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bytes32Tostring 不起作用的，求大佬帮忙看下 | 登链社区 | 技术问答

 3 years ago
source link: https://learnblockchain.cn/question/1911
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bytes32Tostring 不起作用的，求大佬帮忙看下

5 bytes32Tostring 不起作用的，求大佬帮忙看下

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pragma solidity ^0.4.26;

contract Bytes32ToString{
    
    bytes2 name=0x7a68;
    
    function changeIt() returns(string){
        
    //    return string(name);  
    
    }
    
    
    function bytes32Tostring(bytes32 _newname) view returns(string){
        
        bytes memory newname = new bytes(_newname.length);
        
        for(uint i = 0;i<_newname.length;i++){
            
            newname[i] = _newname[i];
            
        }
        
        return string(newname);
        
        
    }
    
    
  
}

我的这个和教程上是一样的，教程 bytes32Tostring 是起作用的，

我的一直在报这个错，不明白这个报错是表达什么意思，求教
image.png

call to Bytes32ToString.bytes32Tostring errored: Error encoding arguments: Error: incorrect data length (argument=null, value="0x7a68", code=INVALID_ARGUMENT, version=abi/5.0.7)


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