[🐛] Mediation adapters does not work with Expo config

[douglasndm]

What happened?

I have setup Mediation adapters as said on documentation but it looks like it not working on Expo 54

Ad Inspector says that adapter was not found and SDK is not ready.

I used the official Google Docs for this adapter for substitute the dependencies from example.

Here's what my plugins in app.config.ts looks like
[ 'expo-build-properties', { android: { dependencies: ['com.google.ads.mediation:vungle:7.5.1.0'], }, ios: { useFrameworks: 'static', deploymentTarget: '15.5', forceStaticLinking: ['RNFBApp'], extraPods: [ { name: 'GoogleMobileAdsMediationVungle', }, ], }, }, ],

I don't have any builds problems, but it still don't work, I when I open the native generated files from expo prebuild a noticed that dependencies were not injected

Platforms

Android and iOS

React Native Info

System:
  OS: macOS 26.0.1
  CPU: (8) arm64 Apple M1 Pro
  Memory: 143.94 MB / 16.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 22.20.0
    path: ~/.nvm/versions/node/v22.20.0/bin/node
  Yarn: Not Found
  npm:
    version: 11.6.2
    path: ~/.nvm/versions/node/v22.20.0/bin/npm
  Watchman:
    version: 2025.10.13.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.16.2
    path: /opt/homebrew/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 25.0
      - iOS 26.0
      - macOS 26.0
      - tvOS 26.0
      - visionOS 26.0
      - watchOS 26.0
  Android SDK:
    API Levels:
      - "29"
      - "31"
      - "33"
      - "34"
      - "35"
      - "36"
    Build Tools:
      - 29.0.2
      - 30.0.3
      - 33.0.0
      - 33.0.1
      - 34.0.0
      - 35.0.0
      - 35.0.0
      - 36.0.0
      - 36.0.0
    System Images:
      - android-33 | Google APIs ARM 64 v8a
      - android-33 | Google Play ARM 64 v8a
      - android-35 | Google Play ARM 64 v8a
    Android NDK: Not Found
IDEs:
  Android Studio: 2025.1 AI-251.27812.49.2514.14217341
  Xcode:
    version: 26.0.1/17A400
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.16
    path: /usr/bin/javac
  Ruby:
    version: 2.6.10
    path: /usr/bin/ruby
npmPackages:
  "@react-native-community/cli": Not Found
  react:
    installed: 19.1.0
    wanted: 19.1.0
  react-native:
    installed: 0.81.4
    wanted: 0.81.4
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: true
  newArchEnabled: true

Are your using Typescript?

