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Title: Unable to execute Smart Contract (BUSD) method on Android Chrome using Web3.js and WalletConnect
Introduction
As a web developer, I have encountered several challenges when building decentralized applications (dApps) that rely on blockchain technology. A common issue is executing smart contract methods using Web3.js and WalletConnect on mobile devices like Android Chrome. In this article, we will explore the reasons for this limitation and provide a workaround to get our BUSD (Binance Smart Chain) transfer method working on Android Chrome.
Why smart contract methods fail to execute?
There are several reasons why smart contract methods may not work as expected when using Web3.js and WalletConnect on Android Chrome:
- Web3.js library compatibility: The Web3.js library is designed to work seamlessly with the Ethereum blockchain, which is a different network than Binance Smart Chain (BSC). As a result, some of the features available in Web3.js may not be compatible or functional on BSC.
- WalletConnect integration: WalletConnect is an open-source protocol that allows users to connect their wallets to dApps. However, its integration with Web3.js can be complex, especially when dealing with different blockchain networks.
Workaround: Using Localhost Wallet and Web3.js
To make our BUSD transfer method work on Android Chrome, we will use a combination of the following tools:
- Localhost Wallet: We will create a local wallet that mimics the behavior of a Binance Smart Chain wallet. This will allow us to interact with the BSC blockchain from the browser.
- Web3.js: We will use Web3.js to interact with the localhost wallet and execute smart contract methods.
Step-by-step guide
Here is a step-by-step guide to make our BUSD transfer method work on Android Chrome:
- Create a local wallet: Create a local BSC wallet that supports the “ethernaut” chain (the Ethereum equivalent of Binance Smart Chain). You can find pre-built wallets online or use a tool like MetaMask to create one.
- Install Web3.js: Install Web3.js on your localhost using npm:
npm install web3.
- Create a new JavaScript file: Create a new file (e.g.
bssc-transfer.js) and import the necessary libraries:import Web3 from 'web3'; import WalletConnect from 'walletconnect';
- Configure local wallet connection: Replace the following placeholders with the actual URL of your local wallet:
const w3 = new Web3(new Web3.providers.HttpProvider('
- Create smart contract methods: Create a new JavaScript file (e.g.
bssc-transfer.js) and define the smart contract methods you want to execute.
- Use WalletConnect: Use the
WalletConnectinstance to connect your local wallet and trigger the smart contract method.
Sample Code
Here is a sample code snippet to get you started:
“`javascript
const w3 = new Web3(new Web3.providers.HttpProvider(‘
// Set up the local wallet connection
const walletUrl = ‘
const walletPrivateKey = ‘your-wallet-private-key’;
// Create smart contract methods
async function transferBusd(amount) {
wait w3.eth.sendTransaction({
from: process.env.ACCOUNT,
to: ‘0x…YourRecipientAddress’,
value: amount * 10 // 100 BUSD per transaction
});
}
// Use the WalletConnect instance to trigger the smart contract method
const wallet = new WalletConnect({
providerUrl: walletUrl,
chainId: 42, // BSC Mainnet
accounts: [‘…YourWalletAddress’]
});
wallet.on(‘connect’, (chain) => {
console.
