Qt中字符串转换十六进制学习笔记

main.cpp 主函数

#include "StringToHex.h"  
   QString str = "ABBCCDD120190E";  
   QByteArray temp;  
   StringToHex(str, temp);  
   qDebug()<<temp.toHex();  
   qDebug()<<temp;  

StringToHex.h头文件

void StringToHex(QString str, QByteArray &senddata)
{
    int hexdata,lowhexdata;
    int hexdatalen = 0;
    int len = str.length();
    senddata.resize(len/2);
    char lstr,hstr;
    for(int i=0; i<len; )
    {
        //char lstr,
        hstr=str[i].toLatin1();//获取一个字节
        if(hstr == " ")//如果第一个是空的，就直接放弃了，结束本次循环跳入下次循环
        {
            i++;
            continue;
        }
        i++;
        if(i >= len)
            break;
        lstr = str[i].toLatin1();//低以为，先装高，后装低
        hexdata = ConvertHexChar(hstr);
        lowhexdata = ConvertHexChar(lstr);
        if((hexdata == 16) || (lowhexdata == 16))
            break;
        else
            hexdata = hexdata*16+lowhexdata;
        i++;
        senddata[hexdatalen] = (char)hexdata;
        hexdatalen++;
    }
    senddata.resize(hexdatalen);//senddata为我所要
}