Step by step to insert both banner and interstitial ads in android apps.

If you are struggling to insert both banner and interstitial ads in android apps then follow my procedure. This is how I inserted both ads in my android application. The process is very simple and easy.

Step 1:

First of all, you need a google ads dependencies to run google ads in your android apps. So, let’s add google ads dependencies first.

 implementation 'com.google.android.gms:play-services-ads:18.3.0'

Add the above line in your project build.gradle(Module: app) inside dependencies. After this sync your project. You will get the sync now button on the top right corner. Click and wait until the sync finished.

Step 2:

Now go activity.xml file and paste the following code in your layout.

<com.google.android.gms.ads.AdView
        android:id="@+id/adView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        ads:adSize="BANNER"
        ads:adUnitId="@string/banner_ad_unit_id"
        android:layout_alignParentBottom="true">
    </com.google.android.gms.ads.AdView>

within the same file add the following line in the header

xmlns:ads="http://schemas.android.com/apk/res-auto"

The activity will looks like the following

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:ads="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/background">

    <Button
        android:layout_width="650dp"
        android:layout_height="80dp"
        android:text="@string/test"
        android:id="@+id/btnpt1"
        android:layout_marginTop="@dimen/vertical_gap"
        android:background="@drawable/button_selector"
        android:textSize="@dimen/text"
        android:textColor="@color/white"
        android:onClick="practicetest1"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true" />

    <com.google.android.gms.ads.AdView
        android:id="@+id/adView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        ads:adSize="BANNER"
        ads:adUnitId="@string/banner_ad_unit_id"
        android:layout_alignParentBottom="true">
    </com.google.android.gms.ads.AdView>
</RelativeLayout>

Step 3:

Check you manifest.xml has the following internet access permission or not. If you have not added before, its a time to add now.

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

And Add your AdMob Application ID, it can be found in your Admob Application.

<manifest>
    <application>
        <meta-data
            android:name="com.google.android.gms.ads.APPLICATION_ID"
            android:value="ca-app-pub-xxxxxxxxxxxxxxxx~yyyyyyyyyy"/>
    </application>
</manifest>

Step 4:

Now, Open the MainActivity.java file declare the following two lines.

public class MainActivity extends AppCompatActivity {
private InterstitialAd interstitial;
}

In the same MainActivity.java file, add the following code inside onCreate() method.

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

// Interstitial Ad
interstitial = new InterstitialAd(MainActivity.this);
interstitial.setAdUnitId(getString(R.string.admob_interstitial_id));

interstitial.loadAd(adRequest);
interstitial.setAdListener(new AdListener() {
    public void onAdLoaded() {
        displayInterstitial();
    }
});

Add the below function calling code before the last MainActivity.java closing curl.

public void displayInterstitial() {
if (interstitial.isLoaded()) {
interstitial.show();
}
}

Step 5:

Now, the last step is to define ad unit id in string.xml file

Add the below two code inside string.xml file.

<string name="banner_ad_unit_id">ca-app-pub-3940256099942544/6300978111</string>
    <string name="admob_interstitial_id">ca-app-pub-3940256099942544/1033173712</string>

These are the Test Ads Unit Id. Before release, your app, make sure you change unit_id into your own.

That’s it.

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