How to load AdMob Interstitial ad only one activity?

Question

Right now I am working on one app which is include Interstitial ad but I am facing one problem that is I want to show ad in only MainActivity after every 2 min and when I move on next activity it will be stop. for this implementation I do something like this,

prepareAd();
    ScheduledExecutorService scheduler =
            Executors.newSingleThreadScheduledExecutor();
    scheduler.scheduleAtFixedRate(new Runnable() {

        public void run() {
            Log.i("hello", "world");
            runOnUiThread(new Runnable() {
                public void run() {
                    if (mInterstitialAd.isLoaded()) {
                        mInterstitialAd.show();
                    }
                    prepareAd();
                }
            });
        }
    }, 1, 120, TimeUnit.SECONDS);

public void  prepareAd(){
    mInterstitialAd = new InterstitialAd(this);
    mInterstitialAd.setAdUnitId("ca-app-pub-xxxxxxxxxxxxxxxxx/xxxxxxxxxx");
    mInterstitialAd.loadAd(new AdRequest.Builder().build());
}

Answer 1

First create a global reference:

boolean isActivityIsVisible = true;

Then check this by overriding activity's life cycle:

@Override
  protected void onPause() {
  super.onPause();
  isActivityIsVisible = false;
}

@Override
  protected void onResume() {
  super.onResume();
  isActivityIsVisible = true;
}

@Override
  protected void onStop() {
  super.onStop();
  isActivityIsVisible = false;
}

Check whether Activity is visible in interstitial ads call back, If visible show it.

mInterstitialAd.setAdListener(new AdListener() {
    @Override
    public void onAdClosed() {
        prepareAd();
    }
    public void onAdLoaded(){
        if (isActivityIsVisible) { mInterstitialAd.show(); }
    }
});

Hope it helps.