Ocada: mobile app

Development environment set-up

Find the docs at /docs/dev-env-setup.md.

Install pre-requisites

npx yarn install
npx yarn global add eas-cli

Develop & run

Launch Expo:

npx expo start --dev-client

or npx expo start for Expo Go client.

MacOS: to run it on Android, use an Android device with Expo Go installed, or launch an AVD from Android Studio. iOS simulator will launch on demand.

Windows: to run a iOS simulation, you need access to an iOS device with Expo Go installed.

If something isn't working, or you've installed a lot of new dependencies, clear cache and launch Expo:

npx expo start -c

Dependencies

We use Yarn

Why do we need package X

• expo-dev-client: used for development and testing; allows for creating a 'dev build' installed in parallel with the main app on your phone
• react-native-graph and react-native-linear-gradient: used for chart functionality
• @react-native-firebase/app, expo-build-properties (required to use useFramework): analytics, push notifications
• react-native-reanimated, react-native-gesture-handler are peer dependencies for react-native-ui-lib

Update dependencies

Check outdated dependencies:

npx yarn outdated

Updating Expo SDK

Generally the process to update the Expo SDK well documented in Expo blog.

Common issues

Invariant violation

Error message:

Invariant violation: Tried to register two views with the same name...

Can often be resolved by running npx expo upgrade. It's best to run it along with npx yarn upgrade.

Dependencies ref

• tweetnacl and bs58 are used for connecting phantom