Conversion of time and time stamps in iOS

Gets the timestamp of the current system time

#pragma mark-Gets the timestamp of the current time

+ (Nsinteger) getnowtimestamp{

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

[Formatter Setdatestyle:nsdateformattermediumstyle];

[Formatter Settimestyle:nsdateformattershortstyle];

[Formatter setdateformat:@ "Yyyy-mm-dd HH:mm:ss"]; ----------set the format you want, the difference between HH and HH: 12-hour, 24-hour system, respectively.

Setting the time zone, which is sometimes important

nstimezone* TimeZone = [Nstimezone timezonewithname:@ "asia/beijing"];

[Formatter Settimezone:timezone];

NSDate *datenow = [NSDate date];//now time

NSLog (@ "Device Current time:%@", [formatter stringfromdate:datenow]);

Time-to-timestamp method:

Nsinteger TIMESP = [[NSNumber numberwithdouble:[datenow timeIntervalSince1970]] integervalue];

NSLog (@ "Device current timestamp:%ld", (long) TIMESP); Value of time stamp

return TIMESP;

}

Convert a time to a timestamp

#pragma mark-Converts a time into a timestamp

+ (Nsinteger) Timeswitchtimestamp: (NSString *) formattime andformatter: (NSString *) format{

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

[Formatter Setdatestyle:nsdateformattermediumstyle];

[Formatter Settimestyle:nsdateformattershortstyle];

[Formatter Setdateformat:format]; (@ "Yyyy-mm-dd hh:mm:ss")----------set the format you want, the difference between HH and HH: 12-hour, 24-hour system, respectively

nstimezone* TimeZone = [Nstimezone timezonewithname:@ "asia/beijing"];

[Formatter Settimezone:timezone];

nsdate* date = [Formatter datefromstring:formattime]; ------------turn the string into NSDate by formatter

Time-to-timestamp method:

Nsinteger TIMESP = [[NSNumber numberwithdouble:[date timeIntervalSince1970]] integervalue];

NSLog (@ "Convert a time to timestamp &&&&&&&timesp:%ld", (long) TIMESP); Value of time stamp

return TIMESP;

}

Convert a timestamp to a time

#pragma mark-Converts a timestamp into time

+ (NSString *) Timestampswitchtime: (Nsinteger) timestamp andformatter: (NSString *) format{

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

[Formatter Setdatestyle:nsdateformattermediumstyle];

[Formatter Settimestyle:nsdateformattershortstyle];

[Formatter Setdateformat:format]; (@ "Yyyy-mm-dd hh:mm:ss")----------set the format you want, the difference between HH and HH: 12-hour, 24-hour system, respectively

Nstimezone *timezone = [Nstimezone timezonewithname:@ "asia/beijing"];

[Formatter Settimezone:timezone];

NSDate *CONFROMTIMESP = [NSDate datewithtimeintervalsince1970:timestamp];

NSLog (@ "1296035591 =%@", CONFROMTIMESP);

NSString *confromtimespstr = [Formatter stringfromdate:confromtimesp];

NSLog (@ "&&&&&&&CONFROMTIMESPSTR =:%@", CONFROMTIMESPSTR);

return confromtimespstr;

}

Conversion of time and time stamps in iOS