oc 打印二进制

最近搞tcp需要按位传输,整了个工具方法查询二进制/// length待打印长度-(void)bytearrtostr:(Byte *)data length:(int)length{    char char_1 = '1',char_0 = '0';    char *chars = malloc(length*8+1);    chars[length*8] = '\n';    for(int i=0;i<length;i++)    {        Byte bb = data[i];        for(int j=0;j<8;j++)        {            if(((bb>>j)&0x01) == 1)            {                chars[i*8+j] = char_1;            }else{                chars[i*8+j] = char_0;            }        }        char temp = 0;        temp =  chars[i*8+0];chars[i*8+0] = chars[i*8+7];chars[i*8+7] = temp;        temp =  chars[i*8+1];chars[i*8+1] = chars[i*8+6];chars[i*8+6] = temp;        temp =  chars[i*8+2];chars[i*8+2] = chars[i*8+5];chars[i*8+5] = temp;        temp =  chars[i*8+3];chars[i*8+3] = chars[i*8+4];chars[i*8+4] = temp;    }    NSString *string = [NSString stringWithCString:chars encoding:NSUTF8StringEncoding];    NSLog(@"binnary string = %@",string);}