QT下int与QByteArray的转换

QByteArray 转int

int bytesToInt(QByteArray bytes) {    
    int addr = bytes[0] & 0x000000FF;    
    addr |= ((bytes[1] << 8) & 0x0000FF00);    
    addr |= ((bytes[2] << 16) & 0x00FF0000);    
    addr |= ((bytes[3] << 24) & 0xFF000000);    
    return addr;    
}    

 

int转QByteArray

QByteArray  intToByte(int number)    
{    
    QByteArray abyte0;    
    abyte0.resize(4);    
    abyte0[0] = (uchar)  (0x000000ff & number);    
    abyte0[1] = (uchar) ((0x0000ff00 & number) >> 8);    
    abyte0[2] = (uchar) ((0x00ff0000 & number) >> 16);    
    abyte0[3] = (uchar) ((0xff000000 & number) >> 24);    
    return abyte0;    
}