iphone – NSDate,NSCalendar和NSDateComponents计时

概述NSDate *today = [NSDate date];NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];[calendar setTimeZone:[NSTimeZone timeZoneWithName:@"GMT+2"]];NSDateCompone

NSDate *today = [NSDate date];NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIDentifIEr:NSGregorianCalendar];[calendar setTimeZone:[NSTimeZone timeZoneWithname:@"GMT+2"]];NSDateComponents *dateComponents = [calendar components:(NSDayCalendarUnit | NSWeekdayCalendarUnit) fromDate:today];    NSInteger day = [dateComponents day];NSInteger month = [dateComponents month];NSInteger year = [dateComponents year]; NSLog(@" %i %i %i ",day,month,year);

该代码显示“12 2147483647 2147483647”

我怎样才能获得月份和年份(整数)

如何添加/转发一天？ (如果我们也是这个月的第一个！)

请你注意:-)

解决方法

NSCalendar *calendar= [[NSCalendar alloc] initWithCalendarIDentifIEr:NSGregorianCalendar];NSCalendarUnit unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit |  NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;NSDate *date = [NSDate date];NSDateComponents *dateComponents = [calendar components:unitFlags fromDate:date];NSInteger year = [dateComponents year];NSInteger month = [dateComponents month];NSInteger day = [dateComponents day];NSInteger hour = [dateComponents hour];NSInteger minute = [dateComponents minute];NSInteger second = [dateComponents second];[calendar release];

希望这可以帮助

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