Count Last Seen Using Date

Count Last Seen Using Date

Write Following Code in ViewController.m :-

- (void)viewDidLoad {

    [super viewDidLoad];

   

    //----------------- Days Count

    

    NSLog(@"Last Seen : %@", [self relativeDateStringForDate:[self StringToFormatedDate:@"2016-12-08 06:29:25"]]) ;

}

-(NSDate *)StringToFormatedDate:(NSString *)dateStr

{

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

    [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];

    NSDate *date = [dateFormatter dateFromString:dateStr];

    return date;

}

- (NSString *)relativeDateStringForDate:(NSDate *)date

{

    

    NSCalendarUnit units = NSDayCalendarUnit | NSWeekOfYearCalendarUnit |

    NSMonthCalendarUnit | NSYearCalendarUnit ;

    NSCalendar *cal = [NSCalendar currentCalendar];

    NSDateComponents *components1 = [cal components:(NSCalendarUnitEra|NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay) fromDate:[NSDate date]];

    NSDate *today = [cal dateFromComponents:components1];

    

    components1 = [cal components:(NSCalendarUnitEra|NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay) fromDate:date];

    NSDate *thatdate = [cal dateFromComponents:components1];

    

    // if `date` is before "now" (i.e. in the past) then the components will be positive

    NSDateComponents *components = [[NSCalendar currentCalendar] components:units

                                                                   fromDate:thatdate

                                                                     toDate:today

                                                                    options:0];

    

    if (components.year > 0) {

        return [NSString stringWithFormat:@"%ld years ago", (long)components.year];

    } else if (components.month > 0) {

        return [NSString stringWithFormat:@"%ld months ago", (long)components.month];

    } else if (components.weekOfYear > 0) {

        return [NSString stringWithFormat:@"%ld weeks ago", (long)components.weekOfYear];

    } else if (components.day > 0) {

        if (components.day > 1) {

            return [NSString stringWithFormat:@"%ld days ago", (long)components.day];

        } else {

            return @"Yesterday";

        }

    } else {

        return @"Today";

    }

}