Conversion of time stamps

To set the time display format:

nsstring* timestr = @ "2011-01-26 17:40:50";

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

[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

For example, you publish information in the country, the user in another time zone abroad, you want to let users see the correct release time to pay attention to time zone settings, time conversion.

For example, if you posted a time of 2010-01-26 17:40:50, how much time should the user see in the UK and Ireland?

They have a 7-hour time difference with us, so they're not there yet. That's what's going to happen in the future.

nstimezone* TimeZone = [Nstimezone timezonewithname:@ "Asia/shanghai"];

[Formatter Settimezone:timezone];

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

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

NSString *nowtimestr = [Formatter stringfromdate:datenow];//----------convert NSDate to formatter by NSString format

Time-to-timestamp method:

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

NSLog (@ "timesp:%@", TIMESP); Value of time stamp

The method of time stamp turn time

NSDate *CONFROMTIMESP = [NSDate datewithtimeintervalsince1970:1296035591];

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

NSString *confromtimespstr = [Formatter stringfromdate:confromtimesp];

NSLog (@ "confromtimespstr =%@", confromtimespstr);

Time-Stamping Method:

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

[Formatter Setdatestyle:nsdateformattermediumstyle];

[Formatter Settimestyle:nsdateformattershortstyle];

[Formatter setdateformat:@ "YYYYMMDDHHMMSS"];

NSDate *date = [Formatter datefromstring:@ "1283376197"];

NSLog (@ "date1:%@", date);

[Formatter release];

Conversion of time stamps