QT下int与QByteArray的转换

int转QByteArray

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

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; 
}