import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;

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.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 InterstitialAd mInterstitialAd;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        MobileAds.initialize(this, new OnInitializationCompleteListener() {
            @Override
            public void onInitializationComplete(InitializationStatus initializationStatus) {
            }
        });
        AdRequest adRequest = new AdRequest.Builder().build();

        InterstitialAd.load(this, "ca-app-pub-1474206512654633/xxxxxxxxxx", adRequest, new InterstitialAdLoadCallback() {
            @Override
            public void onAdLoaded(@NonNull InterstitialAd interstitialAd) {
                mInterstitialAd = interstitialAd;
                mInterstitialAd.setFullScreenContentCallback(new FullScreenContentCallback(){
                    @Override
                    public void onAdDismissedFullScreenContent() {
                    }

                    @Override
                    public void onAdFailedToShowFullScreenContent(AdError adError) {
                    }

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

            @Override
            public void onAdFailedToLoad(@NonNull LoadAdError loadAdError) {
                mInterstitialAd = null;
            }
        });
    }
    public void btn1 (View view){
        if (mInterstitialAd != null) {
        mInterstitialAd.show(MainActivity.this);
        }
        Intent btn = new Intent(this, Act1.class);
        startActivity(btn);
    }
    public void btn2(View view){
        if (mInterstitialAd != null) {
        mInterstitialAd.show(MainActivity.this);
        }
        Intent btn = new Intent(this, Act2.class);
        startActivity(btn);
    }
    public void btn3(View view){
        if (mInterstitialAd != null) {
        mInterstitialAd.show(MainActivity.this);
        }
        Intent btn = new Intent(this, Act3.class);
        startActivity(btn);
    }
    public void btn4(View view){
        if (mInterstitialAd != null) {
        mInterstitialAd.show(MainActivity.this);
        }
        Intent btn = new Intent(this, Act4.class);
        startActivity(btn);
    }
}