iOS gets the current time and converts it to a timestamp

1. Get Current time
+ (NSString *) getcurrentdate
{
Get current time
NSDate *now = [NSDate Date];
Kelog (@ "Now date are:%@", now);

Nscalendar *calendar = [Nscalendar Currentcalendar];
Nsuinteger unitflags = Nsyearcalendarunit | Nsmonthcalendarunit | Nsdaycalendarunit | Nshourcalendarunit | Nsminutecalendarunit | Nssecondcalendarunit;
nsdatecomponents *datecomponent = [Calendar components:unitflags Fromdate:now];

Nsinteger year = [datecomponent year];
Nsinteger month = [datecomponent month];
Nsinteger day = [Datecomponent day];
Nsinteger hour = [Datecomponent hour];
Nsinteger minute = [datecomponent minute];
Nsinteger second = [datecomponent second];
NSString * currentdate = [NSString stringwithformat:@ "%ld-%.2ld-%.2ld%.2ld:%.2ld:%.2ld", Year,month,day,hour,minute, Second];

return currentdate;

}

2.NSDate converted to time stamp

NSDate *datenow = [NSDate date];//now time, you can output to see what format

NSString *timesp = [nsstring stringwithformat:@ '%d ', (long) [Datenow timeIntervalSince1970]];

NSLog (@ "timesp:%@", TIMESP); A method of time stamp value timestamp turning time

NSString Turn NSDate
+ (NSDate *) datewithstring: (NSString *) datastring
{
NSDateFormatter * format = [[NSDateFormatter alloc] init];

[Format setdateformat:@ "Yyyy-mm-dd HH:mm:ss"];

NSDate * date = [format datefromstring:[self getcurrentdate]];

return date;
}

NSDate Turn NSString
+ (NSString *) Stringwithdate: (NSDate *) date{

NSDateFormatter * Dateformatter = [[NSDateFormatter alloc] init];

[Dateformatter setdateformat:@ "Yyyy-mm-dd HH:mm:ss"];

Nsstring*strdate = [dateformatter stringfromdate:[nsdate Date]];

NSLog (@ "%@", strdate);

[Dateformatter release];

return strdate;
}