5 ERC721 tokenId类型不同
假设：721合约中A合约的token id类型是数字类型 1，2，3...，B合约中的tokenId是a,b,c...这样，现在我要写一个转账方法同时支持两种不同类型的tokenId进行转账，该怎样实现？核心问题在于操作转账时需要tokenId，而我不确定tokenId的类型，这个问题怎么处理？
最佳答案 2022-07-08 11:31
function balanceOf(address _owner) external view returns (uint256);
function ownerOf(uint256 _tokenId) external view returns (address);
function safeTransferFrom(address _from, address _to, uint256 _tokenId, bytes data) external payable;
function safeTransferFrom(address _from, address _to, uint256 _tokenId) external payable;
function transferFrom(address _from, address _to, uint256 _tokenId) external payable;
function approve(address _approved, uint256 _tokenId) external payable;
function setApprovalForAll(address _operator, bool _approved) external;
function getApproved(uint256 _tokenId) external view returns (address);
function isApprovedForAll(address _owner, address _operator) external view returns (bool);erc721的标准中，tokenId 都是uint256的格式,所以a这样的估计是toHex()，变成十六进制了
