android - Admob:无法初始化 AdView:缺少必需的 XML 属性 "adSize"

Question

按照官方链接中的步骤操作，也找不到问题出在哪里。我已经从以下位置下载了库:https://developers.google.com/mobile-ads-sdk/download#downloadandroid这是我的代码:在 MainActivity 中我添加:

adView = (AdView) findViewById(R.id.ad);
AdRequest adRequest = new AdRequest();   
adView.loadAd(adRequest); 

在 list 中:

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<activity android:name="com.google.ads.AdActivity"                      android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" />

还有 xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/lytMain"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:ads="http://schemas.android.com/apk/libs/com.google.ads"
    android:layout_width="fill_parent" android:layout_height="fill_parent">

    <com.google.ads.AdView
    android:id="@+id/ad"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    ads:adSize="BANNER"
    ads:adUnitId="ca-app-pub-xxxxxxxx/xxxxxx"
    ads:testDevices="TEST_EMULATOR"
    ads:loadAdOnCreate="true" >
</com.google.ads.AdView>
     <LinearLayout 
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_weight="2"
        android:gravity="center"
    >
    <TextView
        android:id="@+id/cargando"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Cargando resultados..."
        android:textColor="@android:color/black"
        android:textSize="20sp" />


   <ProgressBar
         android:id="@+id/progress"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         style="@android:style/Widget.ProgressBar.Small.Inverse"
         android:layout_marginRight="5dp" />

    <Button
     android:id="@+id/button"
     android:visibility="invisible"
     android:layout_marginTop="10dp"
     android:layout_height="wrap_content"
     android:layout_width="wrap_content"
     android:text="Ver resultados" />


</LinearLayout>
</LinearLayout>

Answer 1

在最新的 SDK 中:

XML:

<com.google.android.gms.ads.AdView 
    xmlns:ads="http://schemas.android.com/apk/res-auto"
    android:id="@+id/adView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    ads:adSize="BANNER"
    ads:adUnitId="xxxxxxxxxxxxxxxxxxxx" />

代码:

adView = (AdView) findViewById(R.id.adView);    
AdRequest adRequest = new AdRequest.Builder().build();
adView.loadAd(adRequest);