https://docs.expo.dev/
Normal simple project
# create project
mkdir rrrrrandomly
cd rrrrrandomly
npx create-expo-app@latest .
# start develop, then use expo go app to scan the QR code
npx expo start
# remove the boilerplate(app directory) to app-example and create an empty app directory
npm run reset-project
https://docs.expo.dev/tutorial/introduction/
Use third party libraries
If your project use some third-party libraries like “Realm”, you need a development environment, you can’t use Expo Go app to scan the QR code to run the app. Following the structure: https://docs.expo.dev/get-started/set-up-your-environment/?mode=development-build&buildEnv=local
I use macbook and an android phone, works fine.
android phone and macbook should be in the same network.
- connect android phone with USB line, you will see your device use this command:
adb devices - run the app:
npx expo run:android - then press
ato run the app on the android device. avoid using vpn on your phone, it may cause some problems.
some problems may occur when run npx expo run:android:
-
stuck at 0%, then download speed is too slow
check your nerwork, if you use vpn tools like clash, you should set http_proxy and https_proxy to active the proxy in the terminal.
-
npk version error
the version of npk in android/build.gradle should be same as that in android studio.
maybe you need to downoad old version ntk: https://github.com/android/ndk/wiki/Unsupported-Downloads
Debug
click j to open the developer tools, you can set breakpoint in source.
Name and Icon
if you changed the app name and icon, you need to rebuild the app to see the changes.
npx expo prebuild
npx expo run:android
build apk
npm install -g expo-cli
npm install -g eas-cli
eas build:configure
expo login
eas build --platform android
if you want to build abb file, you should set this in eas.json:
"production": {
"android": {
"buildType": "app-bundle"
}
}
and then run:
eas build --platform android --profile production