Javascript/reactnative/admob/expo

admobプラグインのインストール

$ expo install expo-ads-admob

app.json にandroidとiosを追加

{
  "android": {
    "config": {
      "googleMobileAdsAppId": "ca-app-pub-3940256099942544~3347511713" // sample id, replace with your own
    }
  },
  "ios": {
    "config": {
      "googleMobileAdsAppId": "ca-app-pub-3940256099942544~1458002511" // sample id, replace with your own
    }
  },
}

参考

https://honmushi.com/2019/11/28/expo-admob/