Issues with Loading AdMob Ads on App
Solution 1
R.id.bannerAd is not available in the content you have set for your Activity/Fragment. Prior to calling:
AdView adView = (AdView)findViewById(R.id.bannerAd);
you must have called
setContentView(R.layout.MyLayoutContainingBannerAd);
Solution 2
I faced Similar issue. When i checked closely in resourse file There were two resourse file for my activity:
\res\layout\activity_main_lauch.xml
\res\layout-v21\activity_main_lauch.xml
I was modifing single file, hence it was throwing error. when i apply the change in both files it started working.
sboehnke
Updated on June 21, 2022Comments
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sboehnke almost 2 years
I am trying to have an ad banner display on my app and I seem to be having an issue. Anytime I go into the activity, the app crashes and mentions something about that when I am trying to load the ad, that it is a null reference. I am not positive why though.
Here is the xml for the adview:
<?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>
Here is the java code for using the ads:
//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());
Here is the 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
Here is the code from the androidmanifest:
<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>
Now I am using the addTestDevice method because I assume that is what I need to use since my app is not on the market place yet. I do have my admob account setup and I have the banner setup that way.
Please let me know if you have any ideas. Thanks a lot.
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sboehnke over 9 yearsAfter doing that now I have a box that comes up saying "Missing AdActivity with android.configChanges in AndroidManifest.xml" In my manifest i have the meta-data tag set with com.google.android.gms.version and the activity has a name com.google.android.gms.ads.AdActivity and configChanges to keyboard|keyboardHidden|orientation. No idea what the problem is.
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William over 9 yearsYou need to post your AndroidManifest, but it sounds like you have not specified all of the config changes that are required for the AdActivity.
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sboehnke over 9 yearsAdded keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize to my configChanges and it works now.
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wasimsandhu about 9 yearsThat method should be setContentView() not setContent() right?