Java Android Admob未在emulator中显示它为空

我一直在遵循android快速入门教程将Admob放在模拟器上，但它不起作用。我基本上是逐字复制了教程，但它不起作用。此外，我检查了日志，发现此错误找不到类“android.app.apposmanager”，参考方法com.google.android.gms.common.GooglePlayServicesUtil.zza。这似乎是他们的内部错误。我也刚刚升级到新的Android Studio 1.2.1.1，这是我的基本代码

Main.java

  protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        AdView mAdView = (AdView) findViewById(R.id.adView);
        AdRequest adRequest = new AdRequest.Builder().build();
        mAdView.loadAd(adRequest);
    }

acitivity\u main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    xmlns:ads="http://schemas.android.com/apk/res-auto"
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".Main">

    <TextView android:text="@string/hello_world" android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <com.google.android.gms.ads.AdView
        android:id="@+id/adView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        ads:adSize="BANNER"
        ads:adUnitId="@string/banner_ad_unit_id"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true">
    </com.google.android.gms.ads.AdView>

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example" >
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
    <application
        android:allowBackup="true"
        android:icon="@mipmap/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=".Main"
            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.android.gms.ads.AdActivity"
            android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"
            android:theme="@android:style/Theme.Translucent" />
    </application>

</manifest>

字符串XML

<resources>
    <string name="app_name">AdsenseCalculator</string>
    <string name="banner_ad_unit_id">ca-app-pub-3940256099942544/6300978111</string>
    <string name="hello_world">Hello world!</string>
    <string name="action_settings">Settings</string>
</resources>

Adsense计算器
ca-app-pub-3940256099942544/630978111
你好，世界！
设置

将此添加到您的代码中：

AdRequest adRequest = new AdRequest.Builder()
        .addTestDevice(AdRequest.DEVICE_ID_EMULATOR)    // remove when exporting signed APK
        .addTestDevice(getDeviceId())       // remove when exporting signed APK
        .build();

---

感谢您专门使用了AdRequest AdRequest=new AdRequest.Builder（）.addTestDevice（AdRequest.DEVICE_ID_EMULATOR.build（））；伟大的很乐意帮忙

AdRequest adRequest = new AdRequest.Builder()
        .addTestDevice(AdRequest.DEVICE_ID_EMULATOR)    // remove when exporting signed APK
        .addTestDevice(getDeviceId())       // remove when exporting signed APK
        .build();