Metamask: How to view balance of ERC1155 in Metamask?

Troubleshooting the Balance of ERC1155 Tokens in MetaMask

As a developer, it’s frustrating when issues arise with deploying and managing token contracts. In this article, we’ll delve into the problem you’re facing and provide step-by-step solutions to resolve the issue of displaying the balance of an ERC1155 token on Metamask.

The Issue:

When deploying an ERC1155 token using OpenZeppelin’s OpenZeppelinERC1155 contract, the balance is not displayed correctly in the MetaMask console. The error message might read:

Error: cannot determine balance

or

Error: cannot display balance

Solutions:

To resolve this issue, you’ll need to adjust your code and update it to use the correct methods for displaying token balances.

• Update the balanceOf method: The balanceOf function is used to retrieve the balance of a specific account. To fix the issue, you should call balanceOf(_account, _asset), where _account and _asset are the addresses of the account and asset respectively.

// SPDX-License-Identifier: MIT

import * as ERC1155 from '@openzeppelin/erc-1155';

import { Contract } from 'truffle-contract';


const token = new ERC1155('0x...', {

  totalSupply: 100,

});


contract('ERC1155Token') {

  async function deploy() {

    const _account = web3.eth accounts[0];

    await token.deploy(_account);

  }


  async function getBalance(_account) {

    const balance = await token.balanceOf(_account, '0x...');

    return balance;

  }

}

• Update the balance event:

  To display the balance of a specific asset, you should emit an event with the correct name and data.

// SPDX-License-Identifier: MIT

import * as ERC1155 from '@openzeppelin/erc-1155';

import { Contract } from 'truffle-contract';


const token = new ERC1155('0x...', {

  totalSupply: 100,

});


contract('ERC1155Token') {

  async function deploy() {

    const _account = web3.eth accounts[0];

    await token.deploy(_account);

  }


  async function getBalance(_account) {

    const balance = await token.balanceOf(_account, '0x...');

    return balance;

  }

}

Final Step:

To display the balance of a specific asset in MetaMask, you should add an event to your contract and update it accordingly.

// SPDX-License-Identifier: MIT

import * as ERC1155 from '@openzeppelin/erc-1155';

import { Contract } from 'truffle-contract';


const token = new ERC1155('0x...', {

  totalSupply: 100,

});


contract('ERC1155Token') {

  async function deploy() {

    const _account = web3.eth accounts[0];

    await token.deploy(_account);

  }


  event BalanceOf(string _asset, address _account);


  async function getBalance(_account) {

    const balance = await token.balanceOf(_account, '0x...');

    emit Event(_balance);

    return balance;

  }

}

By following these steps and updating your code accordingly, you should be able to display the balance of an ERC1155 token in MetaMask.

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