-21 23:40:31.462: E/AndroidRuntime(732):  at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:251)
01-21 23:40:31.462: E/AndroidRuntime(732):  at android.app.Activity.setContentView(Activity.java:1835)
01-21 23:40:31.462: E/AndroidRuntime(732):  at com.example.sampadintegration.MainActivity.onCreate(MainActivity.java:21)
01-21 23:40:31.462: E/AndroidRuntime(732):  at android.app.Activity.performCreate(Activity.java:4465)
01-21 23:40:31.462: E/AndroidRuntime(732):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
01-21 23:40:31.462: E/AndroidRuntime(732):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
01-21 23:40:31.462: E/AndroidRuntime(732):  ... 11 more
01-21 23:40:31.462: E/AndroidRuntime(732): Caused by: java.lang.reflect.InvocationTargetException
01-21 23:40:31.462: E/AndroidRuntime(732):  at java.lang.reflect.Constructor.constructNative(Native Method)
01-21 23:40:31.462: E/AndroidRuntime(732):  at java.lang.reflect.Constructor.newInstance(Constructor.java:417)
01-21 23:40:31.462: E/AndroidRuntime(732):  at android.view.LayoutInflater.createView(LayoutInflater.java:586)
01-21 23:40:31.462: E/AndroidRuntime(732):  ... 22 more
01-21 23:40:31.462: E/AndroidRuntime(732): Caused by: java.lang.RuntimeException: Could not initialize AdView: Required XML attribute "adSize" missing
01-21 23:40:31.462: E/AndroidRuntime(732):  at com.google.ads.AdView.a(SourceFile:430)
01-21 23:40:31.462: E/AndroidRuntime(732):  at com.google.ads.AdView.<init>(SourceFile:126)
01-21 23:40:31.462: E/AndroidRuntime(732):  ... 25 more
01-21 23:40:31.462: E/AndroidRuntime(732): Caused by: com.google.ads.internal.b: Required XML attribute "adSize" missing
01-21 23:40:31.462: E/AndroidRuntime(732):  at com.google.ads.AdView.b(SourceFile:495)
01-21 23:40:31.462: E/AndroidRuntime(732):  at com.google.ads.AdView.a(SourceFile:364)
01-21 23:40:31.462: E/AndroidRuntime(732):  ... 26 more

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痕迹似乎很清楚。您确定在执行之前已保存并正在使用此布局文件吗？

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 tools:context=".MainActivity" 
 android:id="@+id/root">

    <LinearLayout
    android:id="@+id/ad"
    android:layout_width="fill_parent"
    android:layout_height="50dp"/>

</RelativeLayout>

AdView adView = new AdView(this, AdSize.BANNER, "a14b7042de197ce");        
LinearLayout layout = (LinearLayout)findViewById(R.id.ad);        
layout.addView(adView);
adView.loadAd(new AdRequest());