Add example AdMob integration to Expo app

with-admob/.gitignore

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+# Learn more https://docs.github.com/en/get-started/getting-started-with-git/ignoring-files
+
+# dependencies
+node_modules/
+
+# Expo
+.expo/
+dist/
+web-build/
+expo-env.d.ts
+
+# Native
+*.orig.*
+*.jks
+*.p8
+*.p12
+*.key
+*.mobileprovision
+
+# Metro
+.metro-health-check*
+
+# debug
+npm-debug.*
+yarn-debug.*
+yarn-error.*
+
+# macOS
+.DS_Store
+*.pem
+
+# local env files
+.env*.local
+
+# typescript
+*.tsbuildinfo
+
+ios/
+android/

with-admob/App.tsx

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+import { useEffect } from "react";
+import { StyleSheet, Text, View } from "react-native";
+import mobileAds from "react-native-google-mobile-ads";
+import { initializeMobileAds } from "./mobileAds";
+import { AdBanner } from "./components/AdBanner";
+
+export default function App() {
+  useEffect(() => {
+    (async () => {
+      await initializeMobileAds();
+    })();
+  }, []);
+
+  return (
+    <View style={styles.container}>
+      <Text>Open up App.tsx to start working on your app!</Text>
+      <AdBanner containerStyle={{ backgroundColor: "transparent" }} />
+    </View>
+  );
+}
+
+const styles = StyleSheet.create({
+  container: {
+    flex: 1,
+    backgroundColor: "#fff",
+    alignItems: "center",
+    justifyContent: "center",
+  },
+});

with-admob/README.md

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+# AdMob Example with Expo
+
+This example demonstrates how to integrate Google AdMob into an Expo React Native application. It shows how to display both banner and interstitial ads in your mobile app.
+
+## Prerequisites
+
+- Node.js (LTS version recommended)
+- Expo CLI
+- iOS Simulator (for iOS testing)
+- Android Emulator (for Android testing)
+- Google AdMob account
+
+## Installation
+
+1. Install the required dependencies:
+
+```sh
+# Install Google Mobile Ads SDK
+npm install react-native-google-mobile-ads
+
+```
+
+2. Configure your AdMob app ID in your app configuration.
+
+- Update `app.json` with your AdMob `iosAppId` and `androidAppId`
+
+## Running the Example
+
+To run the example on iOS:
+
+```sh
+npx expo run:ios
+```
+
+To run the example on Android:
+
+```sh
+npx expo run:android
+```
+
+## Features
+
+- Banner ads integration
+- Interstitial ads implementation
+- Ad unit configuration
+- Ad loading and display handling
+
+## Important Notes
+
+- Make sure to replace the example ad unit IDs with your own AdMob ad unit IDs
+- Test ads are used by default in development
+- Follow Google's AdMob policies and guidelines when implementing ads
+
+## Additional Resources
+
+- [Expo Documentation](https://docs.expo.dev)
+- [Google Mobile Ads SDK Documentation](https://developers.google.com/admob/react-native/quick-start)
+- [AdMob Policies](https://support.google.com/admob/answer/6128543)

with-admob/app.json

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+{
+  "name": "admob",
+  "slug": "admob",
+  "plugins": [
+    [
+      "react-native-google-mobile-ads",
+      {
+        "iosAppId": "ca-app-pub-xxxxxxxxxxxxxxxx~xxxxxxxxxx",
+        "androidAppId": "ca-app-pub-xxxxxxxxxxxxxxxx~xxxxxxxxxx"
+      }
+    ]
+  ],
+  "ios": {
+    "bundleIdentifier": "com.reinaldolejr.withadmob",
+    "infoPlist": {
+      "ITSAppUsesNonExemptEncryption": false,
+      "UIBackgroundModes": ["fetch", "remote-notification"]
+    },
+    "entitlements": {
+      "aps-environment": "development"
+    },
+    "jsEngine": "jsc"
+  }
+}

