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//得到當前的日期
nsdate *date = [nsdate date];
nslog(@"date:%@",date);
//得到(24 * 60 * 60)即24小時之前的日期，datewithtimeintervalsincenow:
nsdate *yesterday = [nsdate datewithtimeintervalsincenow: -(24 * 60 * 60)];
nslog(@"yesterday:%@",yesterday);
nsdateformatter *formatter =[[[nsdateformatter alloc] init] autorelease];
nsdate *date = [nsdate date];
[formatter settimestyle:nsdateformattermediumstyle];
nscalendar *calendar = [[[nscalendar alloc] initwithcalendaridentifier:nsgregoriancalendar] autorelease];
nsdatecomponents *comps = [[[nsdatecomponents alloc] init] autorelease];
nsinteger unitflags = nsyearcalendarunit |
nsmonthcalendarunit |
nsdaycalendarunit |
nsweekdaycalendarunit |
nshourcalendarunit |
nsminutecalendarunit |
nssecondcalendarunit;
//int week=0;
comps = [calendar components:unitflags fromdate:date];
int week = [comps weekday];
int year=[comps year];
int month = [comps month];
int day = [comps day];
//[formatter setdatestyle:nsdateformattermediumstyle];
//this sets the label with the updated time.
int hour = [comps hour];
int min = [comps minute];
int sec = [comps second];
nslog(@"week%d",week);
nslog(@"year%d",year);
nslog(@"month%d",month);
nslog(@"day%d",day);
nslog(@"hour%d",hour);
nslog(@"min%d",min);
nslog(@"sec%d",sec);
//得到毫秒
nsdateformatter *dateformatter = [[nsdateformatter alloc] init];
[dateformatter setdatestyle:nsdateformattermediumstyle];
[dateformatter settimestyle:nsdateformattershortstyle];
//[dateformatter setdateformat:@"hh:mm:ss"]
[dateformatter setdateformat:@"yyyy-mm-dd hh:mm:ss.sss"];
nslog(@"date%@", [dateformatter stringfromdate:[nsdate date]]);
[dateformatter release];
杜思波 2011 湖南
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