iOS timestamp string nsdate conversion demo

1 in the project we often have to do time format conversion, the following is my encapsulated nsdate+timecategory, hope to help everyone.

#import <Foundation/Foundation.h> @interface nsdate (timecategory)/** * String goto nsdate * * @param thetime string time * @par AM format conversion format such as Yyyy-mm-dd HH:mm:ss, i.e. 2015-07-15 15:00:00 * * @return < #return value description#> */+ (nsdate *) da   Tefromstring: (NSString *) timestr format: (NSString *) format;/** * NSDate turn timestamp * * @param date string Time * *   @return return timestamp */+ (Nsinteger) ctimestampfromdate: (NSDate *) date;/** * string to Timestamp * * @param thetime string time * @param format Conversion formats such as Yyyy-mm-dd HH:MM:SS, 2015-07-15 15:00:00 * * @return return timestamp string */+ (Nsinteger) ctimestampfromstring: (NSString *) Tim ESTR format: (NSString *) format;/** * Timestamp to String * * @param timeStamp timestamp * @param format conversion format such as Yyyy-mm-dd HH:mm:ss, 2015-07-15 15:00:00 * * @return return string format time */+ (NSString *) Datestrfromcstamptime: (Nsinteger) TimeStamp Withdateformat: (NSString *) format;/** * NSDate Turn String * * @param date nsdate time * @param fo Rmat conversion formats such as YYYY-MM-DD HH:mm:ss, i.e.2015-07-15 15:00:00 * * @return return string format time */+ (NSString *) Datestrfromdate: (NSDate *) Date Withdateformat: (NS String *) format; @end

#import "Nsdate+timecategory.h" static NSDateFormatter *dateformatter; @implementation nsdate (timecategory) + (    NSDateFormatter *) defaultformatter{static dispatch_once_t Oncetoken;    Dispatch_once (&oncetoken, ^{dateformatter = [[NSDateFormatter alloc]init];    }); return dateformatter;} + (NSDate *) datefromstring: (NSString *) timestr format: (NSString *) format{nsdateformatter *dateforma    tter = [NSDate defaultformatter];    [Dateformatter Setdateformat:format];    NSDate *date = [Dateformatter datefromstring:timestr]; return date;} + (Nsinteger) ctimestampfromdate: (NSDate *) date{return (long) [Date timeIntervalSince1970];}  + (Nsinteger) ctimestampfromstring: (NSString *) timestr format: (NSString *) format{nsdate *date =    [NSDate datefromstring:timestr Format:format]; return [NSDate ctimestampfromdate:date];} + (NSString *) Datestrfromcstamptime: (Nsinteger) TimeStamp Withdateformat: (NSString *) format{nsdate*date = [NSDate datewithtimeintervalsince1970:timestamp]; return [NSDate datestrfromdate:date Withdateformat:format];} + (NSString *) Datestrfromdate: (NSDate *) Date Withdateformat: (NSString *) format{nsdateformatter* Dateform    at = [NSDate defaultformatter];    [DateFormat Setdateformat:format]; return [DateFormat stringfromdate:date];}

2 calls

#import "Nsdate+timecategory.h"

-(Ibaction) Strtodate: (ID) Sender {    NSString *timestr = @ "2015-07-15 15:00:00";    NSDate *date = [nsdate datefromstring:timestr format:@ "Yyyy-mm-dd HH:mm:ss"];    NSLog (@ "string to nsdate:%@,%@", timestr,date);}

-(Ibaction) Datetostamp: (ID) Sender {        NSDate *date = [NSDate date];    Nsinteger stamp = [NSDate ctimestampfromdate:date];    NSLog (@ "nsdate to timestamp:%@->%ld", Date,stamp);}

-(Ibaction) Strtostamp: (ID) Sender {    NSString *timestr = @ "2015-07-15 15:00:00";    Nsinteger stamp = [nsdate ctimestampfromstring:timestr format:@ "Yyyy-mm-dd HH:mm:ss"];     NSLog (@ "string to timestamp:%@,%ld", Timestr,stamp);}

-(Ibaction) STAMPTOSTR: (ID) Sender {    Nsinteger stamp = 1436943600;    NSString *timestr = [nsdate datestrfromcstamptime:stamp withdateformat:@ "Yyyy-mm-dd HH:mm:ss"];     NSLog (@ "timestamp to string:%ld->%@", stamp,timestr);}

-(Ibaction) DATETOSTR: (ID) Sender {    NSDate *date = [NSDate date];    NSString *timestr = [nsdate datestrfromdate:date withdateformat:@ "Yyyy-mm-dd HH:mm:ss"];   NSLog (@ "NSDate to string:%@->%@", date,timestr);}

Get the following results separately

2015-07-13 15:02:07.662 timedemo[2780:89582] String goto NSDate : 2015-07-15 15:00:00, 2015-07-15 07:00:00 +0000

2015-07-13 15:02:14.653 timedemo[2780:89582] NSDate Turn time stamp: 2015-07-13 07:02:14 +0000->1436770934

2015-07-13 15:02:20.077 timedemo[2780:89582] string turn timestamp: 2015-07-15 15:00:00-1436943600

2015-07-13 15:02:22.957 timedemo[2780:89582] Timestamp to string: 1436943600->2015-07-15 15:00:00

2015-07-13 15:02:25.901 timedemo[2780:89582] NSDate go to string: 2015-07-13 07:02:25 +0000->2015-07-13 15:02:25

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iOS timestamp string nsdate conversion demo