Banner ads Implementation | How to ad banner ad into app | Android Studio

Banner Ads Implementation Code...

XML Code... 

?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    tools:context=".Translation">


    <WebView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/webView_translate"
        />

    <com.google.android.gms.ads.AdView
        android:id="@+id/adView"
        android:layout_width="300dp"
        android:layout_height="250dp"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        app:adSize="MEDIUM_RECTANGLE"
        app:adUnitId="ca-app-pub-000000000/000000000">

    </com.google.android.gms.ads.AdView>

</RelativeLayout>

Java Class Code...

private AdView mAdView;

//add coding
        mAdView = findViewById(R.id.adView);
        AdRequest adRequest = new AdRequest.Builder().build();
        mAdView.loadAd(adRequest);
        AdView adView = new AdView(this);

//ad coding starting.....

        adView.setAdSize(AdSize.LARGE_BANNER);

        adView.setAdUnitId("ca-app-pub-2692689882937391/8669833521");
// Add adView to your view hierarchy.

        mAdView.setAdListener(new AdListener() {
            @Override
            public void onAdLoaded() {
                // Code to be executed when an ad finishes loading.
                super.onAdLoaded();
                Toast.makeText(Translation.this,"Keep Learning",Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onAdFailedToLoad(LoadAdError adError) {
                // Code to be executed when an ad request fails.
                super.onAdFailedToLoad(adError);
                mAdView.loadAd(adRequest);
            }

            @Override
            public void onAdOpened() {
                // Code to be executed when an ad opens an overlay that
                // covers the screen.
                super.onAdOpened();
            }

            @Override
            public void onAdClicked() {
                // Code to be executed when the user clicks on an ad.
            }


            public void onAdLeftApplication() {
                // Code to be executed when the user has left the app.
            }

            @Override
            public void onAdClosed() {
                // Code to be executed when the user is about to return
                // to the app after tapping on an ad.
            }
        });

Paste this Above code into your onCreate method..

IF you have any problem please comment blow.