在应用上加载AdMob广告的问题

Question

我正在尝试在我的应用上显示广告横幅,但我似乎遇到了问题.每当我进入活动时,应用程序崩溃并在我尝试加载广告时提及某些内容,它是一个空引用.虽然如此,我并不积极.

以下是adview的xml:

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:ads="http://schemas.android.com/apk/res-auto"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:id="@+id/gameLayout">

    <com.google.android.gms.ads.AdView
        android:id="@+id/bannerAd"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        ads:adSize="BANNER"
        ads:adUnitId="MY_ADUNITID" />

</FrameLayout>

以下是使用广告的java代码:

//load ads
AdView adView = (AdView)findViewById(R.id.bannerAd);
AdRequest.Builder request = new AdRequest.Builder();
request.addTestDevice(AdRequest.DEVICE_ID_EMULATOR);
adView.loadAd(request.build());

这是logcat:

09-21 21:55:39.300: E/AndroidRuntime(1168): FATAL EXCEPTION: main
09-21 21:55:39.300: E/AndroidRuntime(1168): Process: com.project.llb, PID: 1168
09-21 21:55:39.300: E/AndroidRuntime(1168): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.twentytwentythree.sab/com.twentytwentythree.sab.runGraphics}: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.google.android.gms.ads.AdView.loadAd(com.google.android.gms.ads.AdRequest)' on a null object reference
09-21 21:55:39.300: E/AndroidRuntime(1168):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2596)
09-21 21:55:39.300: E/AndroidRuntime(1168):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2653)
09-21 21:55:39.300: E/AndroidRuntime(1168):     at android.app.ActivityThread.access$800(ActivityThread.java:156)
09-21 21:55:39.300: E/AndroidRuntime(1168):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1355)
09-21 21:55:39.300: E/AndroidRuntime(1168):     at android.os.Handler.dispatchMessage(Handler.java:102)
09-21 21:55:39.300: E/AndroidRuntime(1168):     at android.os.Looper.loop(Looper.java:157)
09-21 21:55:39.300: E/AndroidRuntime(1168):     at android.app.ActivityThread.main(ActivityThread.java:5872)
09-21 21:55:39.300: E/AndroidRuntime(1168):     at java.lang.reflect.Method.invoke(Native Method)
09-21 21:55:39.300: E/AndroidRuntime(1168):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:852)
09-21 21:55:39.300: E/AndroidRuntime(1168):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:668)
09-21 21:55:39.300: E/AndroidRuntime(1168): Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.google.android.gms.ads.AdView.loadAd(com.google.android.gms.ads.AdRequest)' on a null object reference
09-21 21:55:39.300: E/AndroidRuntime(1168):     at com.twentytwentythree.sab.runGraphics.onCreate(runGraphics.java:94)
09-21 21:55:39.300: E/AndroidRuntime(1168):     at android.app.Activity.performCreate(Activity.java:5312)
09-21 21:55:39.300: E/AndroidRuntime(1168):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1111)
09-21 21:55:39.300: E/AndroidRuntime(1168):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2552)
09-21 21:55:39.300: E/AndroidRuntime(1168):     ... 9 more

这是androidmanifest的代码:

<meta-data android:name="com.google.android.gms.version"
    android:value="@integer/google_play_services_version" />
    <activity
        android:name="com.google.android.gms.ads.AdActivity"
        android:configChanges="keyboard|keyboardHidden|orientation" >
    </activity>

现在我正在使用addTestDevice方法,因为我认为这是我需要使用的,因为我的应用还没有在市场上.我有我的admob帐户设置,我有这样的横幅设置.

如果您有任何想法,请告诉我.非常感谢.

Answer 1

R.id.bannerAd在您为活动/片段设置的内容中不可用.致电之前:

AdView adView = (AdView)findViewById(R.id.bannerAd);

你一定打过电话

setContentView(R.layout.MyLayoutContainingBannerAd);