IOS------Get current time and current timestamp

Gets the current time

+ (nsstring*) getcurrenttimes{

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

----------set the format you want, the difference between HH and HH: 12-hour, 24-hour system, respectively.

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

Now time, you can output to see what the format is

NSDate *datenow = [NSDate Date];

----------convert NSDate to NSString by formatter format

NSString *currenttimestring = [Formatter stringfromdate:datenow];

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

return currenttimestring;

}

There are two ways to get the current timestamp (in seconds)

+ (NSString *) getnowtimetimestamp{

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/shanghai"];

[Formatter Settimezone:timezone];

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

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

return TIMESP;

}

+ (NSString *) getnowtimetimestamp2{

nsdate* dat = [nsdate datewithtimeintervalsincenow:0];

Nstimeinterval A=[dat timeIntervalSince1970];

nsstring*timestring = [NSString stringwithformat:@ "%0.f", a];//to character type

;

return timestring;

}

Gets the current timestamp (in milliseconds)

+ (NSString *) getnowtimetimestamp3{

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

[Formatter Setdatestyle:nsdateformattermediumstyle];

[Formatter Settimestyle:nsdateformattershortstyle];

[Formatter setdateformat:@ "Yyyy-mm-dd HH:mm:ss SSS"]; ----------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/shanghai"];

[Formatter Settimezone:timezone];

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

NSString *timesp = [NSString stringwithformat:@ "%ld", (long) [Datenow timeintervalsince1970]*1000];

return TIMESP;

}

IOS------Get current time and current timestamp