Metamask: Not able to transfer my ETH from the Smart Contract to an User Account while using Truffle or ReactJS with Web3

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Metamask issues: Unable to transfer ETH from smart contract to user account using Truffle and ReactJS

I recently ran into a problem trying to transfer Ethereum (ETH) from a smart contract to a user account using Truffle and ReactJS. The problem is how Metamask processes transactions between the smart contract and the user’s wallet.

Problem:

In my Solidity code, I’m asking to use the TransferETH' function provided by Truffle to transfer ETH from an Ethereum address stored in a smart contract store to a user account. However, when trying to perform this transaction using ReactJS, Metamask encounters problems and cannot complete the transfer.

To solve this problem, we need to useeth_sendTransactionfunction from Truffle instead ofTransferETH. The latter option has been deprecated in favor ofeth_sendTransaction, which provides more control over the flow of transactions. Here's an updated version of my Solidity code that uses these changes:

pragma solidity ^0.6.0;


contract MySmartContract {

    // Define a mapping to store user account addresses and their corresponding ETH balances.

    display(address => uint256) public user balances;


    function donateETH(recipient address, uint256 amount) public payment {

        require(amount > 0, "Invalid amount");

        

        // Store the donation amount in the contract storage.

        userBalances[recipient] = userBalances[recipient].add(amount);

        

        // Send the donated ETH to the recipient address using theeth_sendTransactionfunction.

        transferETH(recipient);

    }

    

    function transferETH(address recipient) public {

        require(userBalances[msg.sender] >= 1 ether, "Insufficient balance");

        

        // Create a transaction object using the Truffleeth_sendTransactionfunction.

        Transaction memory transaction = Transaction(

            message sender,

            address(this),

            Wei(1),

            Wei("0x"),

            0

        );

        

        // Sign the transaction with our private key, and then broadcast it to the network.

        require(tx.signatures[0].from != "", "No signatures");

        required(tx.hash, true);

        tx.send();

    }

}

To use this updated contract in your ReactJS application, you need to install the truffle’ library and configure the Truffle provider. Here’s an example of how to create a new project using Truffle:

npm init truffle -y

npx truffle initialization

Create a new file named my_contract.sol, copy the above Solidity code into it, and then create a new directory structure:

my_contract/

  my_contract.sol

  public/

    Пользователь.sol

  contracts/

    user/

      __heat__.js

Then, in your ReactJS application, you can use the TruffleProvider component from @truffle/core to connect to your Truffle provider and interact with your smart contract:

“`jsx

import React, {useEffect} from ‘react’;

import { Supplier } from ‘truffle-provider’;

import Web3 from ‘web3’;

constant Application = () => {

const web3 = new Web3(window.ethereum);

useEffect(() => {

if (window.etherium) {

web3.currentProvider.connect().then((account) => {

// Use account address to transfer ETH to user accounts.

web3.currentProvider.eth.sendTransaction({

from: ‘0x’, // Your contract address

to: ‘0x’, // User’s wallet address

value: 1 ether, // Transfer amount

gasPrice: web3.utils.toWei(’20’, ‘gwei’) // Gas price

});

}).catch((error) => {

console.error(error);

});

}

}, []);

return (

<Provider provider={web3.

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