How to implement Admob Interstitial Ads in Android Studio

In this blog, I will tell you about how to implement an Google Admob Interstitial Ads in Android Studio App. You will need to follow these steps.👇 

• Create Google ADMOB Account and get it approved.
• Add your App *just app name is enough at this time* and enable statistics.
• Create Ad unit and get API keys; App ID  , Ad Unit ID. 
• Use actual App_ID and Test_ID for interstitial ads in the program. (Don't use the actual Ad Unit ID

Launch the Android Studio. The code snippet for MainActivity.Java is: 

package com.codingtutorials.admobinterstitial;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.TextureView;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.MobileAds;
import com.google.android.gms.ads.initialization.InitializationStatus;
import com.google.android.gms.ads.initialization.OnInitializationCompleteListener;
import com.google.android.gms.ads.interstitial.InterstitialAd;
import com.google.android.gms.ads.interstitial.InterstitialAdLoadCallback;
public class MainActivity extends AppCompatActivity {
    private static final String AD_UNIT_ID = "   ";  % Your Ad Unit ID here 
    private Button load, show;
    private TextView text;
    private InterstitialAd interstitialAd;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        load = findViewById(R.id.LoadAdBtn);
        show = findViewById(R.id.ShowAdBtn);
        text = findViewById(R.id.text);

        MobileAds.initialize(this, new OnInitializationCompleteListener() {
            @Override
            public void onInitializationComplete(@NonNull InitializationStatus initializationStatus) {
            } });

        load.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                LoadAd();
            }});

        show.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                ShowAd();
            } });
    }


    private void LoadAd() {
        AdRequest adRequest = new AdRequest.Builder().build();
        InterstitialAd.load(
                this, AD_UNIT_ID, adRequest, new InterstitialAdLoadCallback() {
                    @Override
                    public void onAdLoaded(@NonNull InterstitialAd interstitialAd) {
                        MainActivity.this.interstitialAd = interstitialAd;
                        text.setText("Ad is ready! Click 'Show'");
                            } } );
                        }

    private void ShowAd()
    {
        if(interstitialAd!=null)
        {
            interstitialAd.show(MainActivity.this);
            interstitialAd = null;
            text.setText("Ad is shown. Click 'Load' to relaod Ad");
        }
        else {
            text.setText("Ad is not loaded. Click 'Load' first");
            } }
    }

Code snippet for activity_main.XML is: 

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:padding="10dp">
    <Button
        android:id="@+id/LoadAdBtn"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Load"
        android:textSize="20sp"/>
    <Button
        android:id="@+id/ShowAdBtn"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/LoadAdBtn"
        android:text="Show"
        android:textSize="20sp"/>
    <TextView
        android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/ShowAdBtn"
        android:layout_centerInParent="true"
        android:text="Click 'Load' to start"
        android:layout_marginTop="10dp"
        android:textSize="24sp"/>
</RelativeLayout>

Code snippet for Manifest (AndroidManifest.XML) is: 

(Because we need to add Internet 🌐 permission, and also MetaData)

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
    <uses-permission android:name="android.permission.INTERNET"/>
    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.AdmobInterstitial"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <meta-data
            android:name="com.google.android.gms.ads.APPLICATION_ID"
            android:value="Your App ID here"  />

    </application>

</manifest>

Build.Gradle (App Level): Add dependency: "com.google.android.gms:play-services-ads-lite:22.6.0".

dependencies {
    implementation("androidx.appcompat:appcompat:1.6.1")
    implementation("com.google.android.material:material:1.11.0")
    implementation("androidx.constraintlayout:constraintlayout:2.1.4")
    implementation("com.google.android.gms:play-services-ads-lite:22.6.0")
    testImplementation("junit:junit:4.13.2")
    androidTestImplementation("androidx.test.ext:junit:1.1.5")
    androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
}

Your App will look like this  👇👇👇👇👇

Once uploaded in the Play Store, you can use the actual Ad Unit ID and enjoy the real Ads. 

That' all folks. 👦 👨

Link to YouTube 

https://www.youtube.com/watch?v=zlnRM3oKYas

Thanks for reading. Subscribe to my YouTube

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