• My project is using Typescript

package.json

{
	"name": "name",
	"private": true,
	"type": "module",
	"main": "src/main.tsx",
	"scripts": {
		"android": "expo run:android",
		"ios": "expo run:ios",
		"start": "watchman watch-del-all && npx expo start",
		"lint": "eslint .",
		"dead-code": "npx ts-prune ./src | grep -v 'used in module'",
		"build:android": "eas build --platform android --profile production --local",
		"build:ios": "eas build --platform ios --profile production --local"
	},
	"dependencies": {
		"@bwip-js/react-native": "^4.7.0",
		"@react-native-async-storage/async-storage": "^2.2.0",
		"@react-native-community/blur": "^4.4.1",
		"@react-native-community/hooks": "^100.1.0",
		"@react-native-community/netinfo": "^11.4.1",
		"@react-native-community/slider": "^5.0.1",
		"@react-native-firebase/analytics": "^23.3.1",
		"@react-native-firebase/app": "^23.3.1",
		"@react-native-firebase/app-check": "^23.3.1",
		"@react-native-firebase/auth": "^23.3.1",
		"@react-native-firebase/firestore": "^23.3.1",
		"@react-native-firebase/messaging": "^23.3.1",
		"@react-native-firebase/storage": "^23.3.1",
		"@react-native-masked-view/masked-view": "^0.3.2",
		"@react-native-picker/picker": "^2.11.1",
		"@react-navigation/elements": "^2.6.4",
		"@react-navigation/native": "^7.1.17",
		"@react-navigation/native-stack": "^7.3.26",
		"@react-navigation/stack": "^7.4.8",
		"@sentry/react-native": "^7.2.0",
		"axios": "^1.12.0",
		"date-fns": "^4.1.0",
		"eas-build-cache-provider": "^16.4.2",
		"expo": "^54.0.13",
		"expo-build-properties": "~1.0.9",
		"expo-clipboard": "~8.0.7",
		"expo-constants": "~18.0.9",
		"expo-dev-client": "~6.0.15",
		"expo-device": "~8.0.9",
		"expo-document-picker": "~14.0.7",
		"expo-file-system": "~19.0.17",
		"expo-glass-effect": "^0.1.4",
		"expo-image-manipulator": "~14.0.7",
		"expo-image-picker": "~17.0.8",
		"expo-localization": "~17.0.7",
		"expo-notifications": "~0.32.12",
		"expo-screen-orientation": "~9.0.7",
		"expo-splash-screen": "~31.0.10",
		"expo-updates": "~29.0.12",
		"lottie-react-native": "^7.3.3",
		"polished": "^4.3.1",
		"react": "19.1.0",
		"react-dom": "19.1.0",
		"react-native": "0.81.4",
		"react-native-check-version": "^1.4.0",
		"react-native-context-menu-view": "^1.19.0",
		"react-native-currency-input": "1.1.1",
		"react-native-device-info": "^14.0.4",
		"react-native-dialog": "^9.3.0",
		"react-native-drawer-layout": "^4.1.13",
		"react-native-flash-message": "^0.4.2",
		"react-native-gesture-handler": "2.28.0",
		"react-native-google-mobile-ads": "15.7.0",
		"react-native-html-to-pdf": "^1.3.0",
		"react-native-image-picker": "^8.2.1",
		"react-native-in-app-review": "^4.4.2",
		"react-native-keychain": "^10.0.0",
		"react-native-linear-gradient": "^2.8.3",
		"react-native-localization": "^2.3.2",
		"react-native-localize": "^3.5.2",
		"react-native-paper": "^5.14.5",
		"react-native-permissions": "5.4.2",
		"react-native-purchases": "9.2.2",
		"react-native-purchases-ui": "9.2.2",
		"react-native-reanimated": "^4.1.2",
		"react-native-safe-area-context": "^5.6.1",
		"react-native-screens": "4.16.0",
		"react-native-share": "^12.2.0",
		"react-native-ui-datepicker": "^3.1.2",
		"react-native-uuid": "^2.0.3",
		"react-native-vision-camera": "^4.7.2",
		"react-native-worklets": "^0.5.1",
		"react-native-zip-archive": "^7.0.2",
		"react-number-format": "^5.4.4",
		"realm": "^12.15.0",
		"styled-components": "^6.1.19",
		"xlsx": "^0.18.5",
		"xml-js": "^1.6.11",
		"yup": "^1.6.1"
	},
	"devDependencies": {
		"@react-native/eslint-config": "^0.81.1",
		"@tsconfig/react-native": "^3.0.0",
		"@types/react": "^19.1.12",
		"babel-plugin-module-resolver": "^4.1.0",
		"babel-plugin-react-compiler": "19.1.0-rc.2",
		"eslint": "^8.19.0",
		"eslint-config-prettier": "^6.11.0",
		"eslint-plugin-prettier": "^3.1.4",
		"eslint-plugin-react": "^7.37.5",
		"eslint-plugin-react-hooks": "^5.2.0",
		"prettier": "2.8.8",
		"react-native-typescript-transformer": "^1.2.10",
		"tsx": "^4.20.5",
		"typescript": "^5.9.2"
	},
	"engines": {
		"node": ">=20"
	},
	"pnpm": {
		"patchedDependencies": {
			"react-native-purchases-ui@9.2.2": "patches/react-native-purchases-ui@9.2.2.patch"
		}
	},
	"packageManager": "pnpm@10.18.3+sha512.bbd16e6d7286fd7e01f6b3c0b3c932cda2965c06a908328f74663f10a9aea51f1129eea615134bf992831b009eabe167ecb7008b597f40ff9bc75946aadfb08d"
}

app.json

plugins: [
...
[
		'expo-build-properties',
		{
			android: {
				dependencies: ['com.google.ads.mediation:vungle:7.5.1.0'],
			},
			ios: {
				useFrameworks: 'static',
				deploymentTarget: '15.5',
				forceStaticLinking: ['RNFBApp'],
				extraPods: [
					{
						name: 'GoogleMobileAdsMediationVungle',
					},
				],
			},
		},
	],
]

ios/Podfile

android/build.gradle

android/app/build.gradle

android/settings.gradle

AndroidManifest.xml

[mikehardy]

It may be that the Expo plugin does not do whatever is needed for mediation adapters. The plugins are needed and useful but they are not magic. They programmatically apply whatever native file changes are needed before you build, in the pre build step

Your task is to investigate what the mediation adapter docs for each platform say about the native file changes needed, do an expo prebuild to run the plugin here and render the native files, then carefully investigate those files to see if they have all the changes the mediation adapter docs require

If there are any gaps between what the expo config plugin here does and what changes are needed, apply those manually until you get it working so you know exactly what works, then alter the config plugin to make those changes programmatically during pre-build, then post that as a PR here. We'll merge that then it'll work forever

[github-actions]

Hello 👋, to help manage issues we automatically close stale issues.

This issue has been automatically marked as stale because it has not had activity for quite some time.Has this issue been fixed, or does it still require attention?

This issue will be closed in 15 days if no further activity occurs.

Thank you for your contributions.

[buraks]

I think the issue is that the documentation on this page (https://docs.page/invertase/react-native-google-mobile-ads/mediation) is very misleading.

expo-build-properties never claimed to support adding extra sdks to Android in the way the documentation claims.

@dylancom I see that you have modified the doc page, could you advise us on this? Did you somehow get this work? If so what else should we be doing?

[dylancom]

@buraks this was actually written by @malandr2, see #786.
Maybe he can help.

[github-actions]

Hello 👋, to help manage issues we automatically close stale issues.

This issue has been automatically marked as stale because it has not had activity for quite some time.Has this issue been fixed, or does it still require attention?

This issue will be closed in 15 days if no further activity occurs.

Thank you for your contributions.