refactor(admob): upgrade quickstart to admob 20.0.0

admob/app/build.gradle

@@ -38,19 +38,19 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.2.0'
     implementation 'com.google.android.material:material:1.3.0'
     implementation 'androidx.browser:browser:1.0.0'
-    implementation 'androidx.navigation:navigation-fragment-ktx:2.3.4'
-    implementation 'androidx.navigation:navigation-ui-ktx:2.3.4'
+    implementation 'androidx.navigation:navigation-fragment-ktx:2.3.5'
+    implementation 'androidx.navigation:navigation-ui-ktx:2.3.5'
 
-    implementation 'com.google.android.gms:play-services-ads:19.7.0'
+    implementation 'com.google.android.gms:play-services-ads:20.0.0'
 
     // Import the Firebase BoM (see: https://firebase.google.com/docs/android/learn-more#bom)
-    implementation platform('com.google.firebase:firebase-bom:26.6.0')
+    implementation platform('com.google.firebase:firebase-bom:27.0.0')
 
     // For an optimal experience using AdMob, add the Firebase SDK
     // for Google Analytics. This is recommended, but not required.
     implementation 'com.google.firebase:firebase-analytics'
 
-    debugImplementation "androidx.fragment:fragment-testing:1.3.1"
+    debugImplementation "androidx.fragment:fragment-testing:1.3.2"
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
     androidTestImplementation 'androidx.test:rules:1.3.0'
     androidTestImplementation 'androidx.test:runner:1.3.0'

admob/app/src/main/java/com/google/samples/quickstart/admobexample/java/FirstFragment.java

@@ -13,12 +13,13 @@
 import androidx.fragment.app.Fragment;
 import androidx.navigation.fragment.NavHostFragment;
 
-import com.google.android.gms.ads.AdListener;
 import com.google.android.gms.ads.AdRequest;
 import com.google.android.gms.ads.AdView;
-import com.google.android.gms.ads.InterstitialAd;
+import com.google.android.gms.ads.FullScreenContentCallback;
 import com.google.android.gms.ads.LoadAdError;
 import com.google.android.gms.ads.MobileAds;
+import com.google.android.gms.ads.interstitial.InterstitialAd;
+import com.google.android.gms.ads.interstitial.InterstitialAdLoadCallback;
 import com.google.samples.quickstart.admobexample.R;
 import com.google.samples.quickstart.admobexample.databinding.FragmentFirstBinding;
 
@@ -48,63 +49,64 @@ public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceStat
         MobileAds.initialize(getContext());
 
         mAdView = binding.adView;
-        AdRequest adRequest = new AdRequest.Builder().build();
-        mAdView.loadAd(adRequest);
-
-        // AdMob ad unit IDs are not currently stored inside the google-services.json file.
-        // Developers using AdMob can store them as custom values in a string resource file or
-        // simply use constants. Note that the ad units used here are configured to return only test
-        // ads, and should not be used outside this sample.
-
-        // Create an InterstitialAd object. This same object can be re-used whenever you want to
-        // show an interstitial.
-        mInterstitialAd = new InterstitialAd(getContext());
-        mInterstitialAd.setAdUnitId(getString(R.string.interstitial_ad_unit_id));
 
-        mInterstitialAd.setAdListener(new AdListener() {
-            @Override
-            public void onAdClosed() {
-                requestNewInterstitial();
-                beginSecondActivity();
-            }
-
-            @Override
-            public void onAdLoaded() {
-                // Ad received, ready to display
-                if (mLoadInterstitialButton != null) {
-                    mLoadInterstitialButton.setEnabled(true);
-                }
-            }
-
-            @Override
-            public void onAdFailedToLoad(LoadAdError error) {
-                Log.w(TAG, "onAdFailedToLoad:" + error.getMessage());
-            }
-        });
+        requestNewInterstitial();
 
         mLoadInterstitialButton = binding.loadInterstitialButton;
         mLoadInterstitialButton.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-                if (mInterstitialAd.isLoaded()) {
-                    mInterstitialAd.show();
+                if (mInterstitialAd != null) {
+                    mInterstitialAd.show(getActivity());
                 } else {
                     beginSecondActivity();
                 }
             }
         });
 
         // Disable button if an interstitial ad is not loaded yet.
-        mLoadInterstitialButton.setEnabled(mInterstitialAd.isLoaded());
+        mLoadInterstitialButton.setEnabled(mInterstitialAd != null);
     }
 
     /**
      * Load a new interstitial ad asynchronously.
      */
     private void requestNewInterstitial() {
         AdRequest adRequest = new AdRequest.Builder().build();
+        mAdView.loadAd(adRequest);
+
+        // AdMob ad unit IDs are not currently stored inside the google-services.json file.
+        // Developers using AdMob can store them as custom values in a string resource file or
+        // simply use constants. Note that the ad units used here are configured to return only test
+        // ads, and should not be used outside this sample.
+        InterstitialAd.load(getContext(), getString(R.string.interstitial_ad_unit_id), adRequest, new InterstitialAdLoadCallback() {
+            @Override
+            public void onAdLoaded(@NonNull InterstitialAd interstitialAd) {
+                super.onAdLoaded(interstitialAd);
+                mInterstitialAd = interstitialAd;
 
-        mInterstitialAd.loadAd(adRequest);
+                // Ad received, ready to display
+                if (mLoadInterstitialButton != null) {
+                    mLoadInterstitialButton.setEnabled(true);
+                }
+
+                mInterstitialAd.setFullScreenContentCallback(new FullScreenContentCallback() {
+                    @Override
+                    public void onAdDismissedFullScreenContent() {
+                        super.onAdDismissedFullScreenContent();
+                        requestNewInterstitial();
+                        beginSecondActivity();
+                    }
+                });
+            }
+
+            @Override
+            public void onAdFailedToLoad(@NonNull LoadAdError loadAdError) {
+                super.onAdFailedToLoad(loadAdError);
+                mInterstitialAd = null;
+                Log.w(TAG, "onAdFailedToLoad:" + loadAdError.getMessage());
+            }
+        });
     }
 
     private void beginSecondActivity() {
@@ -127,7 +129,7 @@ public void onResume() {
         if (mAdView != null) {
             mAdView.resume();
         }
-        if (!mInterstitialAd.isLoaded()) {
+        if (mInterstitialAd == null) {
             requestNewInterstitial();
         }
     }