ios开发获取系统时间-蒲公英云

ios开发获取系统时间

取得当前的年月日，当前的时分秒获得，周几和星期几获得

NSDate*date = [NSDate date];

NSCalendar*calendar = [NSCalendar currentCalendar];

NSDateComponents*comps;

// 年月日获得

comps =[calendar components:(NSYearCalendarUnit | NSMonthCalendarUnit |NSDayCalendarUnit)

                                  fromDate:date\];

NSIntegeryear = [comps year];

NSIntegermonth = [comps month];

NSIntegerday = [comps day];

NSLog(@”year:%d month: %d, day: %d”, year, month, day);

//当前的时分秒获得

comps =[calendar components:(NSHourCalendarUnit | NSMinuteCalendarUnit |NSSecondCalendarUnit)

                                  fromDate:date\];

NSIntegerhour = [comps hour];

NSIntegerminute = [comps minute];

NSIntegersecond = [comps second];

NSLog(@”hour:%d minute: %d second: %d”, hour, minute, second);

// 周几和星期几获得

comps =[calendar components:(NSWeekCalendarUnit | NSWeekdayCalendarUnit |NSWeekdayOrdinalCalendarUnit)

                                  fromDate:date\];

NSInteger week = [comps week]; // 今年的第几周

NSIntegerweekday = [comps weekday]; // 星期几（注意，周日是“1”，周一是“2”。。。。）

NSIntegerweekdayOrdinal = [comps weekdayOrdinal]; // 这个月的第几周

NSLog(@”week:%d weekday: %d weekday ordinal: %d”, week, weekday, weekdayOrdinal);

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

   if(dateSwitch.on)
   \[dateFormattersetDateFormat:@"dd-MMM-yyy,hh:mm:ss"\];
   else
   \[dateFormatter setDateFormat:@"hh:mm:ss"\];
   labelTime.text = \[dateFormatter stringFromDate:\[NSDatedate\]\];
   labelTime.font = \[UIFontsystemFontOfSize:fontSlider.value\];
   \[dateFormatter release\];