Step 1: First of all create new Project in Android Studio then open build.gradle (Module App) and add Admob SDK dependency
implementation 'com.google.android.gms:play-services-ads:19.6.0'
Now open your Manifest.xml and Add meta data and internet permission
inside manifest tag
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
inside application tag
<!-- Sample AdMob app ID: ca-app-pub-3940256099942544~3347511713 -->
<meta-data
android:name="com.google.android.gms.ads.APPLICATION_ID"
android:value="ca-app-pub-3940256099942544~3347511713"/>
Step 2: Now open your activity xml and add the Banner Ads Xml
<com.google.android.gms.ads.AdView
android:id="@+id/banner"
android:layout_alignParentBottom="true"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
ads:adSize="SMART_BANNER"
ads:adUnitId="ca-app-pub-3940256099942544/6300978111">
</com.google.android.gms.ads.AdView>
Step 3: Let's write java code , now open layout class.java and write (Copy paste) these codes
first add AdView variable inside the class
AdView adView;
then add these code in onCreate() method
MobileAds.initialize(this, new OnInitializationCompleteListener() {
@Override
public void onInitializationComplete(InitializationStatus initializationStatus) {
}
});
adView = findViewById(R.id.banner);
AdRequest adRequest = new AdRequest.Builder().build();
adView.loadAd(adRequest);
AdView adView = new AdView(this);
adView.setAdSize(AdSize.SMART_BANNER);
adView.setAdListener(new AdListener(){
@Override
public void onAdFailedToLoad(LoadAdError loadAdError) {
AdRequest adRequest = new AdRequest.Builder().build();
adView.loadAd(adRequest);
super.onAdFailedToLoad(loadAdError);
}
});
Finally you have successfully Implement Banners Ad's in your Android App
