Metamask: Help please, React State is not changing, when trying to fetch account balance

Metamask: Help Please – React State is not changing despite fetching account balance

As a Metamask user, you’re likely familiar with the importance of fetching your account balance accurately. However, there may be cases where your state doesn’t update as expected. In this article, we’ll explore why and how to resolve the issue.

The Problem:

When trying to fetch an account balance in React, it’s common for the state object to not reflect the changes made by the component. This can happen due to several reasons:

• Initial state is frozen: When you first render your app, the initial state might be frozen, meaning that any updates are not applied.

• State is being updated elsewhere: The fetchAccountBalance function might be updating another part of your codebase, causing a conflict.

• No async/await implementation: If you’re using an older version of React or ES6 syntax, you might need to use async/await to handle promises.

The Solution:

To resolve this issue, we’ll focus on the following steps:

• Use useState correctly

  

  : Ensure that your component uses useState to manage its state.

• Implement async/await: Update your code to use async/await for fetching account balance data.

• Avoid updating state directly: Instead of updating state immediately, let the fetchAccountBalance function handle the updates.

Code Example:

Here’s a simple example to illustrate these points:

import React, { useState } from 'react';

import { Metamask } from '@metamask-connect';


const Account = () => {

  const [balance, setBalance] = useState(0);


  const handleFetchAccountBalance = async () => {

    try {

      const response = await fetchAccountBalance();

      const balanceData = await response.json();


      // Update the state with the new balance

      setBalance(balanceData.balance);

    } catch (error) {

      console.error(error);

    }

  };


  return (

    

      
Account Balance: {balance}

      Fetch Balance

    

  );

};


export default Account;

In this example:

• We use useState to manage our state (balance) and initialize it with a value of 0.

• The fetchAccountBalance function is an async function that uses await for promises. When called, it fetches the account balance data from Metamask using the response.json() method and updates the setBalance function to reflect the new balance.

• We don’t update the state directly within this component; instead, we use async/await to handle the updates.

Conclusion:

By following these steps and understanding why your React component might not be updating its state correctly, you should be able to resolve the issue with fetching account balances. Remember to always use useState correctly, implement async/await, and avoid updating state directly within your components. If you’re still experiencing issues, feel free to provide more context or code for further assistance!