Hello i wanna know what i need to do, i’m searching for a long time how to do the next import './TokenERC20'; // contract A contract Testing { // contract B function buyItem ( address _to , uint _itemPrice ) public { // Require Metamask alert saying "Token + gas" // Use a tokenTransf…

Hi @kypanz , With ERC20, if we transfer an amount of tokens to a contracts address, the contract has no way of knowing that this occurred. Instead we first need to approve an allowance for the recipient contract, then in a second transaction, a function we call in the contract can call transferFrom.…

How to use a token transfer function into another function ? [ ERC20 ]

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abcoathup Split this topic February 18, 2020, 8:53am 8

A post was split to a new topic: Deploy ERC20 contract

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How to use a token transfer function into another function ? [ ERC20 ]

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