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

How to Pair Your App with CoolWallet Pro?

If you want to support connecting CoolWallet Pro for transaction signing within your App, the minimal technical requirement is to use the Pairing Password feature to pair your App with the card. Once paired, you can send transaction data to CoolWallet Pro.

CoolWallet Pro can pair with up to 3 Apps. You can see the paired devices in the CoolWallet App under Card Settings > Device List. The first parameter of RNApduManager.registerDevice, name, represents the registered name, which will be displayed in the Device List. The name can have up to 30 characters; it is recommended to use your App's name for this field.

If CoolWallet Pro has already paired with 3 devices, you cannot pair a new device until you remove an existing one from Card Settings > Device List. On iOS, swipe left on the device to delete; on Android, long press to delete.

You can refer to this video for instructions on generating the Pairing Password using the CoolWallet App.

You can find the code for connecting to the card in the file src/features/cardPairing/RegisterCardContainer.tsx.

Getting Started

Last testing was conducted in the following environment:

❯ node -v
v18.16.0
❯ yarn -v
1.22.19
❯ npm -v
9.6.7

Note: Make sure you have completed the React Native - Environment Setup instructions till "Creating a new application" step, before proceeding.

Step 1: Start the Metro Server

First, you will need to start Metro, the JavaScript bundler that ships with React Native.

To start Metro, run the following command from the root of your React Native project:

yarn start

Step 2: Start your Application

Let Metro Bundler run in its own terminal. Open a new terminal from the root of your React Native project. Run the following command to start your Android or iOS app:

For Android

yarn android

For iOS

yarn ios

If everything is set up correctly, you should see your new app running in your Android Emulator or iOS Simulator shortly provided you have set up your emulator/simulator correctly.

This is one way to run your app — you can also run it directly from within Android Studio and Xcode respectively.

Step 3: Modifying your App

Now that you have successfully run the app, let's modify it.

1. Open App.tsx in your text editor of choice and edit some lines.

2. For Android: Press the R key twice or select "Reload" from the Developer Menu (Ctrl + M (on Window and Linux) or Cmd ⌘ + M (on macOS)) to see your changes!

   For iOS: Hit Cmd ⌘ + R in your iOS Simulator to reload the app and see your changes!

Congratulations! 🎉

You've successfully run and modified your React Native App. 🥳

Now what?

• If you want to add this new React Native code to an existing application, check out the Integration guide.
• If you're curious to learn more about React Native, check out the Introduction to React Native.

Troubleshooting

If you can't get this to work, see the Troubleshooting page.

Learn More

To learn more about React Native, take a look at the following resources:

• React Native Website - learn more about React Native.
• Getting Started - an overview of React Native and how setup your environment.
• Learn the Basics - a guided tour of the React Native basics.
• Blog - read the latest official React Native Blog posts.
• @facebook/react-native - the Open Source; GitHub repository for React Native.