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solidity call使用

<address>.call(bytes memory payload) returns (bool, bytes memory)

call 仅发送ETH，不传入data

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.26;contract SendEther {// 构造函数，payable使得部署的时候可以转eth进去constructor() payable {}function callEther(address payable recipient, uint256 amount)publicreturns (bool){(bool success, ) = recipient.call{value: amount}("");require(success, "Transfer failed.");return success;}
}

1、部署合约时附带 value

2、调用合约，给接收地址recipient转账

call 传入data,附带发送ETH

在合约中调用其他的合约的方法

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;contract Callee {uint256 value;function getValue() public view returns (uint256) {return value;}function setValue(uint256 value_) public payable {require(msg.value > 0, "msg.value must > 0");value = value_;}// 获取合约地址的eth余额function getBalance() public view returns (uint256) {return address(this).balance;}}contract Caller006 {// 构造函数，payable使得部署的时候可以转eth进去constructor() payable {}function callSetValue(address callee, uint256 value)publicreturns (bool){Callee meta = Callee(callee);// 对函数签名和参数进行编码bytes memory methodop = abi.encodeWithSignature("setValue(uint256)",value);(bool flg, ) = address(meta).call{value: 1 ether}(methodop);if (!flg) {revert("call function failed");}return flg;}// 获取合约地址的eth余额function getBalance() public view returns (uint256) {return address(this).balance;}}

staticcall调用其他合约的方法

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;contract Callee {function getData() public pure returns (uint256) {return 42;}
}contract Caller {function callGetData(address callee) public view returns (uint256 data) {// call by staticcall// 对函数签名和参数进行编码bytes memory methodop = abi.encodeWithSignature("getData()");(bool flg, bytes memory result) = callee.staticcall(methodop);if(!flg){revert("staticcall function failed");}data = bytesToUint(result);return data;}function bytesToUint(bytes memory b) public pure returns (uint256) {uint256 number;for (uint256 i = 0; i < b.length; i++) {number = number + uint8(b[i]) * (2**(8 * (b.length - (i + 1))));}return number;}
}