Metamask: Connect MetaMask mobile app to React Native Dapp with DeepLinks

Connecting MetaMask Mobile App to React Native Dapp with DeepLink

As a React Native app developer, you probably know the importance of a seamless user experience across platforms. One such feature is connecting your app directly to an external wallet like MetaMask, similar to OpenSea. In this article, we’ll look at how to achieve this using the Metamask library and deeplinks.

Why deeplinks?

Deeplinks are a powerful feature of React Native that allow you to open an app or website by clicking on a link in your app’s URL. This can be especially useful when connecting external wallets like MetaMask, as it provides a clean and native experience for your users.

Step 1: Install the Metamask Library

To get started, install the Metamask library using npm:

npm install metamask

Create a new file calledmetaMask.jsin your app directory. This file will contain the MetaMask initialization logic.

import { MetaMask } from '@metamask-connect/extension';
const metaMask = new MetaMask({
id: 'YOURMetaMask_ID', // Replace with your MetaMask ID
});
export default metaMask;

Replace YOURMetaMask_ID’ with the actual ID of your MetaMask wallet.

Step 3: Use deep links to connect to MetaMask

Create a new file called Connect.js in your app directory. This file will handle the deep linking logic.

import React, { useState } from 'react';
import { Provider } from: '@metamask-connect/extension';
const Connect = () => {
const [connected, setConnected] = useState(false);
const onConnect = async (wallet) => {
if (!wallet) return;
metaMask.on('connect', () => {
setConnected(true);
});
metaMask.on('disconnect', () => {
setConnected(false);
});
};
return (
);
};
default export Connection;

In this example, we use Metamask’s Provider component to connect to MetaMask. We define a connected state variable and an onConnect event handler. When the user clicks on the link to connect to MetaMask, the “onConnect” function is called, which sets the “connected” value to true if the wallet connection was successful.

Step 4: Using deep links in your app

If you want to use deep links to connect to your app, you need to create a new file called “App.js”. This file defines the path to connect to MetaMask.

import React from 'react';
import { Link } from 'react-router-dom';
import Connect from './Connect';
const App = () => {
return (
Connect to MetaMask
);
};
export default app;

In this example, we create a “Link” component that points to the “/connect” path. When the user clicks on this link, they will be taken directly to the Metamask application.

Putting it all together

Here is an updated version of the application’s “App.js” file:

import React from 'react';
import { Link } from 'react-router-dom';
import MetaMaskConnect from './MetaMaskConnect';
const App = () => {
return (
Connect to MetaMask
);
};
export default app;

In this example, we are using the MetaMaskConnect component from our own MetaMask.js file. This component handles the deep linking logic and connects to MetaMask when the user clicks on the link.

Conclusion

Connecting your React Native app directly to external wallets like MetaMask is a powerful feature that provides a seamless experience for users.

ethereum timestamps cant blockchain