Metamask: WalletConnect Configuration with React Native App
In this article, we will explore how to set up a Metamask wallet in your React Native app using WalletConnect. We will focus on integrating it into your Expo or Xcode mobile app.
What is WalletConnect?
WalletConnect is an open source protocol that allows users to send and receive cryptocurrency without having to download wallets. It enables seamless interaction between dApps (decentralized applications) and wallet providers like Metamask in a secure and scalable manner.
Prerequisites
To use WalletConnect with Metamask, you will need:
- A Metamask wallet
- Expo or Xcode
- React Native CLI installed
1. Step 2: Set up WalletConnect configuration
Create a new file named « metamask.json » in your project directory:
{
"wallet": {
"id": "YOUR_METAMASK_ID",
"secretKey": "YOUR_METAMASK_SECRET_KEY"
}
}
Replace « YOUR_METAMASK_ID » and « YOUR_METAMASK_SECRET_KEY » with the actual ID and secret key of your Metamask wallet.
Step 2: Create a new React Native Expo project or Xcode app
If you are using Expo, run:
expo init metamask-wallet
`
Otherwise, create an Xcode project (or use the iOS equivalent) with the following settings:
- File -> New -> Project…
- Select « React Native » and select « App »
- Set the name of your app to « Metamask Wallet ».
3. Step 4: Configure Metamask in your React Native Expo app
Open the « metamask.json » file in your project directory and add the following code:
import {initialize} from 'metamask-wallet';
initialization ({
wallet ID: YOUR_METAMASK_ID,
secret key: YOUR_METAMASK_SECRET_KEY
});
Step 4: Integrate WalletConnect
Add the following code to your React Native Expo app to work with WalletConnect.
import { useWalletConnect } from '@metamask-connect/react-native';
const App = () => {
const { account, connection, error } = useWalletConnect({
ID: 'YOUR_METAMASK_ID',
secret key: YOUR_METAMASK_SECRET_KEY
});
if (error) {
console.error(error);
returns null;
}
// Processing wallet changes
const onAccountChange = async() => {
console.log('Wallet account changed');
};
return (
{account && (
Connected to metamask: {account}
)}
);
};
Step 5: Show QRCode modal (optional)
If you want to show QRCode modal when starting the app, add the following code:
import { useWalletConnect } from '@metamask-connect/react-native';
const App = () => {
const { account, connection, error } = useWalletConnect({
ID: 'YOUR_METAMASK_ID',
secret key: YOUR_METAMASK_SECRET_KEY
});
if (error) {
console.error(error);
return null;
}
// Show QRCode modal when app starts
const showModal = () => {
connect.request({ account });
};
return (
{account && (
Connected to Metamask: {account}
)}
connect.request({ account })) />
);
};
That’s it! You have now set up a Metamask wallet in your React Native Expo app using WalletConnect. When your app launches, a QRCode modal will be displayed, allowing users to add their wallet.
