One Interstitial ad through whole App

Question

I have an activity with around four fragments and these fragments has child fragments. I have a static counter with static InterstitialAd in The Mainactivity that is called through fragments, however it leads to memory leak. Is there a better practise?

Inside main

static int clicksCount,newsCount;
private static InterstitialAd mInterstitialAd;

public static void interstitalAd() {
    clicksCount++;
    if (clicksCount % 3 == 0) {
        if (mInterstitialAd.isLoaded()) {
            mInterstitialAd.show();
        }
    }
}

And whenever I need to call it from fragments

MainActivity.interstitalAd();

Answer 1

It's probably not necessary or wise to story the InterstitialAd itself as a static member, since it will then retain the context it was created with indefinitely.

Better to do:

static int clicksCount,newsCount;
private InterstitialAd mInterstitialAd;

public void interstitalAd() {
    clicksCount++;
    if (clicksCount % 3 == 0) {
        if (mInterstitialAd.isLoaded()) {
            mInterstitialAd.show();
        }
    }
}

And then in your Fragment:

MainActivity mainActivity = (MainActivity)getActivity();
mainActivity.interstitialAd();