JAVASCRIPT

ab mob react native expo

import Constants from 'expo-constants';

const testID = 'google-test-id';
const productionID = 'my-id';
// Is a real device and running in production.
const adUnitID = Constants.isDevice && !__DEV__ ? productionId : testID;

ab mob react native expo

 import { AdMobBanner,} from 'expo-ads-admob';

 <AdMobBanner
  bannerSize="banner"
  adUnitID="ca-app-pub-yourKeyHere" 
  servePersonalizedAds={false}
  onDidFailToReceiveAdWithError={this.bannerError} />