Summary of practical methods of objective-c time operation

Summary of practical methods of objective-c time operation

get the end date according to the month

/** *  getmonthenddate *  get the end date according to the month * *  @param monthbegin month (yyyy-mm-dd HH:mm:ss) * *  @return Nsdate/nil */+ (NSDate *) Getmonthenddate: (NSString *) monthbegin{    if (![ Monthbegin isequaltostring:@ ""]) {        NSDateFormatter *formatter = [[NSDateFormatter alloc] init];        [Formatter Settimezone:[nstimezone timezonewithabbreviation:@ "Utc+8"];        [Formatter setdateformat:@ "Yyyy-mm-dd HH:mm:ss"];        Nsdatecomponents *currentmonth = [[Nsdatecomponents alloc] init];        Currentmonth.month = 1;         NSDate *end = [[Nscalendar Currentcalendar] Datebyaddingcomponents:currentmonth todate:[formatter dateFromString: Monthbegin] options:0];        return end;    } else return nil;}

Get week by date

/** * Getweekfordate * Get week by date * * @param nsstring strdate Date (YYYY-MM-DD) * * @return Nsstring/empty */+ (nsstring*) Getweekfordate: (NSString *) strdate{if (![        Strdate isequaltostring:@ ""]) {//time format NSDateFormatter *formatter = [[NSDateFormatter alloc] init];        Get the corresponding time [formatter setdateformat:@ "YYYY-MM-DD"];        NSDate *cdate = [Formatter datefromstring:strdate];        Get time information [formatter setdateformat:@ "Yyyy-mm-dd eeee HH:mm:ss a"];        NSString *locationstring=[formatter Stringfromdate:cdate];        Nsarray *arrdate = [locationstring componentsseparatedbystring:@ ""];        NSString *strweek = [NSString stringwithformat:@ "%@", [Arrdate Objectatindex:1]];        if ([Strweek isequaltostring:@ "Sunday"]) return @ "Weekend";        else if ([Strweek isequaltostring:@ "Monday"]) return @ "Monday";        else if ([Strweek isequaltostring:@ "Tuesday"]) return @ "Tuesday";      else if ([Strweek isequaltostring:@ "Wednesday"]) return @ "Wednesday";  else if ([Strweek isequaltostring:@ "Thursday"]) return @ "Thursday";        else if ([Strweek isequaltostring:@ "Friday"]) return @ "Friday";        else if ([Strweek isequaltostring:@ "Saturday"]) return @ "Saturday";    else return @ ""; }else return nil;}

Gets the UNIX timestamp based on the current time

    Get timestamp    nsdate *datetime = [NSDate date];    Nstimezone *zone = [Nstimezone timezoneforsecondsfromgmt:8];    Nsinteger interval = [zone secondsfromgmtfordate:datetime];    NSDate *localedate = [datetime  datebyaddingtimeinterval:interval];    NSString *unixtime = [NSString stringwithformat:@ "%.f", Floor ([localedate timeIntervalSince1970]);

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Http://book.2cto.com/201304/21439.html

Http://blog.sina.com.cn/s/blog_4e24d9c501010lu2.html

Summary of practical methods of objective-c time operation