High ram usage with admob

Question

I am trying to place ads inside my app. According to Admob Documentation I have to initialize Mobile Ads SDK

MobileAds.initialize(this, "YOUR_ADMOB_APP_ID");

This causes spike in high ram usage in code.

But if i remove this line then ram usage drops & and this line of code doesn't seem to have any affect on servering ads inside the app.

Also when requesting ad from admob ram usage again spike up and causes 3-4 GC events on app startup. I believe this is memory leak.

Here's how i am requesting ad in onCreate method

AdRequest request = null;
        if (BuildConfig.DEBUG) {
            //Facebook Audience Network
            List<String> testDeviceId = new ArrayList<>();
            testDeviceId.add("TESTID");//Redmi Note 3
            testDeviceId.add("TESTID");//Moto G 1st Gen

            AdSettings.addTestDevices(testDeviceId);

            //Google Ad-mob
            request = new AdRequest.Builder()
                    .addTestDevice("TESTID")//Redmi Note 3
                    .addTestDevice("TESTID")//Mot G 1st Gen
                    .build();
        } else {
            request = new AdRequest.Builder()
                    .build();
        }

        AdView mAdView = findViewById(R.id.adView);
        mAdView.loadAd(request);

When loading this banner ads several GC event are kicked in. If i don't load ads GC event are never kicked in.

Is this behavior normal with admob? How can i resolve this?

Answer 1

Google AdView has WebView with a lot of animation inside. It will heats up all mobile CPU. AdView take 30% of CPU.

Solution : You can also add custom listeners to destroy after some time and recreate in order to handle it even better. Serverside there is also a parameter telling the app ad how soon should ask for a new ad, I am not sure if it exist in all cases but it is there for DFP accounts.
here is the easiest way i would suggest

new Handler(new Handler.Callback() {
@Override
public boolean handleMessage(Message msg) {
  if (!isBeingDestroyed) {
      final AdRequest adRequest = new AdRequest();
      final AdView adView = (AdView) findViewById(R.id.ad);
      adView.loadAd(adRequest);
  }
}).sendEmptyMessageDelayed(0, 1000); 

Here is the link that provide complete solution for this.

Hope it will help you.