IOS timestamp string NSdate conversion demo

IOS timestamp string NSdate conversion demo

1. In projects, we often need to convert the time format. The following is my encapsulated NSDate + TimeCategory, hoping to help you.

 

 

# Import
 
  
@ Interface NSDate (TimeCategory)/*** convert string to NSDate ** @ param theTime string time * @ param format Conversion format such as yyyy-MM-dd HH: mm: ss, that is, 2015-07-15 15:00:00 ** @ return <# return value description #> */+ (NSDate *) dateFromString :( NSString *) timeStr format :( NSString *) format; /*** NSDate to timestamp ** @ param date string time ** @ return returns the timestamp */+ (NSInteger) cTimestampFromDate :( NSDate *) date; /*** string to timestamp *** @ param theTime string time * @ param format Conversion format such as yyyy-MM-dd HH: mm: ss, that is, 15:00:00 ** @ return returns the timestamp string */+ (NSInteger) cTimestampFromString :( NSString *) timeStr format :( NSString *) format; /*** convert the timeStamp to the string *** @ param timeStamp * @ param format Conversion format, for example, yyyy-MM-dd HH: mm: ss, that is, 15:00:00 ** @ return returns the string format time */+ (NSString *) dateStrFromCstampTime :( NSInteger) timeStamp withDateFormat :( NSString *) format; /*** convert NSDate to string *** @ param date NSDate time * @ param format Conversion format, for example, yyyy-MM-dd HH: mm: ss, that is, 15:00:00 ** @ return returns the string format time */+ (NSString *) datestrFromDate :( NSDate *) date withDateFormat :( NSString *) format; @ end
 

#import NSDate+TimeCategory.hstatic 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 *dateFormatter = [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* dateFormat = [NSDate defaultFormatter];    [dateFormat setDateFormat:format];    return [dateFormat stringFromDate:date];}

 

2 call

# 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 = @ 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 convert string: % @-> % @, date, timeStr );}

The following results are displayed:

 

 

15:02:07. 662 TimeDemo [2780: 89582]String ConversionNSDate:15:00:00-> 07:00:00 + 0000

15:02:14. 653 TimeDemo [2780: 89582] NSDateTimestamp:07:02:14 + 0000-> 1436770934

15:02:20. 077 TimeDemo [2780: 89582]String to timestamp:15:00:00-> 1436943600

15:02:22. 957 TimeDemo [2780: 89582]Timestamp to string:1436943600-> 15:00:00

15:02:25. 901 TimeDemo [2780: 89582] NSDateConversion string:07:02:25 + 0000-> 15:02:25