如何向以太币令牌所有者发送以太币？

Question

I want to send ether to token owner.

ownerOf returns address, so I set payable address inside of sendEther function.

However, error says 'Type address is not implicitly convertible to expected type address payable'.

Is there any way to set payable address inside function? Could you give me any advise?

  function sendEther(uint256 _tokenId) public payable {
    address payable _tokenOwner = ownerOf(_tokenId);
    _tokenOwner.transfer(msg.value);
  }

ERC721.sol
    function ownerOf(uint256 tokenId) public view returns (address) {
        address owner = _tokenOwner[tokenId];
        return owner;
    }

Answer 1

您不能直接从address为address payable ，但是可以通过uint160分两步进行uint160 ：

address payable _tokenOwner = address(uint160(ownerOf(_tokenId)));