話(huà)不多說(shuō)，直接上碼。

NSString*string = [[NSStringalloc]initWithFormat:@"%@",_StartLabel.text];

? ? NSArray*timeComs = [stringcomponentsSeparatedByString:@":"];

? ? Bytehour_byte = (Byte)[timeComs.firstObjectintValue];

? ? Bytemin_byte = (Byte)[timeComs.lastObjectintValue];

? ? NSDate*currentDate = [NSDatedate];

? ? NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

? ? [dateFormattersetDateFormat:@"HH:mm"];

? ? NSString*dateString = [dateFormatterstringFromDate:currentDate];

? ? NSArray* currenttime = [dateStringcomponentsSeparatedByString:@":"];

? ? Bytecurrent_hour = (Byte)[currenttime.firstObjectintValue];

? ? Bytecurrent_min? = (Byte)[currenttime.lastObjectintValue];

? ? ByteB ={01+02+01+hour_byte+min_byte+01+current_hour+current_min};

? ? Bytesum = ~B+1;

? ? NSLog(@"? ? ? ? %d",B);

? ? NSLog(@"? ? ? ? %hhu",sum);

? ? Bytetable[] = {0xFD,0xFA,0x01,0x02,0x01,hour_byte,min_byte,0X01,0x00,0x00, current_hour,current_min,0x00, sum,0xFD,0xFA};

? ? for(intj =0; j

? ? ? ? NSLog(@"%02x", table[j]);

? ? }