How To Show Interstitial Ads in Every 20 Seconds in Android Studio Java:

In this blog we describe How to Repeat Fullscreen Ads in android studio java and How To Show Interstitial Ads in Every 20 Seconds in android studio java.

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Step 1 : Add Internet Permission and Admob Metadata

Copy this code and paste into your manifest.xml

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

<!-- 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 : Implement Admob Library

Copy this code and paste into your build.gradle(Module:app)

// Admob Ads Library
implementation 'com.google.android.gms:play-services-ads:23.1.0'

Step 3 : Initialize Admob

Copy this code and paste into your MainActivity.java in onCreate method

// Admob Initialize
new Thread(
        () -> {
            // Initialize the Google Mobile Ads SDK on a background thread.
            MobileAds.initialize(this, initializationStatus -> {});
        })
        .start();

Step 4 : Fullscreen Ads Java Code

Copy this code and paste this code into your MainActivity.java above onCreate method

// Step 1 - Implement FullScreen/Interstitial Ads
InterstitialAd mInterstitialAd;

Copy this code and paste this code into your MainActivity.java bellow onCreate method

// Step 2 - Implement FullScreen/Interstitial Ads ======================================== START
private void loadFullscreenAd() {

    AdRequest adRequest = new AdRequest.Builder().build();

    InterstitialAd.load(this, "ca-app-pub-3940256099942544/1033173712", adRequest,
            new InterstitialAdLoadCallback() {
                @Override
                public void onAdLoaded(@NonNull InterstitialAd interstitialAd) {
                    mInterstitialAd = interstitialAd;

                    mInterstitialAd.setFullScreenContentCallback(new FullScreenContentCallback(){
                        @Override
                        public void onAdClicked() {

                        }

                        @Override
                        public void onAdDismissedFullScreenContent() {
                            mInterstitialAd = null;
                            loadFullscreenAd();
                        }

                        @Override
                        public void onAdFailedToShowFullScreenContent(AdError adError) {
                            mInterstitialAd = null;
                        }

                        @Override
                        public void onAdImpression() {
                        }

                        @Override
                        public void onAdShowedFullScreenContent() {

                        }
                    });

                }

                @Override
                public void onAdFailedToLoad(@NonNull LoadAdError loadAdError) {
                    super.onAdFailedToLoad(loadAdError);
                }

            });

}
// Step 2 - Implement FullScreen/Interstitial Ads ========================================== END

Copy this code and paste this code into your MainActivity.java in onCreate method

// Call method
loadFullscreenAd();

Step 5 : Repeat Fullscreen ads Java Code

Copy this code and paste into your MainActivity.java above onCreate method

// Step 1 - Repeat FullScreen/Interstitial Ads
Handler handler = new Handler(Looper.getMainLooper());

Copy this code and paste into your MainActivity.java bellow onCreate method

// Step 2 - Repeat FullScreen/Interstitial Ads  ========================================== START
Runnable runnable = new Runnable() {
    @Override
    public void run() {
        if (mInterstitialAd != null) {
            mInterstitialAd.show(MainActivity.this);
        }
        handler.postDelayed(runnable, 20000);
    }
};
// Step 2 - Repeat FullScreen/Interstitial Ads ============================================= END

Copy this code and paste into your MainActivity.java in onCreate method

// Step 3 - Repeat FullScreen/Interstitial Ads
runnable.run();

Copy this code and paste into your MainActivity.java bellow onCreate method

// Step 4 - Repeat FullScreen/Interstitial Ads
@Override
public void onBackPressed() {
    handler.removeCallbacks(runnable);
    super.onBackPressed();
}

Full Java Code 

package com.example.admobads;

import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.util.Log;

import androidx.activity.EdgeToEdge;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;

import com.google.android.gms.ads.AdError;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.FullScreenContentCallback;
import com.google.android.gms.ads.LoadAdError;
import com.google.android.gms.ads.MobileAds;
import com.google.android.gms.ads.interstitial.InterstitialAd;
import com.google.android.gms.ads.interstitial.InterstitialAdLoadCallback;
import com.google.android.gms.ads.rewarded.RewardedAd;
import com.google.android.gms.ads.rewardedinterstitial.RewardedInterstitialAd;
import com.google.android.gms.ads.rewardedinterstitial.RewardedInterstitialAdLoadCallback;

public class MainActivity extends AppCompatActivity {

    InterstitialAd mInterstitialAd;
    Handler handler = new Handler(Looper.getMainLooper());
   RewardedAd rewardedAd;
    private final String TAG = "MainActivity";
   RewardedInterstitialAd rewardedInterstitialAd;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        EdgeToEdge.enable(this);
        // Admob Initialize
        new Thread(
                () -> {
                    // Initialize the Google Mobile Ads SDK on a background thread.
                    MobileAds.initialize(this, initializationStatus -> {});
                })
                .start();
        // Call method
        loadFullscreenAd();
        // Step 3 - Repeat FullScreen/Interstitial Ads
        runnable.run();

        setContentView(R.layout.activity_main);
        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
            return insets;


        });



    }

   // Implement FullScreen/Interstitial Ads ======================================== START
    private void loadFullscreenAd() {

        AdRequest adRequest = new AdRequest.Builder().build();

        InterstitialAd.load(this, "ca-app-pub-3940256099942544/1033173712", adRequest,
                new InterstitialAdLoadCallback() {
                    @Override
                    public void onAdLoaded(@NonNull InterstitialAd interstitialAd) {
                        mInterstitialAd = interstitialAd;

                        mInterstitialAd.setFullScreenContentCallback(new FullScreenContentCallback(){
                            @Override
                            public void onAdClicked() {

                            }

                            @Override
                            public void onAdDismissedFullScreenContent() {
                                mInterstitialAd = null;
                                loadFullscreenAd();
                            }

                            @Override
                            public void onAdFailedToShowFullScreenContent(AdError adError) {
                                mInterstitialAd = null;
                            }

                            @Override
                            public void onAdImpression() {
                            }

                            @Override
                            public void onAdShowedFullScreenContent() {

                            }
                        });

                    }

                    @Override
                    public void onAdFailedToLoad(@NonNull LoadAdError loadAdError) {
                        super.onAdFailedToLoad(loadAdError);
                    }

                });

    }
// Step 2 - Implement FullScreen/Interstitial Ads ========================================== END
// Step 2 - Repeat FullScreen/Interstitial Ads  ========================================== START
Runnable runnable = new Runnable() {
    @Override
    public void run() {
        if (mInterstitialAd != null) {
            mInterstitialAd.show(MainActivity.this);
        }
        handler.postDelayed(runnable, 50000);
    }
};
// Step  2 - Repeat FullScreen/Interstitial Ads ============================================= END

    // Step 4 - Repeat FullScreen/Interstitial Ads
    @Override
    public void onBackPressed() {
        handler.removeCallbacks(runnable);
        super.onBackPressed();


}
}