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

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

Connecting MetaMask Mobile App to React Native Dapp Using DeepLinks

As a React Native app developer, you are probably familiar with the importance of providing a seamless user experience across all platforms. One such feature is connecting your app directly to external wallets like MetaMask, similar to OpenSea. In this article, we will explore how to achieve this using the Metamask library and deep links.

Why deep links?

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

Step 1: Install the Metamask library

First, install the Metamask library using npm:

npm install Metamask

This will add the Metamask package to your project’s dependencies.

Step 2: Initialize MetaMask in your app

In your app’s directory, create a new file called “metaMask.js”. This file contains the initialization logic for MetaMask.

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’s directory. This file will handle the deep link 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 (
);
};
export default connection;

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

Step 4: Use Deep Links in Your App

To use Deep Links to connect to your app, you need to create a new file called ‘App.js’. This file defines the route for connecting 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’ll create a “Link” component that points to the “/connect” route. When the user clicks on this link, they’ll be taken directly to the Metamask app.

Putting it all together

Here’s an updated version of your app’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’ll use the MetaMaskConnect component from our own MetaMask.js file. This component handles the deep link logic and connects to MetaMask when the user clicks 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.

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