How to know if AdMob ad has been loaded

Question

My Andorid app works offline and online. It displays ads when it is in online mode. In a scenario where it is working in offline mode and user switches the internet connectivity on, I want to know if the ad is already loaded. If not, then I would load a new ad. I looked at AdMob API (AdView class) but could not find something that does this.

Here is the implementation of my AdListener according to the answer from @Hounshell. But none of the methods implemented here are getting executed.

        adView.setAdListener(new AdListener() {          @Override         public void onReceiveAd(Ad arg0) {             Toast.makeText(act, "Ad received",Toast.LENGTH_LONG).show();         }          @Override         public void onPresentScreen(Ad arg0) {         }          @Override         public void onLeaveApplication(Ad arg0) {             // TODO Auto-generated method stub          }          @Override         public void onFailedToReceiveAd(Ad arg0, ErrorCode arg1) {             Toast.makeText(act, "Failed to receive Ad",Toast.LENGTH_LONG).show();         }          @Override         public void onDismissScreen(Ad arg0) {             // TODO Auto-generated method stub          }     }); 

And part of main.xml that covers the AdView

<FrameLayout                      android:layout_width="fill_parent"                     android:layout_height="50dp"                     >                 <com.google.ads.AdView                     xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"                     android:id="@+id/adView"                     android:layout_width="fill_parent"                     android:layout_height="fill_parent"                     ads:adSize="BANNER"                     ads:adUnitId="xxxxxxxxxxxxxxxx"                     ads:loadAdOnCreate="true" />                 </FrameLayout> 

Answer 1

From https://developers.google.com/mobile-ads-sdk/docs/android/intermediate#adlistener

AdView.setAdListener(new AdListener() {       // Implement AdListener     }); 

Your AdListener's onReceiveAd() will be called when an ad is available, onFailedToReceiveAd() will be called whan an ad isn't available with a code explaining why (including network not available and no fill)

Update:

Same basic answer, new URL: https://developers.google.com/admob/android/banner?hl=en

Answer 2

Simply...!!!

final AdView mAdView = (AdView) findViewById(R.id.adView);         mAdView.setVisibility(View.GONE);     mAdView.setAdListener(new AdListener() {         private void showToast(String message) {             Toast.makeText(getApplicationContext(), message, Toast.LENGTH_SHORT).show();         }          @Override         public void onAdLoaded() {             showToast("Ad loaded.");             if (mAdView.getVisibility() == View.GONE) {                 mAdView.setVisibility(View.VISIBLE);             }         }          @Override         public void onAdFailedToLoad(int errorCode) {             showToast(String.format("Ad failed to load with error code %d.", errorCode));         }          @Override         public void onAdOpened() {             showToast("Ad opened.");         }          @Override         public void onAdClosed() {             showToast("Ad closed.");         }          @Override         public void onAdLeftApplication() {             showToast("Ad left application.");         }     });       AdRequest adRequest = new AdRequest.Builder().build();     mAdView.loadAd(adRequest);