Solving the Frustrating Issue of React-Native-Google-Mobile-Ads Giving Errors on Expo IOS Build

Are you tired of seeing errors pop up when trying to integrate Google Mobile Ads into your Expo iOS app using react-native-google-mobile-ads? You’re not alone! Many developers have struggled with this issue, but fear not, dear reader, for we’re about to dive into a step-by-step guide to resolve this problem once and for all.

Understanding the Problem

React-native-google-mobile-ads is a popular library for displaying Google AdMob ads in React Native apps. However, when building an Expo iOS app, you might encounter errors such as:

Error: Cannot find module 'react-native-google-mobile-ads' from 'node_modules/expo-ads-admob/ios/EXAdsAdMob.m'

or

Failed to install 'react-native-google-mobile-ads': undefined

These errors can be perplexing, especially if you’ve followed the official documentation to the letter. But don’t worry, we’ll get to the bottom of this!

Prerequisites

Before we begin, make sure you have:

• Expo CLI installed and set up on your machine
• A React Native project created using Expo
• React-native-google-mobile-ads installed using npm or yarn
• Google AdMob account with a registered app ID and ad unit IDs

Step 1: Update Your Expo Project

First, ensure your Expo project is up-to-date by running the following command:

expo update

This command will fetch the latest Expo SDK and update your project accordingly.

Step 2: Link the Library

Next, link the react-native-google-mobile-ads library to your project using the following command:

npx react-native link react-native-google-mobile-ads

This command will link the library to your project, allowing you to use its functionality.

Step 3: Configure iOS

Now, let’s configure the iOS side of things. Open your Podfile (located in the ios directory) and add the following lines:

pod 'Google-Mobile-Ads-SDK', '~> 8.0'

Then, run the following command to install the pod:

cd ios && pod install

This will install the Google Mobile Ads SDK for iOS.

Step 4: Add AdMob SDK to Info.plist

In your Info.plist file (located in the ios directory), add the following lines:

<key>GADApplicationIdentifier</key>
<string>YOUR_AD_APP_ID</string>

<key>GADIsAdManagerApp</key>
<true/>

Replace YOUR_AD_APP_ID with your actual AdMob app ID.

Step 5: Initialize AdMob

In your AppDelegate.m file (located in the ios directory), add the following code:

#import <GoogleMobileAds/GoogleMobileAds.h>

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
  // Initialize Google Mobile Ads
  [[GADMobileAds sharedInstance] startCompletingSelection];
  return YES;
}

This code initializes the AdMob SDK and prepares it for use.

Step 6: Use react-native-google-mobile-ads in Your App

Finally, import and use the react-native-google-mobile-ads library in your React Native app:

import { View, Text } from 'react-native';
import { BannerAd, BannerAdSize } from 'react-native-google-mobile-ads';

const App = () => {
  return (
    <View>
      <BannerAd
        unitId="YOUR_AD_UNIT_ID"
        size={BannerAdSize.SMART_BANNER_PORTAIT}
        requestOptions={{
          requestNonPersonalizedAdsOnly: true,
        }}
      >
        <Text>Ad</Text>
      </BannerAd>
    </View>
  );
};

Replace YOUR_AD_UNIT_ID with your actual AdMob ad unit ID.

Troubleshooting Common Issues

If you encounter any issues during the process, here are some common solutions:

Issue	Solution
Error: Cannot find module ‘react-native-google-mobile-ads’	Try reinstalling the library using npm or yarn, and then re-link it to your project.
Error: Failed to install ‘react-native-google-mobile-ads’	Check that you have the correct version of Expo installed, and try reinstalling the library using npm or yarn.
AdMob ads not displaying	Ensure that you have correctly configured your AdMob app ID and ad unit IDs, and that you have initialized the AdMob SDK in your AppDelegate.m file.

Conclusion

With these steps, you should now be able to successfully integrate Google Mobile Ads into your Expo iOS app using react-native-google-mobile-ads. Remember to stay patient and persistent, and don’t hesitate to reach out if you encounter any further issues.

Happy coding, and may your app be filled with lucrative ads!

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Frequently Asked Questions

Having trouble with “react-native-google-mobile-ads” on Expo iOS build? Don’t worry, we’ve got you covered! Check out these frequently asked questions to get your ads up and running in no time!