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How can smart contracts receive various token transfers from others?
2022-02-03 20:53:42 【Q & A of Denglian community】
I think I can receive other people's deposits in the smart contract Token. At present, we can pass payble receive ETH, however ERC20 Token I don't know how to receive ？
Take the answer 1：
You need to be in your own contract , Carry out the outside token Into your contract ？
You can use... In the contract ：
function transferFrom(address from, address recipient, uint256 amount) public returns (bool)
But before calling , You need to get from Authorization of address , The authorization method is ：
// The contract authorized to you ：// spender Fill out your contract , use from Address to call this method .function approve(address spender, uint256 value) public returns (bool)
If you can't, you can't use other people's money when your contract token.
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author[Q & A of Denglian community],Please bring the original link to reprint, thank you.
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