Android admob interstitial ads don't show

Question

Manifest Permission

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

 import com.google.android.gms.ads.AdListener;
 import com.google.android.gms.ads.AdRequest;
 import com.google.android.gms.ads.InterstitialAd;   


...
...
InterstitialAd mInterstitialAd;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    mInterstitialAd = new InterstitialAd(this);
    mInterstitialAd.setAdUnitId("ca-app-pub-264***********");        

    AdRequest adRequest = new AdRequest.Builder()
     .addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
            .build();

    mInterstitialAd.loadAd(adRequest);

    // Prepare an Interstitial Ad Listener
    mInterstitialAd.setAdListener(new AdListener() {
        public void onAdLoaded() {
            // Call displayInterstitial() function
            displayInterstitial();
        }
    });
    ...
    ...
    ...

public void displayInterstitial() {
    // If Ads are loaded, show Interstitial else show nothing.
    if (mInterstitialAd.isLoaded()) {
        mInterstitialAd.show();
    }
}

Hello everyone E/dalvikvm(27771): Could not find class 'android.app.AppOpsManager', referenced from method com.google.android.gms.common.GooglePlayServicesUtil.zza

E/dalvikvm(27771): Could not find class 'android.app.AppOpsManager', referenced from method com.google.android.gms.common.kf.a

LogCat show this error.. Program run but it doesn't show ads.

Answer 1

To show an interstitial ad you need to ad an extra "activity" to your manifest, for example:

<activity
        android:name="com.google.android.gms.ads.AdActivity"
        android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" />

If this don't work, try adding

android:multiprocess="true" //or maybe
android:process=":remote"

---

And just an observation: it's not always a good idea to show the ad onLoad. As Google say here:

AdMob interstitials are full-page ads that appear in your app at natural breaks or transition points. A common use case is after a level is completed in a game.