with-admob/components/AdBanner.tsx

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+import * as React from "react";
+import { View, Platform } from "react-native";
+import * as mobileAds from "react-native-google-mobile-ads";
+import {
+  BannerAd,
+  BannerAdSize,
+  TestIds,
+} from "react-native-google-mobile-ads";
+
+interface AdBannerProps {
+  containerStyle?: React.ComponentProps<typeof View>["style"];
+}
+
+const adUnitId = getAdUnitId("banner");
+
+/**
+ * Custom AdBanner component for displaying Google Mobile Ads banner
+ * This component provides a placeholder for banner ads
+ * Due to TypeScript errors with direct BannerAd use, we're using a wrapper component
+ */
+export function AdBanner({ containerStyle }: AdBannerProps) {
+
+  return (
+    <View
+      style={[
+        {
+          height: 60,
+          width: "100%",
+          alignItems: "center",
+          justifyContent: "center",
+          backgroundColor: "#f0f0f0",
+          marginVertical: 5,
+        },
+        containerStyle,
+      ]}
+    >
+      {/* Ad space - actual implementation via native code */}
+      <BannerAd
+        unitId={adUnitId}
+        size={BannerAdSize.BANNER}
+        requestOptions={{
+          networkExtras: {
+            collapsible: "bottom",
+          },
+        }}
+      />
+      {/* You can use this as a placeholder while rebuilding with native AdMob integration */}
+    </View>
+  );
+}
+
+export function getAdUnitId(adType: "banner" | "interstitial" | "rewarded") {
+    // Return test IDs
+    if (adType === "banner") return mobileAds.TestIds.BANNER;
+    if (adType === "interstitial") return mobileAds.TestIds.INTERSTITIAL;
+    if (adType === "rewarded") return mobileAds.TestIds.REWARDED;
+
+  // Fallback to test ID
+  return mobileAds.TestIds.BANNER;
+}

with-admob/mobileAds.ts

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+import { MobileAds, MaxAdContentRating } from 'react-native-google-mobile-ads';
+
+export const initializeMobileAds = async () => {
+  try {
+    await MobileAds().initialize();
+
+    // Configure ad content ratings
+    await MobileAds().setRequestConfiguration({
+      // Set your content rating
+      maxAdContentRating: MaxAdContentRating.PG,
+      // Specify if ads should be for children
+      tagForChildDirectedTreatment: false,
+      // Specify if ads should be for users under the age of consent
+      tagForUnderAgeOfConsent: false,
+      // Whether to request non-personalized ads
+      testDeviceIdentifiers: ['EMULATOR'],
+    });
+
+    console.log('Mobile Ads initialized successfully');
+  } catch (error) {
+    console.error('Failed to initialize Mobile Ads:', error);
+  }
+}; 

with-admob/package.json

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+{
+  "dependencies": {
+    "expo": "^53.0.4",
+    "hermes-engine": "^0.11.0",
+    "react": "19.0.0",
+    "react-dom": "19.0.0",
+    "react-native": "0.79.1",
+    "react-native-google-mobile-ads": "^15.2.0",
+    "react-native-web": "^0.20.0"
+  },
+  "devDependencies": {
+    "@babel/core": "^7.19.3",
+    "@types/react": "~19.0.10",
+    "@types/react-native": "~0.70.6",
+    "typescript": "~5.8.3"
+  },
+  "name": "with-admob",
+  "version": "1.0.0",
+  "private": true,
+  "scripts": {
+    "start": "expo start",
+    "android": "expo run:android",
+    "ios": "expo run:ios",
+    "web": "expo start --web"
+  },
+  "expo": {
+    "doctor": {
+      "reactNativeDirectoryCheck": {
+        "exclude": [
+          "eas-cli",
+          "hermes-engine"
+        ],
+        "listUnknownPackages": false
+      }
+    }
+  }
+}

with-admob/tsconfig.json

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+{
+  "compilerOptions": {},
+  "extends": "expo/tsconfig.base"
+}