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This is a new React Native project, bootstrapped using @react-native-community/cli.

Getting Started

Note: Make sure you have completed the React Native - Environment Setup instructions till "Creating a new application" step, before proceeding. For Android, make sure you have Java 17 installed and the JAVA_HOME environment variable is set.

NodeJS and Ruby

To run the project you need to install the correct version of NodeJS and Ruby. We recommend the use of a virtual environment of your choice. For ease of use, this guide uses nodenv for NodeJS, rbenv for Ruby.

The node version used in this project is stored in .node-version, while the version of Ruby is stored in .ruby-version.

Build the app

# Install NodeJS with nodenv, the returned version should match the one in the .node-version file
$ nodenv install && nodenv version

# Install Ruby with rbenv, the returned version should match the one in the .ruby-version file
$ rbenv install && rbenv version

# Install yarn and rehash to install shims
$ npm install -g yarn && nodenv rehash

# Install bundle
$ gem install bundle

# Install the required Gems from the Gemfile
# Run this only during the first setup and when Gems dependencies change
$ bundle install

# Install dependencies
# Run this only during the first setup and when JS dependencies change
$ yarn install

# Install podfiles when targeting iOS (ignore this step for Android)
# Run this only during the first setup and when Pods dependencies change
$ cd ios && bundle exec pod install && cd ..

Environment variables

In order to run the app, you need to create a .env file by copying the .env.local file and updating its values.

$ cp .env.local .env

For the Google Play Integrity API calls, you need to update the GOOGLE_CLOUD_PROJECT_NUMBER value. This requires a Google Cloud project with the Play Integrity API enabled. Follow the official documentation provided by Google here.

Important

When changing the .env file, make sure to clear the Metro bundler cache by running yarn start --reset-cache.

Local server

If you want to verify the tokens and attestations generate by the example app you can use the provided local server. By default, the .env.local file is configured to use it but you can customize the BACKEND_ADDRESS value to use a different server. More information about the local server setup can be found in its README.

Run the app

# Android
$ yarn android
# If you want to use the local server, you need to reverse the 3000 port
$ adb reverse tcp:3000 tcp:3000

# iOS
$ yarn ios