Expo App Template

Scripts

• npm i - Install NodeJS deps
• npx expo prebuild --platform android - Sync Android directory w/ Expo prebuild steps
• npm run android - Launch app on running AVD or connected device

First time run on AVD

Open Android Studio > Open project > select "android" directory from this repo. Gradle sync will run on open and will take some time (12 minutes on i7 @ 3.0 GHz)

First, set JAVA_HOME environment variable

1. (New UI) Android Studio > File > Settings > Build, Execution, Deployment > Build Tools > Gradle
2. Click the "Gradle JDK" dropdown, select "Download JDK", select version 21, copy "Location" field, click "Download" button; after download completes, click "Apply" button, then "OK"
3. Set system environment variable JAVA_HOME to value copied from above - BE SURE to include the trailing slash (\ or /)
4. Reopen Android Studio (to let new env vars take effect)

Second, create and run an AVD

Tested on Medium Phone API 30 (Android 11.0, "R")

Third, launch app

With an AVD already open and running, execute npm run android in the root of this repo to launch the app on the AVD (first run will take some time, subsequent runs will be much faster; 5.5 minutes on i7 @ 3.0 GHz, 30 secs after)

Misc

Install ADB (CLI tool)

Follow the directions here to download SDK files

• Windows - Set Android environment variable as described, then add %Android% to path environment variable