transfer function

Future<bool> transfer(BigInt amount, String fromAddress, String toAddress, String tokenContractAddress, String tokenContractName, Credentials credentials, { dynamic gasLimit = GAS_LIMIT_HIGH, dynamic gasPrice = GAS_MULTIPLIER, })

Sends an transfer transaction to an ERC 20 contract for a certain amount of tokens

@param {BigInt} amount - Amount of tokens to be approved by the ERC 20 contract @param {String} accountAddress - The Ethereum address of the transaction sender @param {String} tokenContractAddress - The token smart contract address @param {String} tokenContractName - The token smart contract name @param {String} providerUrl - Network url (i.e, http://localhost:8545). Optional @param {Object} signerData - Signer data used to build a Signer to send the transaction

@returns {Promise} transaction

Implementation

Future<bool> transfer(
    BigInt amount,
    String fromAddress,
    String toAddress,
    String tokenContractAddress,
    String tokenContractName,
    Credentials credentials,
    {gasLimit = GAS_LIMIT_HIGH,
    gasPrice = GAS_MULTIPLIER}
/*{TransferEvent onTransfer,
    Function onError}*/
    ) async {
  EthereumAddress from = EthereumAddress.fromHex(fromAddress);
  EthereumAddress to = EthereumAddress.fromHex(toAddress);

  final contract = await ContractParser.fromAssets(
      'ERC20ABI.json', tokenContractAddress.toString(), tokenContractName);

  /*StreamSubscription event;
  // Workaround once sendTransacton doesn't return a Promise containing confirmation / receipt
  if (onTransfer != null) {
    event = listenTransfer(
      (from, to, value) async {
        onTransfer(from, to, value);
        await event.cancel();
      },
      contract,
      take: 1,
    );
  }*/

  try {
    Transaction transaction = Transaction.callContract(
      contract: contract,
      function: _transfer(contract),
      parameters: [to, amount],
      from: from,
    );
    String txHash = await HermezSDK.currentWeb3Client!.sendTransaction(
        credentials, transaction,
        chainId: getCurrentEnvironment()!.chainId);
    print(txHash);
    return true;
  } catch (e) {
    print(e.toString());
    /*if (onError != null) {
      onError(ex);
    }
    return null;*/
    return false;
  }
}