Contract-Development
乙太坊智能合約部署的代幣未顯示
pragma solidity ^0.4.24; contract owned { address public owner; function owned() public { owner = msg.sender; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address newOwner) onlyOwner public { owner = newOwner; } } interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) external; } contract ERC20Name { // Public variables of the token string public name; string public symbol; uint8 public decimals = 2; // 18 decimals is the strongly suggested default, avoid changing it uint256 public totalSupply; // This creates an array with all balances mapping (address => uint256) public balanceOf; mapping (address => mapping (address => uint256)) public allowance; // This generates a public event on the blockchain that will notify clients event Transfer(address indexed from, address indexed to, uint256 value); // This generates a public event on the blockchain that will notify clients event Approval(address indexed _owner, address indexed _spender, uint256 _value); // This notifies clients about the amount burnt event Burn(address indexed from, uint256 value); /** * Constrctor function * * Initializes contract with initial supply tokens to the creator of the contract */ function ERC20Name( uint256 initialSupply, string tokenName, string tokenSymbol ) public { totalSupply = initialSupply * 10 ** uint256(decimals); // Update total supply with the decimal amount balanceOf[msg.sender] = totalSupply; // Give the creator all initial tokens name = tokenName; // Set the name for display purposes symbol = tokenSymbol; // Set the symbol for display purposes } /** * Internal transfer, only can be called by this contract */ function _transfer(address _from, address _to, uint _value) internal { // Prevent transfer to 0x0 address. Use burn() instead require(_to != 0x0); // Check if the sender has enough require(balanceOf[_from] >= _value); // Check for overflows require(balanceOf[_to] + _value > balanceOf[_to]); // Save this for an assertion in the future uint previousBalances = balanceOf[_from] + balanceOf[_to]; // Subtract from the sender balanceOf[_from] -= _value; // Add the same to the recipient balanceOf[_to] += _value; emit Transfer(_from, _to, _value); // Asserts are used to use static analysis to find bugs in your code. They should never fail assert(balanceOf[_from] + balanceOf[_to] == previousBalances); } /** * Transfer tokens * * Send `_value` tokens to `_to` from your account * * @param _to The address of the recipient * @param _value the amount to send */ function transfer(address _to, uint256 _value) public returns (bool success) { _transfer(msg.sender, _to, _value); return true; } /** * Transfer tokens from other address * * Send `_value` tokens to `_to` in behalf of `_from` * * @param _from The address of the sender * @param _to The address of the recipient * @param _value the amount to send */ function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) { require(_value <= allowance[_from][msg.sender]); // Check allowance allowance[_from][msg.sender] -= _value; _transfer(_from, _to, _value); return true; } /** * Set allowance for other address * * Allows `_spender` to spend no more than `_value` tokens in your behalf * * @param _spender The address authorized to spend * @param _value the max amount they can spend */ function approve(address _spender, uint256 _value) public returns (bool success) { allowance[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } /** * Set allowance for other address and notify * * Allows `_spender` to spend no more than `_value` tokens in your behalf, and then ping the contract about it * * @param _spender The address authorized to spend * @param _value the max amount they can spend * @param _extraData some extra information to send to the approved contract */ function approveAndCall(address _spender, uint256 _value, bytes _extraData) public returns (bool success) { tokenRecipient spender = tokenRecipient(_spender); if (approve(_spender, _value)) { spender.receiveApproval(msg.sender, _value, this, _extraData); return true; } } } /******************************************/ /* ADVANCED TOKEN STARTS HERE */ /******************************************/ contract MyAdvancedToken is owned, ERC20Name { uint256 public sellPrice; uint256 public buyPrice; mapping (address => bool) public frozenAccount; /* This generates a public event on the blockchain that will notify clients */ event FrozenFunds(address target, bool frozen); /* Initializes contract with initial supply tokens to the creator of the contract */ function MyAdvancedToken( uint256 initialSupply, string tokenName, string tokenSymbol ) ERC20Name(initialSupply, tokenName, tokenSymbol) public {} /* Internal transfer, only can be called by this contract */ function _transfer(address _from, address _to, uint _value) internal { require (_to != 0x0); // Prevent transfer to 0x0 address. Use burn() instead require (balanceOf[_from] >= _value); // Check if the sender has enough require (balanceOf[_to] + _value >= balanceOf[_to]); // Check for overflows require(!frozenAccount[_from]); // Check if sender is frozen require(!frozenAccount[_to]); // Check if recipient is frozen balanceOf[_from] -= _value; // Subtract from the sender balanceOf[_to] += _value; // Add the same to the recipient emit Transfer(_from, _to, _value); } /// @notice `freeze? Prevent | Allow` `target` from sending & receiving tokens /// @param target Address to be frozen /// @param freeze either to freeze it or not function freezeAccount(address target, bool freeze) onlyOwner public { frozenAccount[target] = freeze; emit FrozenFunds(target, freeze); } /// @notice Allow users to buy tokens for `newBuyPrice` eth and sell tokens for `newSellPrice` eth /// @param newSellPrice Price the users can sell to the contract /// @param newBuyPrice Price users can buy from the contract function setPrices(uint256 newSellPrice, uint256 newBuyPrice) onlyOwner public { sellPrice = newSellPrice; buyPrice = newBuyPrice; } /// @notice Buy tokens from contract by sending ether function buy() payable public { uint amount = msg.value / buyPrice; // calculates the amount _transfer(this, msg.sender, amount); // makes the transfers } /// @notice Sell `amount` tokens to contract /// @param amount amount of tokens to be sold function sell(uint256 amount) public { address myAddress = this; require(myAddress.balance >= amount * sellPrice); // checks if the contract has enough ether to buy _transfer(msg.sender, this, amount); // makes the transfers msg.sender.transfer(amount * sellPrice); // sends ether to the seller. It's important to do this last to avoid recursion attacks } }
在我設置令牌資訊並點擊交易按鈕後，它成功進入區塊鏈（rinkeby）但沒有顯示令牌。謝謝你的幫助
當您說，一旦部署了合約，“沒有令牌顯示”。我假設您想查看令牌資訊。
選項 1 - Etherscan：
因此，在這種情況下，您需要訪問以下 URL：https ://rinkeby.etherscan.io/token/ContractAddress
請將 URL 的最後一個參數替換為您的實際合約地址。您將看到所有令牌資訊。
選項2：混音 在混音中，您可以在右側面板中查看
令牌已創建。您的契約中定義的供應量是可以存在的最大值
您尚未收到代幣，因為沒有創建代幣並將其發送到您的部署錢包的功能。