Adding Admob to libgdx

Add AdMob Ads without Firebase :

1. Put these lines inside build.gradle of android module.

   dependencies {
   
       compile 'com.google.android.gms:play-services-ads:10.2.4'
   }
   

2. Add permission in AndoidManifest.xml file

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

   Inside <application tag add Activity if want to use Interstitial Ads

   <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|screenLayout|uiMode|screenSize|smallestScreenSize"
             android:theme="@android:style/Theme.Translucent" />
   

3. AndroidLauncher class.

   public class AndroidLauncher extends AndroidApplication {
   
   private static final String adUnitId="ca-app-pub-xxxxxxxxxxxxxxxxxxxxx";
   private AdView adView;
   
   @Override
   protected void onCreate (Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       AndroidApplicationConfiguration config = new AndroidApplicationConfiguration();
   
       RelativeLayout layout = new RelativeLayout(this);
       RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT);
       layout.setLayoutParams(params);
   
       View gameView=initializeForView(new MyGdxGame(), config);
   
       RelativeLayout.LayoutParams gameViewParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
       gameViewParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
       gameViewParams.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
   
       gameView.setLayoutParams(gameViewParams);
       layout.addView(gameView);
   
       adView = new AdView(this);
       adView.setAdSize(AdSize.BANNER);
       adView.setAdUnitId(adUnitId);
   
       AdRequest.Builder adRequestBuilder = new AdRequest.Builder();
       adRequestBuilder.addTestDevice(AdRequest.DEVICE_ID_EMULATOR);
       adView.loadAd(adRequestBuilder.build());
   
       RelativeLayout.LayoutParams topParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
       topParams.addRule(RelativeLayout.ALIGN_PARENT_TOP,RelativeLayout.TRUE);
       topParams.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
       layout.addView(adView, topParams);
       adView.setBackgroundColor(android.graphics.Color.TRANSPARENT);
   
       setContentView(layout);
   }
   
   @Override
   protected void onResume() {
       super.onResume();
       adView.resume();
   }
   
   @Override
   protected void onPause() {
       super.onPause();
       adView.pause();
   }
   
   @Override
   protected void onDestroy() {
       super.onDestroy();
       adView.destroy();
   }
   }