Admob in fragments

Question

I created an empty project with appcompact and tried to add to it the AdMob block

fragment_main.xml

Answer 1

THIS IS THE ANSWER ... you will write root before the findViewById. That's all

    AdView mAdView = (AdView) root.findViewById(R.id.adView);
    AdRequest adRequest = new AdRequest.Builder().build();
    mAdView.loadAd(adRequest);