In my React Native app, I'm trying to add the expo-mail-composer package using this guide.
I use [email protected],
I added "install-expo-modules": "^0.2.8",
then "expo-mail-composer": "~11.3.0",
When I try to import the package with
import * as MailComposer from 'expo-mail-composer'
it throws the error
Cannot find native module 'ExpoMailComposer'
This issue was resolved for me by creating a new development build:
eas build --profile development --platform android
Then downloading and installing that build on my device:
adb install --user 0 <path_to_apk>
I then ran the app with:
set APP_ENV=development&& npx expo start --dev-client
The app opened as normal after that, and MailComposer.composeAsync() appears to work.
(For reference, I'm developing on a physical Android device using the Managed workflow, and did not have to use npx install-expo-modules@latest.)
To use expo modules in a non-expo project (aka bare workflow), you need to install Expo modules first with:
npx install-expo-modules@latest
Building again instead of reload worked for me
npm run build or pnpm android
I was getting the issue with a missing ExpoLinking module when I tried to run the app on my android device using npx expo start. I had previously built the app with older dependencies using npx expo run:android, and tapping on the app would result with the error.
The steps for me to fix this were:
package.json -> expo-linkingnpx expo run:android - This added a new iconfor the app and things worked correctly.If after rebuilding the app doesn't work you need to create a new development build in expo.
eas build --profile=development
